I'm not OP, but I suspect it is weather sat imagery: you can use SDR to receive images captured by NOAAA weather satellites[1] 1. https://www.rtl-sdr.com/rtl-s

I'm not OP, but I suspect it is weather sat imagery: you can use SDR to receive images captured by NOAAA weather satellites[1] 1. https://www.rtl-sdr.com/rtl-sdr-tutorial-receiving-noaa-weather-satellite-images/ https://www.rtl-sdr.com/rtl-sdr-tutorial-receiving-noaa-weat...