Earth-sensing satellite resources for radio astronomers:

SFCG resources for radio astronomers:

List of active satellite missions and links to resources

Discussion of power levels from these satellites

Some parameters of the TerraSar-X 9.6 GHz radar

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IUCAF's CloudSat (94.05 GHz radar) page

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Free downloads of useful information from ITU-R

ITU-R Report RA. 2188 Power flux-density and e.i.r.p. levels potentially damaging to radio astronomy receivers