├── 171210ship ├── 0123_2.png ├── 0123_dsi_2.png ├── README.md ├── animation.gif └── goship.m ├── DSC07752small.jpg ├── LICENSE ├── README.md ├── dual_rtl_sdr.grc └── dual_rtl_sdr.png /171210ship/0123_2.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jmfriedt/passive_radar/48c7911cb67ad97944e1f2aaf830aa9c79ae039f/171210ship/0123_2.png -------------------------------------------------------------------------------- /171210ship/0123_dsi_2.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jmfriedt/passive_radar/48c7911cb67ad97944e1f2aaf830aa9c79ae039f/171210ship/0123_dsi_2.png -------------------------------------------------------------------------------- /171210ship/README.md: -------------------------------------------------------------------------------- 1 | # Processing software 2 | 3 | The dataset is huge and is stored on a separate web site at 4 | https://www.iqengine.org under GNU Radio SigMF Repo -> Passive Radar (both channels split in 5 | two files during post-processing although initially saved as a single interleaved file). 6 | This processing script for GNU/Octave assumes data have been stored as 8-bit integers. 7 | Direct Signal Interference (DSI) removal benefit is illustrated with the figures below, 8 | without and with DSI removal (red ellipse) allowing for a nearby target (green 9 | circle) to become visible, otherwise hidden in the sidelobes. 10 | 11 | 12 | 13 | 14 | Movie of a 5.8 GB dataset processed without DSI removal (left) and with DSI removal (right) 15 | 16 | 17 | 18 | The movies were created using 19 | 20 | ```bash 21 | for i in `seq -w 0001 0365`; do echo $i; convert +append nodsi/${i}_2.png dsi/${i}_dsi_2.png ${i}.png;done 22 | ``` 23 | followed by 24 | ```bash 25 | convert -delay 4 -loop 0 *dsi*.png animation_dsi.gif 26 | ``` 27 | -------------------------------------------------------------------------------- /171210ship/animation.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jmfriedt/passive_radar/48c7911cb67ad97944e1f2aaf830aa9c79ae039f/171210ship/animation.gif -------------------------------------------------------------------------------- /171210ship/goship.m: -------------------------------------------------------------------------------- 1 | pkg load signal 2 | save_picts=1; % set to 1 to save output images 3 | % f=fopen('ship4char_mountain.bin','rb'); 4 | f1=fopen('171210ship_ch1.sigmf-data','rb'); 5 | f2=fopen('171210ship_ch2.sigmf-data','rb'); 6 | p=1; 7 | fs=2.048e6; % sampling frequency 8 | N=fs; % 1 second worth of data 9 | tim=[0:1/fs:(N/2-1)/fs]'; % discretized time 10 | freq=[-200:4:200]; % Doppler shift 11 | dsi_suppression=0 % option to activate Direct Signal Interference removal 12 | 13 | t=fread(f1,[2, N/2],'char'); 14 | v=t(1,:)+t(2,:)*i; 15 | [r,c]=size(v); 16 | ref=reshape(v,c,r); 17 | 18 | t=fread(f2,[2, N/2],'char'); 19 | v=t(1,:)+t(2,:)*i; 20 | [r,c]=size(v); 21 | mes=reshape(v,c,r); 22 | 23 | xc=abs(xcorr(ref,mes)); 24 | [val,pos]=max(xc); 25 | pos=length(ref)-pos 26 | 27 | if (pos>0) % which channel is reference and which is measurement? 28 | mes=mes(pos:end); 29 | ref=ref(1:end-pos); 30 | xc=abs(xcorr(ref,mes)); 31 | [val,posn]=max(xc); 32 | length(ref)-posn 33 | tim=tim(1:end-pos+1); 34 | else 35 | ref=ref(-pos:end); 36 | mes=mes(1:end+pos); 37 | xc=abs(xcorr(ref,mes)); 38 | [val,posn]=max(xc); 39 | length(ref)-posn 40 | tim=tim(1:end+pos+1); 41 | end 42 | 43 | for k=1:1008 44 | t=fread(f1,[2, N/2],'char'); 45 | t=fread(f2,[2, N/2],'char'); 46 | p=p+1 47 | end 48 | 49 | for k=1:N:19227738112/4 50 | p 51 | t=fread(f1,[2, N/2],'char'); 52 | v=t(1,:)+t(2,:)*i; 53 | [r,c]=size(v); 54 | ref=reshape(v,c,r); 55 | 56 | t=fread(f2,[2, N/2],'char'); 57 | v=t(1,:)+t(2,:)*i; 58 | [r,c]=size(v); 59 | mes=reshape(v,c,r); 60 | 61 | if (pos>0) % align 62 | mes=mes(pos:end); 63 | ref=ref(1:end-pos+1); 64 | else 65 | ref=ref(-pos:end); 66 | mes=mes(1:end+pos+1); 67 | end 68 | m=1; 69 | 70 | if (dsi_suppression==1) 71 | nt=length(ref); 72 | %% DSI suppression -- algorithm implementation provided by W. Feng (X'ian, China) 73 | % Range shift 74 | Index1=-9;Index2=+9; % negative range if doubts about ref v.s meas 75 | num_range_shift=(Index2-Index1+1); 76 | X1=zeros(nt,num_range_shift); 77 | for kk=Index1:Index2 78 | te=kk+abs(Index1)+1; 79 | if kk<=0 80 | X1(:,te)=[ref(0-kk+1:end);zeros(0-kk,1)]; 81 | else 82 | X1(:,te)=[zeros(kk-1,1);ref(1:end-kk+1)]; 83 | end 84 | end 85 | % Least Square optimization 86 | mes=mes-X1*(pinv(X1)*mes); 87 | clear X1; 88 | end 89 | 90 | m=1; 91 | for fd=freq 92 | mesdop=mes.*exp(j*2*pi*fd*tim); 93 | x=abs(xcorr(ref,mesdop,2048)); 94 | rangedop(:,m)=x(2048-20:2048+150-20); 95 | m=m+1; 96 | end 97 | if (dsi_suppression==1) 98 | imagesc(freq,([-20:+150+20])*3e8/fs/2/1000,fliplr(flipud(rangedop)),[0 0.05*max(max(rangedop))]); 99 | else 100 | imagesc(freq,([-20:+150+20])*3e8/fs/2/1000,fliplr(flipud(rangedop)),[0 0.01*max(max(rangedop))]); 101 | end 102 | xlabel('Doppler shift (Hz)') 103 | ylabel('range (km)') 104 | temps=p/2; 105 | colorbar 106 | title([num2str(temps),' s']) 107 | if (save_picts==1) 108 | name=[num2str(p,'%04d'),'_2.png']; 109 | eval(['print -dpng ',name]); 110 | name=[num2str(p,'%04d'),'_2.mat']; 111 | eval(['save ',name,' rangedop']); 112 | end 113 | p=p+1; 114 | end 115 | % r=linspace(0,67/2.048*300/2,67) 116 | % xx=x(2048+160:2048+226,:); 117 | r=linspace(0,157/2.048*300/2,157) 118 | xx=x(2048+450:2048+606,:); 119 | -------------------------------------------------------------------------------- /DSC07752small.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jmfriedt/passive_radar/48c7911cb67ad97944e1f2aaf830aa9c79ae039f/DSC07752small.jpg -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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"Knowingly relying" means you have 508 | actual knowledge that, but for the patent license, your conveying the 509 | covered work in a country, or your recipient's use of the covered work 510 | in a country, would infringe one or more identifiable patents in that 511 | country that you have reason to believe are valid. 512 | 513 | If, pursuant to or in connection with a single transaction or 514 | arrangement, you convey, or propagate by procuring conveyance of, a 515 | covered work, and grant a patent license to some of the parties 516 | receiving the covered work authorizing them to use, propagate, modify 517 | or convey a specific copy of the covered work, then the patent license 518 | you grant is automatically extended to all recipients of the covered 519 | work and works based on it. 520 | 521 | A patent license is "discriminatory" if it does not include within 522 | the scope of its coverage, prohibits the exercise of, or is 523 | conditioned on the non-exercise of one or more of the rights that are 524 | specifically granted under this License. You may not convey a covered 525 | work if you are a party to an arrangement with a third party that is 526 | in the business of distributing software, under which you make payment 527 | to the third party based on the extent of your activity of conveying 528 | the work, and under which the third party grants, to any of the 529 | parties who would receive the covered work from you, a discriminatory 530 | patent license (a) in connection with copies of the covered work 531 | conveyed by you (or copies made from those copies), or (b) primarily 532 | for and in connection with specific products or compilations that 533 | contain the covered work, unless you entered into that arrangement, 534 | or that patent license was granted, prior to 28 March 2007. 535 | 536 | Nothing in this License shall be construed as excluding or limiting 537 | any implied license or other defenses to infringement that may 538 | otherwise be available to you under applicable patent law. 539 | 540 | 12. No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # passive_radar 2 | Passive radar measurements using synchronized RTL-SDR DVB-T receivers 3 | 4 | Two DVB-T receivers were clocked from the same reference and data collected at 5 | 2.048 MS/s with one antenna facing the reference signal of a DVB-T emitter in Sendai, Japan, 6 | and the other Yagi-Uda antenna facing the target. The samples are collected as interleaved 7 | 8-bit integers (char) for saving space. The data are made available at 8 | https://www.iqengine.org under GNU Radio SigMF Repo -> Passive Radar (both channels split in 9 | two files during post-processing although initially saved as a single interleaved file). 10 | 11 | 12 | 13 | See [the 2018 FOSDEM presentation](https://archive.fosdem.org/2018/schedule/event/passiveradar/) 14 | for a description of the experiment 15 | 16 | # GNU Radio flowchart 17 | 18 | The GNU Radio flowchart is limited to two RTL-SDR sources provided by the OsmoSDR Source 19 | (``gr-osmosdr`` package in Debian GNU/Linux) whose output is interleaved and stored in a 20 | file. Be aware of the huge file size resulting from running this flowchart: at 2.4 MS/s, 32-bit 21 | float, two complex channels the datarate is 38.4 MB/s or 2.3 GB/minute. Post-processing involves 22 | running the cross-correlation between both channels for all possible frequency offsets introduced 23 | by moving targets. 24 | 25 | 26 | 27 | In case multiple azimuths are considered, the dataflow must *never* between acquisitions or 28 | a random delay from the USB bus will be introduced from one acquisition to the next. The 0MQ 29 | Publish/Subscribe mechanism allows for continuously running the RTL-SDR stream while connecting 30 | the subscribe source to a file only when the new azimuth has stabilized. 31 | 32 | See W. Feng, J.-M Friedt, G. Cherniak, M. Sato, *Passive bistatic radar using DVB-T receivers as general-purpose software-defined radio receivers* , Rev. Sci. Instrum. vol.89, 104701 (Sept. 2018) at http://jmfriedt.free.fr/dvbt_hardware.pdf for a detailed description of the setup. 33 | -------------------------------------------------------------------------------- /dual_rtl_sdr.grc: -------------------------------------------------------------------------------- 1 | options: 2 | parameters: 3 | author: '' 4 | catch_exceptions: 'True' 5 | category: '[GRC Hier Blocks]' 6 | cmake_opt: '' 7 | comment: '' 8 | copyright: '' 9 | description: '' 10 | gen_cmake: 'On' 11 | gen_linking: dynamic 12 | generate_options: qt_gui 13 | hier_block_src_path: '.:' 14 | id: dual_rtl_sdr 15 | max_nouts: '0' 16 | output_language: python 17 | placement: (0,0) 18 | qt_qss_theme: '' 19 | realtime_scheduling: '' 20 | run: 'True' 21 | run_command: '{python} -u {filename}' 22 | run_options: prompt 23 | sizing_mode: fixed 24 | thread_safe_setters: '' 25 | title: Not titled yet 26 | window_size: (1000,1000) 27 | states: 28 | bus_sink: false 29 | bus_source: false 30 | bus_structure: null 31 | coordinate: [456, 120.0] 32 | rotation: 0 33 | state: enabled 34 | 35 | blocks: 36 | - name: f 37 | id: variable_qtgui_range 38 | parameters: 39 | comment: Tune to the DVB-T emitter frequency 40 | gui_hint: '' 41 | label: '' 42 | min_len: '200' 43 | orient: QtCore.Qt.Horizontal 44 | rangeType: float 45 | start: '400' 46 | step: '.1' 47 | stop: '800' 48 | value: '500' 49 | widget: counter_slider 50 | states: 51 | bus_sink: false 52 | bus_source: false 53 | bus_structure: null 54 | coordinate: [328, 120.0] 55 | rotation: 0 56 | state: true 57 | - name: samp_rate 58 | id: variable 59 | parameters: 60 | comment: '' 61 | value: 2.4e6 62 | states: 63 | bus_sink: false 64 | bus_source: false 65 | bus_structure: null 66 | coordinate: [232, 120.0] 67 | rotation: 0 68 | state: enabled 69 | - name: blocks_file_sink_0 70 | id: blocks_file_sink 71 | parameters: 72 | affinity: '' 73 | alias: '' 74 | append: 'False' 75 | comment: '' 76 | file: /tmp/output.bin 77 | type: complex 78 | unbuffered: 'False' 79 | vlen: '1' 80 | states: 81 | bus_sink: false 82 | bus_source: false 83 | bus_structure: null 84 | coordinate: [472, 296.0] 85 | rotation: 0 86 | state: true 87 | - name: blocks_interleave_0 88 | id: blocks_interleave 89 | parameters: 90 | affinity: '' 91 | alias: '' 92 | blocksize: '1' 93 | comment: '' 94 | maxoutbuf: '0' 95 | minoutbuf: '0' 96 | num_streams: '2' 97 | type: complex 98 | vlen: '1' 99 | states: 100 | bus_sink: false 101 | bus_source: false 102 | bus_structure: null 103 | coordinate: [352, 304.0] 104 | rotation: 0 105 | state: true 106 | - name: osmosdr_source_0 107 | id: osmosdr_source 108 | parameters: 109 | affinity: '' 110 | alias: '' 111 | ant0: '' 112 | ant1: '' 113 | ant10: '' 114 | ant11: '' 115 | ant12: '' 116 | ant13: '' 117 | ant14: '' 118 | ant15: '' 119 | ant16: '' 120 | ant17: '' 121 | ant18: '' 122 | ant19: '' 123 | ant2: '' 124 | ant20: '' 125 | ant21: '' 126 | ant22: '' 127 | ant23: '' 128 | ant24: '' 129 | ant25: '' 130 | ant26: '' 131 | ant27: '' 132 | ant28: '' 133 | ant29: '' 134 | ant3: '' 135 | ant30: '' 136 | ant31: '' 137 | ant4: '' 138 | ant5: '' 139 | ant6: '' 140 | ant7: '' 141 | ant8: '' 142 | ant9: '' 143 | args: '""' 144 | bb_gain0: '20' 145 | bb_gain1: '20' 146 | bb_gain10: '20' 147 | bb_gain11: '20' 148 | bb_gain12: '20' 149 | bb_gain13: '20' 150 | bb_gain14: '20' 151 | bb_gain15: '20' 152 | bb_gain16: '20' 153 | bb_gain17: '20' 154 | bb_gain18: '20' 155 | bb_gain19: '20' 156 | bb_gain2: '20' 157 | bb_gain20: '20' 158 | bb_gain21: '20' 159 | bb_gain22: '20' 160 | bb_gain23: '20' 161 | bb_gain24: '20' 162 | bb_gain25: '20' 163 | bb_gain26: '20' 164 | bb_gain27: '20' 165 | bb_gain28: '20' 166 | bb_gain29: '20' 167 | bb_gain3: '20' 168 | bb_gain30: '20' 169 | bb_gain31: '20' 170 | bb_gain4: '20' 171 | bb_gain5: '20' 172 | bb_gain6: '20' 173 | bb_gain7: '20' 174 | bb_gain8: '20' 175 | bb_gain9: '20' 176 | bw0: '0' 177 | bw1: '0' 178 | bw10: '0' 179 | bw11: '0' 180 | bw12: '0' 181 | bw13: '0' 182 | bw14: '0' 183 | bw15: '0' 184 | bw16: '0' 185 | bw17: '0' 186 | bw18: '0' 187 | bw19: '0' 188 | bw2: '0' 189 | bw20: '0' 190 | bw21: '0' 191 | bw22: '0' 192 | bw23: '0' 193 | bw24: '0' 194 | bw25: '0' 195 | bw26: '0' 196 | bw27: '0' 197 | bw28: '0' 198 | bw29: '0' 199 | bw3: '0' 200 | bw30: '0' 201 | bw31: '0' 202 | bw4: '0' 203 | bw5: '0' 204 | bw6: '0' 205 | bw7: '0' 206 | bw8: '0' 207 | bw9: '0' 208 | clock_source0: '' 209 | clock_source1: '' 210 | clock_source2: '' 211 | clock_source3: '' 212 | clock_source4: '' 213 | clock_source5: '' 214 | clock_source6: '' 215 | clock_source7: '' 216 | comment: '' 217 | corr0: '0' 218 | corr1: '0' 219 | corr10: '0' 220 | corr11: '0' 221 | corr12: '0' 222 | corr13: '0' 223 | corr14: '0' 224 | corr15: '0' 225 | corr16: '0' 226 | corr17: '0' 227 | corr18: '0' 228 | corr19: '0' 229 | corr2: '0' 230 | corr20: '0' 231 | corr21: '0' 232 | corr22: '0' 233 | corr23: '0' 234 | corr24: '0' 235 | corr25: '0' 236 | corr26: '0' 237 | corr27: '0' 238 | corr28: '0' 239 | corr29: '0' 240 | corr3: '0' 241 | corr30: '0' 242 | corr31: '0' 243 | corr4: '0' 244 | corr5: '0' 245 | corr6: '0' 246 | corr7: '0' 247 | corr8: '0' 248 | corr9: '0' 249 | dc_offset_mode0: '0' 250 | dc_offset_mode1: '0' 251 | dc_offset_mode10: '0' 252 | dc_offset_mode11: '0' 253 | dc_offset_mode12: '0' 254 | dc_offset_mode13: '0' 255 | dc_offset_mode14: '0' 256 | dc_offset_mode15: '0' 257 | dc_offset_mode16: '0' 258 | dc_offset_mode17: '0' 259 | dc_offset_mode18: '0' 260 | dc_offset_mode19: '0' 261 | dc_offset_mode2: '0' 262 | dc_offset_mode20: '0' 263 | dc_offset_mode21: '0' 264 | dc_offset_mode22: '0' 265 | dc_offset_mode23: '0' 266 | dc_offset_mode24: '0' 267 | dc_offset_mode25: '0' 268 | dc_offset_mode26: '0' 269 | dc_offset_mode27: '0' 270 | dc_offset_mode28: '0' 271 | dc_offset_mode29: '0' 272 | dc_offset_mode3: '0' 273 | dc_offset_mode30: '0' 274 | dc_offset_mode31: '0' 275 | dc_offset_mode4: '0' 276 | dc_offset_mode5: '0' 277 | dc_offset_mode6: '0' 278 | dc_offset_mode7: '0' 279 | dc_offset_mode8: '0' 280 | dc_offset_mode9: '0' 281 | freq0: f*1e6 282 | freq1: 100e6 283 | freq10: 100e6 284 | freq11: 100e6 285 | freq12: 100e6 286 | freq13: 100e6 287 | freq14: 100e6 288 | freq15: 100e6 289 | freq16: 100e6 290 | freq17: 100e6 291 | freq18: 100e6 292 | freq19: 100e6 293 | freq2: 100e6 294 | freq20: 100e6 295 | freq21: 100e6 296 | freq22: 100e6 297 | freq23: 100e6 298 | freq24: 100e6 299 | freq25: 100e6 300 | freq26: 100e6 301 | freq27: 100e6 302 | freq28: 100e6 303 | freq29: 100e6 304 | freq3: 100e6 305 | freq30: 100e6 306 | freq31: 100e6 307 | freq4: 100e6 308 | freq5: 100e6 309 | freq6: 100e6 310 | freq7: 100e6 311 | freq8: 100e6 312 | freq9: 100e6 313 | gain0: '39' 314 | gain1: '10' 315 | gain10: '10' 316 | gain11: '10' 317 | gain12: '10' 318 | gain13: '10' 319 | gain14: '10' 320 | gain15: '10' 321 | gain16: '10' 322 | gain17: '10' 323 | gain18: '10' 324 | gain19: '10' 325 | gain2: '10' 326 | gain20: '10' 327 | gain21: '10' 328 | gain22: '10' 329 | gain23: '10' 330 | gain24: '10' 331 | gain25: '10' 332 | gain26: '10' 333 | gain27: '10' 334 | gain28: '10' 335 | gain29: '10' 336 | gain3: '10' 337 | gain30: '10' 338 | gain31: '10' 339 | gain4: '10' 340 | gain5: '10' 341 | gain6: '10' 342 | gain7: '10' 343 | gain8: '10' 344 | gain9: '10' 345 | gain_mode0: 'False' 346 | gain_mode1: 'False' 347 | gain_mode10: 'False' 348 | gain_mode11: 'False' 349 | gain_mode12: 'False' 350 | gain_mode13: 'False' 351 | gain_mode14: 'False' 352 | gain_mode15: 'False' 353 | gain_mode16: 'False' 354 | gain_mode17: 'False' 355 | gain_mode18: 'False' 356 | gain_mode19: 'False' 357 | gain_mode2: 'False' 358 | gain_mode20: 'False' 359 | gain_mode21: 'False' 360 | gain_mode22: 'False' 361 | gain_mode23: 'False' 362 | gain_mode24: 'False' 363 | gain_mode25: 'False' 364 | gain_mode26: 'False' 365 | gain_mode27: 'False' 366 | gain_mode28: 'False' 367 | gain_mode29: 'False' 368 | gain_mode3: 'False' 369 | gain_mode30: 'False' 370 | gain_mode31: 'False' 371 | gain_mode4: 'False' 372 | gain_mode5: 'False' 373 | gain_mode6: 'False' 374 | gain_mode7: 'False' 375 | gain_mode8: 'False' 376 | gain_mode9: 'False' 377 | if_gain0: '20' 378 | if_gain1: '20' 379 | if_gain10: '20' 380 | if_gain11: '20' 381 | if_gain12: '20' 382 | if_gain13: '20' 383 | if_gain14: '20' 384 | if_gain15: '20' 385 | if_gain16: '20' 386 | if_gain17: '20' 387 | if_gain18: '20' 388 | if_gain19: '20' 389 | if_gain2: '20' 390 | if_gain20: '20' 391 | if_gain21: '20' 392 | if_gain22: '20' 393 | if_gain23: '20' 394 | if_gain24: '20' 395 | if_gain25: '20' 396 | if_gain26: '20' 397 | if_gain27: '20' 398 | if_gain28: '20' 399 | if_gain29: '20' 400 | if_gain3: '20' 401 | if_gain30: '20' 402 | if_gain31: '20' 403 | if_gain4: '20' 404 | if_gain5: '20' 405 | if_gain6: '20' 406 | if_gain7: '20' 407 | if_gain8: '20' 408 | if_gain9: '20' 409 | iq_balance_mode0: '0' 410 | iq_balance_mode1: '0' 411 | iq_balance_mode10: '0' 412 | iq_balance_mode11: '0' 413 | iq_balance_mode12: '0' 414 | iq_balance_mode13: '0' 415 | iq_balance_mode14: '0' 416 | iq_balance_mode15: '0' 417 | iq_balance_mode16: '0' 418 | iq_balance_mode17: '0' 419 | iq_balance_mode18: '0' 420 | iq_balance_mode19: '0' 421 | iq_balance_mode2: '0' 422 | iq_balance_mode20: '0' 423 | iq_balance_mode21: '0' 424 | iq_balance_mode22: '0' 425 | iq_balance_mode23: '0' 426 | iq_balance_mode24: '0' 427 | iq_balance_mode25: '0' 428 | iq_balance_mode26: '0' 429 | iq_balance_mode27: '0' 430 | iq_balance_mode28: '0' 431 | iq_balance_mode29: '0' 432 | iq_balance_mode3: '0' 433 | iq_balance_mode30: '0' 434 | iq_balance_mode31: '0' 435 | iq_balance_mode4: '0' 436 | iq_balance_mode5: '0' 437 | iq_balance_mode6: '0' 438 | iq_balance_mode7: '0' 439 | iq_balance_mode8: '0' 440 | iq_balance_mode9: '0' 441 | maxoutbuf: '0' 442 | minoutbuf: '0' 443 | nchan: '1' 444 | num_mboards: '1' 445 | sample_rate: samp_rate 446 | sync: sync 447 | time_source0: '' 448 | time_source1: '' 449 | time_source2: '' 450 | time_source3: '' 451 | time_source4: '' 452 | time_source5: '' 453 | time_source6: '' 454 | time_source7: '' 455 | type: fc32 456 | states: 457 | bus_sink: false 458 | bus_source: false 459 | bus_structure: null 460 | coordinate: [24, 116.0] 461 | rotation: 0 462 | state: true 463 | - name: osmosdr_source_0_0 464 | id: osmosdr_source 465 | parameters: 466 | affinity: '' 467 | alias: '' 468 | ant0: '' 469 | ant1: '' 470 | ant10: '' 471 | ant11: '' 472 | ant12: '' 473 | ant13: '' 474 | ant14: '' 475 | ant15: '' 476 | ant16: '' 477 | ant17: '' 478 | ant18: '' 479 | ant19: '' 480 | ant2: '' 481 | ant20: '' 482 | ant21: '' 483 | ant22: '' 484 | ant23: '' 485 | ant24: '' 486 | ant25: '' 487 | ant26: '' 488 | ant27: '' 489 | ant28: '' 490 | ant29: '' 491 | ant3: '' 492 | ant30: '' 493 | ant31: '' 494 | ant4: '' 495 | ant5: '' 496 | ant6: '' 497 | ant7: '' 498 | ant8: '' 499 | ant9: '' 500 | args: '""' 501 | bb_gain0: '20' 502 | bb_gain1: '20' 503 | bb_gain10: '20' 504 | bb_gain11: '20' 505 | bb_gain12: '20' 506 | bb_gain13: '20' 507 | bb_gain14: '20' 508 | bb_gain15: '20' 509 | bb_gain16: '20' 510 | bb_gain17: '20' 511 | bb_gain18: '20' 512 | bb_gain19: '20' 513 | bb_gain2: '20' 514 | bb_gain20: '20' 515 | bb_gain21: '20' 516 | bb_gain22: '20' 517 | bb_gain23: '20' 518 | bb_gain24: '20' 519 | bb_gain25: '20' 520 | bb_gain26: '20' 521 | bb_gain27: '20' 522 | bb_gain28: '20' 523 | bb_gain29: '20' 524 | bb_gain3: '20' 525 | bb_gain30: '20' 526 | bb_gain31: '20' 527 | bb_gain4: '20' 528 | bb_gain5: '20' 529 | bb_gain6: '20' 530 | bb_gain7: '20' 531 | bb_gain8: '20' 532 | bb_gain9: '20' 533 | bw0: '0' 534 | bw1: '0' 535 | bw10: '0' 536 | bw11: '0' 537 | bw12: '0' 538 | bw13: '0' 539 | bw14: '0' 540 | bw15: '0' 541 | bw16: '0' 542 | bw17: '0' 543 | bw18: '0' 544 | bw19: '0' 545 | bw2: '0' 546 | bw20: '0' 547 | bw21: '0' 548 | bw22: '0' 549 | bw23: '0' 550 | bw24: '0' 551 | bw25: '0' 552 | bw26: '0' 553 | bw27: '0' 554 | bw28: '0' 555 | bw29: '0' 556 | bw3: '0' 557 | bw30: '0' 558 | bw31: '0' 559 | bw4: '0' 560 | bw5: '0' 561 | bw6: '0' 562 | bw7: '0' 563 | bw8: '0' 564 | bw9: '0' 565 | clock_source0: '' 566 | clock_source1: '' 567 | clock_source2: '' 568 | clock_source3: '' 569 | clock_source4: '' 570 | clock_source5: '' 571 | clock_source6: '' 572 | clock_source7: '' 573 | comment: '' 574 | corr0: '0' 575 | corr1: '0' 576 | corr10: '0' 577 | corr11: '0' 578 | corr12: '0' 579 | corr13: '0' 580 | corr14: '0' 581 | corr15: '0' 582 | corr16: '0' 583 | corr17: '0' 584 | corr18: '0' 585 | corr19: '0' 586 | corr2: '0' 587 | corr20: '0' 588 | corr21: '0' 589 | corr22: '0' 590 | corr23: '0' 591 | corr24: '0' 592 | corr25: '0' 593 | corr26: '0' 594 | corr27: '0' 595 | corr28: '0' 596 | corr29: '0' 597 | corr3: '0' 598 | corr30: '0' 599 | corr31: '0' 600 | corr4: '0' 601 | corr5: '0' 602 | corr6: '0' 603 | corr7: '0' 604 | corr8: '0' 605 | corr9: '0' 606 | dc_offset_mode0: '0' 607 | dc_offset_mode1: '0' 608 | dc_offset_mode10: '0' 609 | dc_offset_mode11: '0' 610 | dc_offset_mode12: '0' 611 | dc_offset_mode13: '0' 612 | dc_offset_mode14: '0' 613 | dc_offset_mode15: '0' 614 | dc_offset_mode16: '0' 615 | dc_offset_mode17: '0' 616 | dc_offset_mode18: '0' 617 | dc_offset_mode19: '0' 618 | dc_offset_mode2: '0' 619 | dc_offset_mode20: '0' 620 | dc_offset_mode21: '0' 621 | dc_offset_mode22: '0' 622 | dc_offset_mode23: '0' 623 | dc_offset_mode24: '0' 624 | dc_offset_mode25: '0' 625 | dc_offset_mode26: '0' 626 | dc_offset_mode27: '0' 627 | dc_offset_mode28: '0' 628 | dc_offset_mode29: '0' 629 | dc_offset_mode3: '0' 630 | dc_offset_mode30: '0' 631 | dc_offset_mode31: '0' 632 | dc_offset_mode4: '0' 633 | dc_offset_mode5: '0' 634 | dc_offset_mode6: '0' 635 | dc_offset_mode7: '0' 636 | dc_offset_mode8: '0' 637 | dc_offset_mode9: '0' 638 | freq0: f*1e6 639 | freq1: 100e6 640 | freq10: 100e6 641 | freq11: 100e6 642 | freq12: 100e6 643 | freq13: 100e6 644 | freq14: 100e6 645 | freq15: 100e6 646 | freq16: 100e6 647 | freq17: 100e6 648 | freq18: 100e6 649 | freq19: 100e6 650 | freq2: 100e6 651 | freq20: 100e6 652 | freq21: 100e6 653 | freq22: 100e6 654 | freq23: 100e6 655 | freq24: 100e6 656 | freq25: 100e6 657 | freq26: 100e6 658 | freq27: 100e6 659 | freq28: 100e6 660 | freq29: 100e6 661 | freq3: 100e6 662 | freq30: 100e6 663 | freq31: 100e6 664 | freq4: 100e6 665 | freq5: 100e6 666 | freq6: 100e6 667 | freq7: 100e6 668 | freq8: 100e6 669 | freq9: 100e6 670 | gain0: '39' 671 | gain1: '10' 672 | gain10: '10' 673 | gain11: '10' 674 | gain12: '10' 675 | gain13: '10' 676 | gain14: '10' 677 | gain15: '10' 678 | gain16: '10' 679 | gain17: '10' 680 | gain18: '10' 681 | gain19: '10' 682 | gain2: '10' 683 | gain20: '10' 684 | gain21: '10' 685 | gain22: '10' 686 | gain23: '10' 687 | gain24: '10' 688 | gain25: '10' 689 | gain26: '10' 690 | gain27: '10' 691 | gain28: '10' 692 | gain29: '10' 693 | gain3: '10' 694 | gain30: '10' 695 | gain31: '10' 696 | gain4: '10' 697 | gain5: '10' 698 | gain6: '10' 699 | gain7: '10' 700 | gain8: '10' 701 | gain9: '10' 702 | gain_mode0: 'False' 703 | gain_mode1: 'False' 704 | gain_mode10: 'False' 705 | gain_mode11: 'False' 706 | gain_mode12: 'False' 707 | gain_mode13: 'False' 708 | gain_mode14: 'False' 709 | gain_mode15: 'False' 710 | gain_mode16: 'False' 711 | gain_mode17: 'False' 712 | gain_mode18: 'False' 713 | gain_mode19: 'False' 714 | gain_mode2: 'False' 715 | gain_mode20: 'False' 716 | gain_mode21: 'False' 717 | gain_mode22: 'False' 718 | gain_mode23: 'False' 719 | gain_mode24: 'False' 720 | gain_mode25: 'False' 721 | gain_mode26: 'False' 722 | gain_mode27: 'False' 723 | gain_mode28: 'False' 724 | gain_mode29: 'False' 725 | gain_mode3: 'False' 726 | gain_mode30: 'False' 727 | gain_mode31: 'False' 728 | gain_mode4: 'False' 729 | gain_mode5: 'False' 730 | gain_mode6: 'False' 731 | gain_mode7: 'False' 732 | gain_mode8: 'False' 733 | gain_mode9: 'False' 734 | if_gain0: '20' 735 | if_gain1: '20' 736 | if_gain10: '20' 737 | if_gain11: '20' 738 | if_gain12: '20' 739 | if_gain13: '20' 740 | if_gain14: '20' 741 | if_gain15: '20' 742 | if_gain16: '20' 743 | if_gain17: '20' 744 | if_gain18: '20' 745 | if_gain19: '20' 746 | if_gain2: '20' 747 | if_gain20: '20' 748 | if_gain21: '20' 749 | if_gain22: '20' 750 | if_gain23: '20' 751 | if_gain24: '20' 752 | if_gain25: '20' 753 | if_gain26: '20' 754 | if_gain27: '20' 755 | if_gain28: '20' 756 | if_gain29: '20' 757 | if_gain3: '20' 758 | if_gain30: '20' 759 | if_gain31: '20' 760 | if_gain4: '20' 761 | if_gain5: '20' 762 | if_gain6: '20' 763 | if_gain7: '20' 764 | if_gain8: '20' 765 | if_gain9: '20' 766 | iq_balance_mode0: '0' 767 | iq_balance_mode1: '0' 768 | iq_balance_mode10: '0' 769 | iq_balance_mode11: '0' 770 | iq_balance_mode12: '0' 771 | iq_balance_mode13: '0' 772 | iq_balance_mode14: '0' 773 | iq_balance_mode15: '0' 774 | iq_balance_mode16: '0' 775 | iq_balance_mode17: '0' 776 | iq_balance_mode18: '0' 777 | iq_balance_mode19: '0' 778 | iq_balance_mode2: '0' 779 | iq_balance_mode20: '0' 780 | iq_balance_mode21: '0' 781 | iq_balance_mode22: '0' 782 | iq_balance_mode23: '0' 783 | iq_balance_mode24: '0' 784 | iq_balance_mode25: '0' 785 | iq_balance_mode26: '0' 786 | iq_balance_mode27: '0' 787 | iq_balance_mode28: '0' 788 | iq_balance_mode29: '0' 789 | iq_balance_mode3: '0' 790 | iq_balance_mode30: '0' 791 | iq_balance_mode31: '0' 792 | iq_balance_mode4: '0' 793 | iq_balance_mode5: '0' 794 | iq_balance_mode6: '0' 795 | iq_balance_mode7: '0' 796 | iq_balance_mode8: '0' 797 | iq_balance_mode9: '0' 798 | maxoutbuf: '0' 799 | minoutbuf: '0' 800 | nchan: '1' 801 | num_mboards: '1' 802 | sample_rate: samp_rate 803 | sync: sync 804 | time_source0: '' 805 | time_source1: '' 806 | time_source2: '' 807 | time_source3: '' 808 | time_source4: '' 809 | time_source5: '' 810 | time_source6: '' 811 | time_source7: '' 812 | type: fc32 813 | states: 814 | bus_sink: false 815 | bus_source: false 816 | bus_structure: null 817 | coordinate: [24, 340.0] 818 | rotation: 0 819 | state: true 820 | 821 | connections: 822 | - [blocks_interleave_0, '0', blocks_file_sink_0, '0'] 823 | - [osmosdr_source_0, '0', blocks_interleave_0, '0'] 824 | - [osmosdr_source_0_0, '0', blocks_interleave_0, '1'] 825 | 826 | metadata: 827 | file_format: 1 828 | grc_version: 3.10.5.1 829 | -------------------------------------------------------------------------------- /dual_rtl_sdr.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jmfriedt/passive_radar/48c7911cb67ad97944e1f2aaf830aa9c79ae039f/dual_rtl_sdr.png --------------------------------------------------------------------------------