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You can use data from the Suomi National Polar-orbiting Partnership, but it is quite recent (since 2012). e.g ftp://ftp-npp.class.ngdc.noaa.gov/20150611/VIIRS-SDR/VIIRS-Day-Night-Band-SDR/ For longer time series, you can use NOAA DMSP datasets (1992-2013)


One short comments regarding your other questions: Why is azimuth resolution worse than range resolution in Sentinel1 (SAR) You are absolutely right that sentinel TOPS have a worse azimuth resolution comparing with other data. This exactly the unique characteristic of TOPS. The working mode of TOPS (also including ScanSAR) is designed to sacrifice azimuth ...

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