SMOG-1 pocket satellite reception how to


You can find all the Windows, Linux, Raspberry Pi based receiver software package here:
https://gnd.bme.hu:8080/

So far the “best guess” for the Kepler element data is here:
https://www.celestrak.com/NORAD/elements/tle-new.txt

hint: for smogcli program you need to add -i 47939 ID for reception. Stay tuned for updated TLE elements, hope NORAD can do the radar measurements and fine tune the Kepler database.

2021-022H
Update 2021-02-28: 2021-022M TLE the best based on Peters doppler research:
   https://twitter.com/ha5cqa/status/1375377324842098689/

Example from my RPi3 based receiver, with LNA4ALL and 7 element fixed Yagi:

pi@raspberrypi:~/smogcli2/build $ ./smog1_rtl_rx -k -n -g 10 -p -1 -e -20 -i 47939
INFO: downloading TLE from http://www.celestrak.com/NORAD/elements/tle-new.txt
INFO: TLE (tle-new.txt) downloaded successfully, saved as tle.txt
INFO: TLE and QTH files loaded
INFO: found TLE data for 2021-022H (47939)
INFO: TLE age is 0.524506 days
INFO: dongle buffer size: 4194304, file buffer size: 4194304
INFO: found 1 device(s):
0: Realtek RTL2838UHIDIR, SN: 00000001
INFO: using device 0: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
[R82XX] PLL not locked!
INFO: setting dongle sample rate to 1600000
INFO: setting fixed gain 87
INFO: disabled bias-T on GPIO PIN 0
INFO: setting dongle center frequency to 437.290 MHz
INFO: setting dongle ppm correction to -1
INFO: real center frequency is 437290000.0 Hz
INFO: starting dongle thread with 4194304 bytes of buffer
INFO: 2021-022H azimuth: 258.0, elevation: -26.3, doppler: 5357 Hz
INFO: signal amplitude maximum: 0.03190, average: 0.00598, total overruns: 0
INFO: 2021-022H azimuth: 258.0, elevation: -26.3, doppler: 5355 Hz
INFO: signal amplitude maximum: 0.03125, average: 0.00596, total overruns: 0
INFO: 2021-022H azimuth: 258.1, elevation: -26.2, doppler: 5352 Hz
INFO: signal amplitude maximum: 0.03190, average: 0.00594, total overruns: 0
INFO: 2021-022H azimuth: 258.1, elevation: -26.2, doppler: 5350 Hz
INFO: signal amplitude maximum: 0.03185, average: 0.00594, total overruns: 0
INFO: 2021-022H azimuth: 258.2, elevation: -26.2, doppler: 5347 Hz
INFO: signal amplitude maximum: 0.03581, average: 0.00595, total overruns: 0
INFO: 2021-022H azimuth: 258.3, elevation: -26.2, doppler: 5345 Hz
INFO: signal amplitude maximum: 0.03185, average: 0.00594, total overruns: 0
INFO: 2021-022H azimuth: 258.3, elevation: -26.1, doppler: 5342 Hz


Update1: very nice, strong SNR reception with my fixed 7 element Carant Yagi today:


RTL-SDR Blog article about SMOG-1:

SMOG-1 Teams video of first command: