'프로그램 사용' 카테고리의 글 목록 (38 Page)

'프로그램 사용'에 해당되는 글 2311건

2021.12.25 ISS(국제우주정거장) 궤도
2021.12.23 gnu radio
2021.12.23 NEO-6M GPS 안테나
2021.12.22 rtl sdr gps gnss-sdr 실패
2021.12.21 sdr gnss
2021.12.21 sdr noaa 준비
2021.12.19 RTL-SDR NOAA 위성 수신하기 2차 시도도 반쪽 성공 2
2021.12.19 sdr gps linux
2021.12.19 rt1090 ubuntu rpi
2021.12.18 rtl-sdr rpi 노이즈?

ISS(국제우주정거장) 궤도

ISS 주파수 한번 들어보고 싶어서 찾아보는데

새벽 4시에 지나가긴 하네.. 1월 6일, 1월 8일 정도에 시도해볼까?

Satellite passes / Orbitron 3.71 / www.stoff.pl

Location      : Seoul (127.2239?E, 37.5789?N)
Time zone     : UTC +9:00
Search period : 2021-12-25 19:36:46 - 31 days
                2022-01-25 19:36:46
Conditions    : Maximum sun elevation = -5 deg
                Minimum sat elevation = 25 deg
                Illumination NOT required

Time                Satellite              Azm  Elv  Mag Range S.Azm S.Elv
--------------------------------------------------------------------------
2021-12-26 04:05:15 ISS                  209.1 25.1  ecl   879  88.5 -42.5
2021-12-26 04:06:58 ISS                  137.3 59.8  ecl   482  88.8 -42.1
2021-12-26 04:08:42 ISS                   64.8 25.1  ecl   884  89.1 -41.8

2021-12-27 03:18:30 ISS                  170.9 25.1  ecl   880  80.3 -51.8
2021-12-27 03:19:36 ISS                  133.4 31.7  ecl   743  80.5 -51.5
2021-12-27 03:20:43 ISS                   95.4 25.0  ecl   884  80.7 -51.3

2021-12-27 04:55:50 ISS                  310.5 25.1  ecl   885  95.8 -32.5
2021-12-27 04:56:25 ISS                  329.2 26.6  ecl   850  95.9 -32.4
2021-12-27 04:57:01 ISS                  348.5 25.0  ecl   887  96.0 -32.3

2021-12-28 04:07:23 ISS                  269.8 25.2  ecl   880  88.6 -42.2
2021-12-28 04:08:52 ISS                  325.0 41.4  ecl   614  88.8 -41.9
2021-12-28 04:10:22 ISS                   20.4 25.0  ecl   887  89.1 -41.6

2021-12-29 03:19:35 ISS                  239.7 25.1  ecl   880  80.2 -51.7
2021-12-29 03:21:22 ISS                  320.0 73.2  ecl   438  80.5 -51.3
2021-12-29 03:23:10 ISS                   42.1 25.1  ecl   884  80.9 -51.0

2021-12-30 02:32:13 ISS                  209.5 25.2  ecl   877  69.0 -60.8
2021-12-30 02:33:56 ISS                  137.0 60.3  ecl   479  69.5 -60.5
2021-12-30 02:35:40 ISS                   64.4 25.1  ecl   883  69.9 -60.1

2021-12-31 01:45:26 ISS                  171.6 25.0  ecl   879  51.8 -68.9
2021-12-31 01:46:33 ISS                  133.4 32.0  ecl   738  52.3 -68.7
2021-12-31 01:47:40 ISS                   95.2 25.1  ecl   880  52.8 -68.6

2021-12-31 03:22:49 ISS                  311.7 25.1  ecl   884  80.4 -51.2
2021-12-31 03:23:22 ISS                  329.3 26.4  ecl   853  80.5 -51.1
2021-12-31 03:23:56 ISS                  347.5 25.0  ecl   886  80.7 -51.0

2022-01-01 02:34:19 ISS                  270.1 25.0  ecl   882  69.1 -60.5
2022-01-01 02:35:48 ISS                  325.0 41.1  ecl   617  69.5 -60.2
2022-01-01 02:37:17 ISS                   19.9 25.1  ecl   883  69.9 -59.9

2022-01-02 01:46:31 ISS                  240.1 25.2  ecl   876  51.6 -68.8
2022-01-02 01:48:17 ISS                  319.5 72.6  ecl   439  52.4 -68.5
2022-01-02 01:50:05 ISS                   41.8 25.1  ecl   883  53.2 -68.2

2022-01-03 00:59:07 ISS                  210.0 25.1  ecl   877  20.9 -74.4
2022-01-03 01:00:50 ISS                  137.6 60.9  ecl   476  22.3 -74.3
2022-01-03 01:02:34 ISS                   64.1 25.2  ecl   880  23.7 -74.2

2022-01-04 00:12:19 ISS                  172.1 25.1  ecl   877 339.6 -74.4
2022-01-04 00:13:27 ISS                  133.0 32.2  ecl   734 340.5 -74.5
2022-01-04 00:14:35 ISS                   94.3 25.0  ecl   882 341.5 -74.5

2022-01-04 01:49:44 ISS                  312.5 25.0  ecl   884  52.3 -68.3
2022-01-04 01:50:16 ISS                  329.6 26.2  ecl   856  52.5 -68.2
2022-01-04 01:50:47 ISS                  346.2 25.1  ecl   884  52.7 -68.1

2022-01-05 01:01:12 ISS                  270.5 25.0  ecl   882  21.6 -74.2
2022-01-05 01:02:41 ISS                  325.4 40.8  ecl   619  22.8 -74.0
2022-01-05 01:04:09 ISS                   19.5 25.1  ecl   882  24.0 -73.9

2022-01-06 00:13:22 ISS                  240.4 25.0  ecl   880 340.0 -74.2
2022-01-06 00:15:09 ISS                  320.5 72.1  ecl   440 341.4 -74.3
2022-01-06 00:16:56 ISS                   41.5 25.2  ecl   879 342.9 -74.4

2022-01-06 06:44:13 ISS                  323.4 25.1  0.0   886 109.2 -12.1
2022-01-06 06:45:58 ISS                   37.4 62.6 -1.3   472 109.5 -11.8
2022-01-06 06:47:44 ISS                  112.8 25.0  0.2   887 109.7 -11.5

2022-01-06 23:25:58 ISS                  210.3 25.2  ecl   875 309.7 -68.5
2022-01-06 23:27:41 ISS                  137.3 61.3  ecl   474 310.5 -68.8
2022-01-06 23:29:25 ISS                   63.9 25.1  ecl   880 311.4 -69.0

2022-01-07 05:57:05 ISS                  346.2 25.2  ecl   885 102.6 -21.1
2022-01-07 05:58:26 ISS                   34.2 36.5 -0.7   675 102.8 -20.8
2022-01-07 05:59:47 ISS                   81.9 25.0  0.0   888 103.0 -20.6

2022-01-07 22:39:08 ISS                  172.7 25.1  ecl   878 292.6 -60.4
2022-01-07 22:40:16 ISS                  133.7 32.4  ecl   730 292.9 -60.6
2022-01-07 22:41:25 ISS                   94.2 25.1  ecl   880 293.2 -60.8

2022-01-08 00:16:36 ISS                  313.7 25.1  ecl   883 342.1 -74.1
2022-01-08 00:17:06 ISS                  329.7 26.1  ecl   858 342.5 -74.1
2022-01-08 00:17:36 ISS                  345.7 25.0  ecl   885 343.0 -74.2

2022-01-08 06:46:19 ISS                  274.8 25.0 -0.1   887 109.2 -11.7
2022-01-08 06:47:42 ISS                  225.5 37.3 -0.6   662 109.4 -11.5
2022-01-08 06:49:04 ISS                  176.8 25.0  0.1   885 109.6 -11.2

2022-01-08 23:28:02 ISS                  271.0 25.1  ecl   879 310.8 -68.5
2022-01-08 23:29:30 ISS                  325.4 40.6  ecl   621 311.5 -68.7
2022-01-08 23:30:58 ISS                   19.4 25.1  ecl   883 312.2 -68.9

2022-01-09 05:58:28 ISS                  301.6 25.0  ecl   888 102.5 -20.8
2022-01-09 06:00:16 ISS                  221.3 71.3  ecl   444 102.7 -20.5
2022-01-09 06:02:03 ISS                  142.5 25.1  0.0   884 103.0 -20.2

2022-01-09 22:40:11 ISS                  240.7 25.2  ecl   876 293.0 -60.2
2022-01-09 22:41:57 ISS                  320.0 71.7  ecl   441 293.6 -60.6
2022-01-09 22:43:44 ISS                   41.3 25.2  ecl   878 294.1 -60.9

2022-01-10 05:11:01 ISS                  323.3 25.2  ecl   883  95.8 -30.1
2022-01-10 05:12:46 ISS                   37.9 62.9  ecl   470  96.0 -29.8
2022-01-10 05:14:31 ISS                  112.9 25.2  ecl   882  96.2 -29.4

2022-01-10 21:52:45 ISS                  210.5 25.2  ecl   876 281.8 -51.1
2022-01-10 21:54:28 ISS                  137.9 61.6  ecl   472 282.1 -51.5
2022-01-10 21:56:12 ISS                   63.7 25.2  ecl   878 282.5 -51.8

2022-01-11 04:23:51 ISS                  345.8 25.0  ecl   887  88.6 -39.5
2022-01-11 04:25:13 ISS                   34.3 36.6  ecl   673  88.8 -39.2
2022-01-11 04:26:34 ISS                   82.1 25.0  ecl   886  89.0 -38.9

2022-01-11 21:05:54 ISS                  173.0 25.1  ecl   878 273.4 -41.8
2022-01-11 21:07:03 ISS                  133.3 32.5  ecl   728 273.6 -42.0
2022-01-11 21:08:12 ISS                   93.8 25.1  ecl   880 273.8 -42.2

2022-01-12 05:13:06 ISS                  274.3 25.1  ecl   883  95.6 -29.7
2022-01-12 05:14:28 ISS                  225.4 37.1  ecl   664  95.8 -29.4
2022-01-12 05:15:49 ISS                  177.3 25.1  ecl   882  96.0 -29.2

2022-01-12 21:54:48 ISS                  271.3 25.2  ecl   878 282.5 -51.2
2022-01-12 21:56:15 ISS                  324.9 40.4  ecl   623 282.8 -51.5
2022-01-12 21:57:43 ISS                   19.1 25.1  ecl   881 283.1 -51.8

2022-01-13 04:25:14 ISS                  301.4 25.2  ecl   882  88.3 -39.2
2022-01-13 04:27:01 ISS                  221.7 70.9  ecl   444  88.6 -38.8
2022-01-13 04:28:48 ISS                  142.7 25.0  ecl   883  88.9 -38.5

2022-01-13 21:06:55 ISS                  240.9 25.0  ecl   880 273.9 -41.6
2022-01-13 21:08:42 ISS                  321.0 71.4  ecl   441 274.2 -42.0
2022-01-13 21:10:29 ISS                   41.2 25.1  ecl   881 274.5 -42.3

2022-01-14 03:37:45 ISS                  323.1 25.1  ecl   884  79.9 -48.5
2022-01-14 03:39:30 ISS                   37.3 63.1  ecl   469  80.2 -48.2
2022-01-14 03:41:15 ISS                  113.0 25.2  ecl   879  80.5 -47.8

2022-01-14 20:19:28 ISS                  210.8 25.0  ecl   880 266.7 -32.1
2022-01-14 20:21:12 ISS                  137.5 61.9  ecl   471 267.0 -32.4
2022-01-14 20:22:56 ISS                   63.6 25.2  ecl   879 267.2 -32.8

2022-01-15 02:50:35 ISS                  345.9 25.1  ecl   884  69.0 -57.5
2022-01-15 02:51:56 ISS                   33.9 36.6  ecl   671  69.4 -57.2
2022-01-15 02:53:17 ISS                   82.1 25.1  ecl   883  69.7 -57.0

2022-01-15 19:32:36 ISS                  173.5 25.0  ecl   880 260.2 -22.7
2022-01-15 19:33:46 ISS                  133.2 32.6  ecl   726 260.4 -22.9
2022-01-15 19:34:55 ISS                   93.7 25.1  ecl   879 260.5 -23.2

2022-01-16 03:39:49 ISS                  274.0 25.1  ecl   882  79.7 -48.0
2022-01-16 03:41:10 ISS                  225.8 36.9  ecl   665  79.9 -47.8
2022-01-16 03:42:31 ISS                  177.5 25.1  ecl   881  80.2 -47.5

2022-01-16 20:21:30 ISS                  271.4 25.2  ecl   879 267.3 -32.2
2022-01-16 20:22:57 ISS                  324.9 40.3  ecl   624 267.5 -32.4
2022-01-16 20:24:25 ISS                   19.0 25.1  ecl   882 267.7 -32.7

2022-01-17 02:51:56 ISS                  301.2 25.2  ecl   880  68.7 -57.1
2022-01-17 02:53:42 ISS                  223.5 70.7  ecl   444  69.1 -56.8
2022-01-17 02:55:29 ISS                  142.9 25.1  ecl   879  69.6 -56.5

2022-01-17 19:33:36 ISS                  241.0 25.0  0.0   881 260.6 -22.6
2022-01-17 19:35:23 ISS                  320.7 71.2  ecl   442 260.9 -22.9
2022-01-17 19:37:10 ISS                   41.1 25.1  ecl   880 261.1 -23.3

2022-01-18 02:04:26 ISS                  323.1 25.1  ecl   883  52.6 -65.3
2022-01-18 02:06:11 ISS                   37.8 63.2  ecl   468  53.3 -65.0
2022-01-18 02:07:56 ISS                  113.2 25.1  ecl   880  54.0 -64.7

2022-01-18 18:46:09 ISS                  210.8 25.2  0.1   875 254.1 -13.2
2022-01-18 18:47:52 ISS                  137.9 62.0 -1.4   471 254.4 -13.5
2022-01-18 18:49:37 ISS                   63.4 25.0  ecl   883 254.6 -13.9

2022-01-19 01:17:15 ISS                  345.8 25.1  ecl   883  26.8 -71.2
2022-01-19 01:18:36 ISS                   34.0 36.6  ecl   670  27.7 -71.1
2022-01-19 01:19:57 ISS                   82.2 25.1  ecl   882  28.6 -71.0

2022-01-20 02:06:28 ISS                  274.0 25.1  ecl   882  52.5 -64.8
2022-01-20 02:07:49 ISS                  225.8 36.8  ecl   665  53.0 -64.5
2022-01-20 02:09:10 ISS                  177.6 25.0  ecl   881  53.6 -64.3

2022-01-20 18:48:08 ISS                  271.3 25.1  0.1   881 254.7 -13.2
2022-01-20 18:49:36 ISS                  325.4 40.3 -0.7   624 254.9 -13.5
2022-01-20 18:51:03 ISS                   18.8 25.2 -0.1   880 255.1 -13.8

2022-01-21 01:18:34 ISS                  301.2 25.1  ecl   881  26.8 -70.7
2022-01-21 01:20:21 ISS                  221.0 70.5  ecl   444  27.9 -70.6
2022-01-21 01:22:07 ISS                  143.0 25.1  ecl   879  29.1 -70.4

2022-01-22 00:31:03 ISS                  323.0 25.0  ecl   884 351.3 -72.1
2022-01-22 00:32:48 ISS                   37.2 63.2  ecl   467 352.6 -72.1
2022-01-22 00:34:33 ISS                  113.2 25.2  ecl   878 353.9 -72.1

2022-01-22 23:43:51 ISS                  345.7 25.0  ecl   884 320.5 -67.9
2022-01-22 23:45:12 ISS                   33.6 36.6  ecl   669 321.2 -68.1
2022-01-22 23:46:33 ISS                   82.0 25.1  ecl   879 321.9 -68.2

2022-01-24 00:33:04 ISS                  273.8 25.1  ecl   880 352.6 -71.6
2022-01-24 00:34:24 ISS                  226.2 36.8  ecl   665 353.5 -71.7
2022-01-24 00:35:45 ISS                  177.8 25.1  ecl   879 354.6 -71.7

2022-01-24 23:45:09 ISS                  301.2 25.2  ecl   878 321.6 -67.6
2022-01-24 23:46:55 ISS                  222.8 70.5  ecl   443 322.5 -67.8
2022-01-24 23:48:41 ISS                  143.0 25.2  ecl   875 323.5 -68.0

저작자표시 (새창열림)

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Posted by 구차니

gnu radio

[링크 : https://blog.naver.com/lastime1650/222290483592]

[링크 : https://hook.tistory.com/entry/HackRF-One과-GNU-Radio로-FM-라디오-방송-듣기]

[링크 : http://blogspot.tenettech.net/2019/09/26/video-streaming-using-gnu-radio-and-gstreamer/]

[링크 : http://wiki.oz9aec.net/index.php/Simple_DVB_with_Gstreamer_and_GNU_Radio]

저작자표시 (새창열림)

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NEO-6M GPS 안테나 (0)	2021.12.23
rtl sdr gps gnss-sdr 실패 (0)	2021.12.22
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Posted by 구차니

NEO-6M GPS 안테나

집에 굴러 다니는 GPS 가져와서 오랫만에 켜보는데

뒷면이 왜 깡통처리냐. 뜯긴 귀찮아! 싶어서

안을 살며시 보니 먼가 IC가 보인다.

그리고 IPEX 커넥터를 DC로 재보니 3.4V

얘도 안테나 에 LNA 내장이고 coax 케이블을 통해 bias tee가 공급되는 구조인 듯..

+

일하기 싫어 분해해보니

AT2659S ?

XC386_V1 으로 검색하니 나오는게 없다.

AT2659S 해당 칩이 먼진 모르겠지만

연관되어 검색되는게 MAX2659 GPS/GNSS Low-Noise Amplifier

[링크 : https://datasheets.maximintegrated.com/en/ds/MAX2659.pdf]

+

11번이 안테나 핀이고

8번을 통해 안테나로 다시 이어지는데 잘보니 8,9번 핀이 패턴으로 이어져있는 것 같고

9번핀은 VCC_RF로 전원을 공급해 주는 듯(3.3V)

[링크 : https://www.u-blox.com/sites/default/files/products/documents/NEO-6_DataSheet_(GPS.G6-HW-09005).pdf]

저작자표시 (새창열림)

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Posted by 구차니

rtl sdr gps gnss-sdr 실패

제대로 잡히면 아래와 같이 좌표, 고도, 속도가 나오는 듯?

First position fix at 2020-Jun-07 21:28:30.100000 UTC is Lat = 33.4932 [deg], Long = -111.901 [deg], Height= 335.778 [m]
Position at 2020-Jun-07 21:28:30.500000 UTC using 4 observations is Lat = 33.492972657 [deg], Long = -111.901343224 [deg], Height = 323.726 [m]
Velocity: East: 0.019 [m/s], North: -0.009 [m/s], Up = -0.015 [m/s]

[링크 : https://github.com/gnss-sdr/gnss-sdr/issues/295]

리눅스에서 gui로 볼 순 있는데 qt랑 온갖것을 설치하고 빌드해야 하니 조금 귀찮네

[링크 : https://github.com/acebrianjuan/gnss-sdr-monitor]

+

GPS 안테나를 찾아보는데 거의 3~5V 전원 공급 이야기가 있어서 보니

RTL-SDR.COM v3의 경우 RF로 4.5V의 전원을 공급해서 외부 LNA를 작동시킬수 있는

USB bias tee 라는 것이 존재한다.

[링크 : https://www.rtl-sdr.com/rtl-sdr-blog-v-3-dongles-user-guide/]

[링크 : https://www.rtl-sdr.com/signalseverywhere-sdr-bias-tees-and-enabling-the-v3-bias-tee/]

[링크 : https://www.onesdr.com/2020/02/07/software-defined-radios-and-bias-tees/]

[링크 : https://www.rtl-sdr.com/receiving-gps-with-an-rtl-sdr-dongle-and-gps-antenna/]

[링크 : https://www.rtl-sdr.com/rtl-sdr-blog-v-3-dongles-user-guide/]

[링크 : https://electro.pizza/2019/01/biast-adsb/]

혹시나 해서 내가 가진 것에 -T 옵션을 주고 해보았으나 UV쪽 포트에 전압이 0V로 뜬다.

RTL-SDR.com v3 를 사야하나...

$ rtl_tcp --help
rtl_tcp: invalid option -- '-'
rtl_tcp, an I/Q spectrum server for RTL2832 based DVB-T receivers

Usage: [-a listen address]
[-p listen port (default: 1234)]
[-f frequency to tune to [Hz]]
[-g gain (default: 0 for auto)]
[-s samplerate in Hz (default: 2048000 Hz)]
[-b number of buffers (default: 15, set by library)]
[-n max number of linked list buffers to keep (default: 500)]
[-d device index (default: 0)]
[-P ppm_error (default: 0)]
[-T enable bias-T on GPIO PIN 0 (works for rtl-sdr.com v3 dongles)]

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Posted by 구차니

sdr gnss

기본으로 제공된 내용을 사용해서 실행하는데 HackRF 장치가 맞지 않대서

$ gnss-sdr --config_file=my.conf
Initializing GNSS-SDR v0.0.11 ... Please wait.
Logging will be written at "/tmp"
Use gnss-sdr --log_dir=/path/to/log to change that.
OsmoSdr arguments: hackrf,bias=1
gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.8.1.0
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya freesrp
Failed to use '0' as HackRF device index: not enough devices
GNSS-SDR program ended.

HackRF 용 옵션을 빼니 잘 작동한다. (나중에 찾아보니 GPS 신호 증폭을 위한 USB bias tee 기능 활성화 하는 옵션)

$ cat my.conf
[GNSS-SDR]

;######### GLOBAL OPTIONS ##################
GNSS-SDR.internal_fs_sps=2000000

;######### SIGNAL_SOURCE CONFIG ############
SignalSource.implementation=Osmosdr_Signal_Source
SignalSource.item_type=gr_complex
SignalSource.sampling_frequency=2000000
SignalSource.freq=1575420000
SignalSource.gain=40
SignalSource.rf_gain=40
SignalSource.if_gain=30
SignalSource.AGC_enabled=false
SignalSource.samples=0
SignalSource.repeat=false
;# Next line enables the internal HackRF One bias (3.3 VDC)
;SignalSource.osmosdr_args=hackrf,bias=1
SignalSource.enable_throttle_control=false
SignalSource.dump=false
SignalSource.dump_filename=./signal_source.dat

아래와 같이 신호를 잡으려고 하고 계속 lock이 안되는데, 지하철에서 시도해서 그런가?

$ gnss-sdr --config_file=my.conf
Initializing GNSS-SDR v0.0.11 ... Please wait.
Logging will be written at "/tmp"
Use gnss-sdr --log_dir=/path/to/log to change that.
gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.8.1.0
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya freesrp
[INFO] [UHD] linux; GNU C++ version 9.2.1 20200304; Boost_107100; UHD_3.15.0.0-2build5

RtApiAlsa::getDeviceInfo: snd_pcm_open error for device (hw:0,0), Device or resource busy.

Found Rafael Micro R820T tuner
Using device #0 Realtek RTL2838UHIDIR SN: 00000001
Found Rafael Micro R820T tuner
[R82XX] PLL not locked!
Exact sample rate is: 2000000.052982 Hz
[R82XX] PLL not locked!
Actual RX Rate: 2000000.000000 [SPS]...
Actual RX Freq: 1575420000.000000 [Hz]...
PLL Frequency tune error 0.000000 [Hz]...
Actual RX Gain: 40.200000 dB...
Actual Bandwidth: 0.000000 [Hz]...
Starting a TCP/IP server of RTCM messages on port 2101
The TCP/IP server of RTCM messages is up and running. Accepting connections ...
Current receiver time: 1 s
Current receiver time: 2 s
Current receiver time: 3 s
Current receiver time: 4 s
Current receiver time: 5 s
Tracking of GPS L1 C/A signal started on channel 7 for satellite GPS PRN 08 (Block IIF)
Current receiver time: 6 s
Current receiver time: 7 s
Tracking of GPS L1 C/A signal started on channel 4 for satellite GPS PRN 25 (Block IIF)
Current receiver time: 8 s
Tracking of GPS L1 C/A signal started on channel 1 for satellite GPS PRN 22 (Block IIR)
Tracking of GPS L1 C/A signal started on channel 6 for satellite GPS PRN 16 (Block IIR)
Current receiver time: 9 s
Current receiver time: 10 s
Current receiver time: 11 s
Current receiver time: 12 s
Current receiver time: 13 s
Tracking of GPS L1 C/A signal started on channel 0 for satellite GPS PRN 27 (Block IIF)
Current receiver time: 14 s
Tracking of GPS L1 C/A signal started on channel 3 for satellite GPS PRN 13 (Block IIR)
Tracking of GPS L1 C/A signal started on channel 5 for satellite GPS PRN 32 (Block IIF)
Current receiver time: 15 s
Current receiver time: 16 s
Tracking of GPS L1 C/A signal started on channel 2 for satellite GPS PRN 04 (Block Unknown)
Current receiver time: 17 s
Current receiver time: 18 s
Current receiver time: 19 s
Current receiver time: 20 s
Current receiver time: 21 s
Loss of lock in channel 7!
Current receiver time: 22 s
Current receiver time: 23 s
Loss of lock in channel 4!
Current receiver time: 24 s
Tracking of GPS L1 C/A signal started on channel 7 for satellite GPS PRN 20 (Block IIR)
Loss of lock in channel 1!
Loss of lock in channel 6!
Tracking of GPS L1 C/A signal started on channel 6 for satellite GPS PRN 02 (Block IIR)
Current receiver time: 25 s
Tracking of GPS L1 C/A signal started on channel 4 for satellite GPS PRN 08 (Block IIF)
Current receiver time: 26 s
Loss of lock in channel 3!
Tracking of GPS L1 C/A signal started on channel 3 for satellite GPS PRN 26 (Block IIF)
Current receiver time: 27 s
Current receiver time: 28 s
Loss of lock in channel 0!
Current receiver time: 29 s
Tracking of GPS L1 C/A signal started on channel 0 for satellite GPS PRN 29 (Block IIR-M)
Current receiver time: 30 s
Tracking of GPS L1 C/A signal started on channel 1 for satellite GPS PRN 15 (Block IIR-M)
Loss of lock in channel 5!
Current receiver time: 31 s
Tracking of GPS L1 C/A signal started on channel 5 for satellite GPS PRN 10 (Block IIF)
Current receiver time: 32 s
Loss of lock in channel 2!
Current receiver time: 33 s
Current receiver time: 34 s
Current receiver time: 35 s
Tracking of GPS L1 C/A signal started on channel 2 for satellite GPS PRN 16 (Block IIR)
Current receiver time: 36 s
Loss of lock in channel 7!
Current receiver time: 37 s
Loss of lock in channel 4!
Tracking of GPS L1 C/A signal started on channel 7 for satellite GPS PRN 27 (Block IIF)
Current receiver time: 38 s
Current receiver time: 39 s
Current receiver time: 40 s
Loss of lock in channel 6!
Current receiver time: 41 s
Tracking of GPS L1 C/A signal started on channel 4 for satellite GPS PRN 32 (Block IIF)
Tracking of GPS L1 C/A signal started on channel 6 for satellite GPS PRN 04 (Block Unknown)
Current receiver time: 42 s
Loss of lock in channel 3!
Current receiver time: 43 s
Loss of lock in channel 5!
Current receiver time: 44 s
Tracking of GPS L1 C/A signal started on channel 3 for satellite GPS PRN 03 (Block IIF)
Current receiver time: 45 s
Loss of lock in channel 0!
Current receiver time: 46 s
Loss of lock in channel 1!
Loss of lock in channel 4!
Current receiver time: 47 s
Loss of lock in channel 2!
Tracking of GPS L1 C/A signal started on channel 4 for satellite GPS PRN 18 (Block IIR)
Current receiver time: 48 s
Tracking of GPS L1 C/A signal started on channel 5 for satellite GPS PRN 10 (Block IIF)
Current receiver time: 49 s
Tracking of GPS L1 C/A signal started on channel 2 for satellite GPS PRN 19 (Block IIR)
Current receiver time: 50 s
Current receiver time: 51 s
Tracking of GPS L1 C/A signal started on channel 0 for satellite GPS PRN 28 (Block IIR)
Loss of lock in channel 0!
Tracking of GPS L1 C/A signal started on channel 0 for satellite GPS PRN 22 (Block IIR)
Current receiver time: 52 s
Tracking of GPS L1 C/A signal started on channel 1 for satellite GPS PRN 28 (Block IIR)
Current receiver time: 53 s
Loss of lock in channel 7!
Current receiver time: 54 s
Current receiver time: 55 s
Tracking of GPS L1 C/A signal started on channel 7 for satellite GPS PRN 16 (Block IIR)
Current receiver time: 56 s
Current receiver time: 57 s
Loss of lock in channel 6!
Current receiver time: 58 s
Tracking of GPS L1 C/A signal started on channel 6 for satellite GPS PRN 32 (Block IIF)
Current receiver time: 59 s
Current receiver time: 1 min 0 s
Loss of lock in channel 3!
Current receiver time: 1 min 1 s
Tracking of GPS L1 C/A signal started on channel 3 for satellite GPS PRN 14 (Block IIR)
Current receiver time: 1 min 2 s
Current receiver time: 1 min 3 s
Loss of lock in channel 4!
Current receiver time: 1 min 4 s
Loss of lock in channel 5!
Current receiver time: 1 min 5 s
Loss of lock in channel 2!
Tracking of GPS L1 C/A signal started on channel 5 for satellite GPS PRN 08 (Block IIF)
Current receiver time: 1 min 6 s
Tracking of GPS L1 C/A signal started on channel 2 for satellite GPS PRN 26 (Block IIF)
Tracking of GPS L1 C/A signal started on channel 4 for satellite GPS PRN 05 (Block IIR-M)
Current receiver time: 1 min 7 s
Loss of lock in channel 0!
Current receiver time: 1 min 8 s
Loss of lock in channel 1!
Current receiver time: 1 min 9 s
Current receiver time: 1 min 10 s
Loss of lock in channel 7!
Current receiver time: 1 min 11 s
Tracking of GPS L1 C/A signal started on channel 1 for satellite GPS PRN 31 (Block IIR-M)
Loss of lock in channel 1!
Current receiver time: 1 min 12 s
Tracking of GPS L1 C/A signal started on channel 0 for satellite GPS PRN 06 (Block IIF)
Loss of lock in channel 0!
Current receiver time: 1 min 13 s
Tracking of GPS L1 C/A signal started on channel 7 for satellite GPS PRN 22 (Block IIR)
Tracking of GPS L1 C/A signal started on channel 1 for satellite GPS PRN 03 (Block IIF)
Current receiver time: 1 min 14 s
Loss of lock in channel 6!
Current receiver time: 1 min 15 s
Tracking of GPS L1 C/A signal started on channel 0 for satellite GPS PRN 01 (Block IIF)
Current receiver time: 1 min 16 s
Current receiver time: 1 min 17 s

[링크 : https://gnss-sdr.org/docs/tutorials/gnss-sdr-operation-realtek-rtl2832u-usb-dongle-dvb-t-receiver/]

gnss의 경우 rtl_tcp를 통해 원격지의 정보를 받아올 수 도 있는 듯.

In case of using a Zarlink's RTL2832 based DVB-T receiver, you can even use the rtl_tcp I/Q server in order to use the USB dongle remotely. In a terminal, type:

$ rtl_tcp -a 127.0.0.1 -p 1234 -f 1575420000 -g 0 -s 2000000
and use the following configuration:

;######### SIGNAL_SOURCE CONFIG ############
SignalSource.implementation=RtlTcp_Signal_Source

[링크 : https://github.com/gnss-sdr/gnss-sdr#build-osmosdr-support-optional]

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sdr noaa 준비

decimation 기본값은 None 인데

이경우 input rate 값 그대로 sample rate가 나온다.

decimation을 32로 하면 input rate / decimation 해서

sample rate가 3.2MSPS 에서 0.1MSPS = 100KSPS로 설정된다.

So with a 32x decimation, we should increase 2.5 Bits ( log 32 in base 4 ) in the ADC Resolution.

[링크 : https://lucasteske.dev/2016/02/recording-noaa-apt-signals-with-gqrx-and-rtl-sdr-on-linux/]

decimation 혹은 다운샘플링이라고 한다.

[링크 : https://ko.wikipedia.org/wiki/다운샘플링]

저작자표시 (새창열림)

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Posted by 구차니

RTL-SDR NOAA 위성 수신하기 2차 시도도 반쪽 성공

아니 반쪽 실패인가?

NR-22L 안테나 들고 낑낑대면서 수신하는데

아래처럼 28분 부터 수신이 가능해지는데, 대역폭 조절하고 해도 신호는 약한지 뚜룻뚜룻 소리는 안들린다.

그래서 후다닥 번들 안테나로 시도해보는데 티가 크게 나진 않지만 조금 더 높게 떴을텐데도

오히려 신호가 더 약해지는 걸 보면.. 6dBi 증폭을 무시할 수 없는 듯?

32분 56초에 75.7도로 peak 인 것 같은데

대충 이런 각도로 들고 있어야 신호가 강하게 들어온다.

이제 멀어지는 시점인지 주파수가 낮아져서 후다닥 조절(36:50에 20도 이하로 떨어짐)

거의 수평으로 들어야 들어온다. 그런데 이러면 각도가 더 높아졌다고 봐야 하는거 아닌가? 도대체 머지?

먼가 뒤로 여백이 많다고 해야하나?

산뜻하게 나오긴 했는데 원래 이렇게 enhancement 해도 크게 달라지는게 없는건가?

저작자표시 (새창열림)

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sdr gps linux

$ sudo apt-cache search gnss
gnss-sdr - Global navigation satellite systems software defined receiver
rtklib - Real Time Kinematic and other advanced GPS positioning techniques
rtklib-qt - Tools for standard and precise positioning with GNSS QT interface

$ sudo apt-get install gnss-sdr
패키지 목록을 읽는 중입니다... 완료
의존성 트리를 만드는 중입니다
상태 정보를 읽는 중입니다... 완료
다음 패키지가 자동으로 설치되었지만 더 이상 필요하지 않습니다:
  libllvm11
'sudo apt autoremove'를 이용하여 제거하십시오.
다음의 추가 패키지가 설치될 것입니다 :
  libad9361-0 libgflags2.2 libgnuradio-iio1 libgnutls-openssl27
  libgoogle-glog0v5 libiio0 libmatio9 libpugixml1v5 libserialport0
다음 새 패키지를 설치할 것입니다:
  gnss-sdr libad9361-0 libgflags2.2 libgnuradio-iio1 libgnutls-openssl27
  libgoogle-glog0v5 libiio0 libmatio9 libpugixml1v5 libserialport0
0개 업그레이드, 10개 새로 설치, 0개 제거 및 0개 업그레이드 안 함.
5,619 k바이트 아카이브를 받아야 합니다.
이 작업 후 30.3 M바이트의 디스크 공간을 더 사용하게 됩니다.
계속 하시겠습니까? [Y/n]

[링크 : https://gnss-sdr.org/build-and-install/#gnulinux-distributions-based-on-debian]

저작자표시 (새창열림)

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rt1090 ubuntu rpi

dump1090 으로 받아보니 먼가 잡히긴 한데, 보는 법은 천천히 알아 봐야겠다.

./dump1090
Found 1 device(s):
0: Realtek, RTL2838UHIDIR, SN: 00000001 (currently selected)
Found Rafael Micro R820T tuner
Max available gain is: 49.60
Setting gain to: 49.60
Exact sample rate is: 2000000.052982 Hz
Gain reported by device: 49.60
*5d71be37f6cf59;
CRC: 000000 (ok)
DF 11: All Call Reply.
  Capability  : 5 (Level 2+3+4 (DF0,4,5,11,20,21,24,code7 - is airborne))
  ICAO Address: 71be37
  IID         : II-00

*5d71c012fe97cd;
CRC: 000000 (ok)
DF 11: All Call Reply.
  Capability  : 5 (Level 2+3+4 (DF0,4,5,11,20,21,24,code7 - is airborne))
  ICAO Address: 71c012
  IID         : II-00

*8d71c061603330bb9b2c5eb42c76;
CRC: 000000 (ok)
DF 17: ADS-B message.
  Capability     : 5 (Level 2+3+4 (DF0,4,5,11,20,21,24,code7 - is airborne))
  ICAO Address   : 71c061
  Extended Squitter  Type: 12
  Extended Squitter  Sub : 0
  Extended Squitter  Name: Airborne Position (Baro Altitude)
    F flag   : even
    T flag   : non-UTC
    Altitude : 9075 feet
    Latitude : 24013 (not decoded)
    Longitude: 76894 (not decoded)

*200008137ebca2;
CRC: 71be37 (ok)
DF 4: Surveillance, Altitude Reply.
  Flight Status  : Normal, Airborne
  DR             : 0
  UM             : 0
  Altitude       : 11875 feet
  ICAO Address   : 71be37

*8d71bf359914d410682c85de4b2a;
CRC: 000000 (ok)
DF 17: ADS-B message.
  Capability     : 5 (Level 2+3+4 (DF0,4,5,11,20,21,24,code7 - is airborne))
  ICAO Address   : 71bf35
  Extended Squitter  Type: 19
  Extended Squitter  Sub : 1
  Extended Squitter  Name: Airborne Velocity
    EW status         : Valid
    EW velocity       : -211
    NS status         : Valid
    NS velocity       : 130
    Vertical status   : Valid
    Vertical rate src : 0
    Vertical rate     : -640

*5fa77a7471b1d2;
CRC: 000000 (ok)
DF 11: All Call Reply.
  Capability  : 7 (Level 7 ???)
  ICAO Address: a77a74
  IID         : II-00

*02c1869c91fe4b;
CRC: 71bf35 (ok)
DF 0: Short Air-Air Surveillance.
  VS             : Airborne
  CC             : 1
  SL             : 6
  Altitude       : 9700 feet
  ICAO Address   : 71bf35

*5d71c2591e97d3;
CRC: 000000 (ok)
DF 11: All Call Reply.
  Capability  : 5 (Level 2+3+4 (DF0,4,5,11,20,21,24,code7 - is airborne))
  ICAO Address: 71c259
  IID         : II-00

*02a187177e2c4f;
CRC: a77a74 (ok)
DF 0: Short Air-Air Surveillance.
  VS             : Airborne
  CC             : 1
  SL             : 5
  Altitude       : 10375 feet
  ICAO Address   : a77a74

[링크 : https://www.reddit.com/r/RTLSDR/comments/lhs4ie/adsb_with_linux/]

[링크 : https://github.com/MalcolmRobb/dump1090]

[링크 : https://www.satsignal.eu/raspberry-pi/dump1090.html]

+

21.12.21

interactive 모드로 실행하면 rtl1090 실행했을때 table 처럼 나온다.

$ ./dump1090 --interactive
Hex     Mode  Sqwk  Flight   Alt    Spd  Hdg    Lat      Long   Sig  Msgs   Ti/
-------------------------------------------------------------------------------
71AA45  S     5044  HGG161T   3150                               21    19   -31995
71BF16  S     5053  KAL1236   3850  179  314                     24    26   -31856

[링크 : https://github.com/antirez/dump1090]

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rtl-sdr rpi 노이즈?

rpi 2b에 연결해서 tcp를 통해 테스크탑에서 들을때

똑같은 3.2MSPS 인데 왜 대역폭이 다르게 보이지?

아래는 데스크탑에 바로 연결해서 들을 때. 최대 주파수쪽이 먼가.. 다르다?

아래는 노트북. 같은 리눅스라 그런지 3.2MSPS로 설정하니 동일하게 나온다.

라즈베리 2B+ 에 연결했다고 해서 노이즈가 더 심하진 않다고 보면 되려나?

다만 방송에 따라서 조금 차이가 날 순 있겠지만 -40dB 정도로 나오는데

sdr# 에서는 -30dB 정도 나온걸 봐서는 처리하는 방식이나 표시하는 방식의 차이가 아닐까 조금 의심된다.

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구차니의 잡동사니 모음

'프로그램 사용'에 해당되는 글 2311건

ISS(국제우주정거장) 궤도

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gnu radio

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