https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.8 2026-04-29T10:52:37.449Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/625da982-3648-43fc-a640-1b230509944e RADAR BACKSCATTER Date=2020-09-29 User Id=tstevens Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=RADAR BACKSCATTER [625da982-3648-43fc-a640-1b230509944e,86025] - COMMON MIDPOINT GATHER [d8b34f6e-0713-45ae-b0c7-23329b0b8f0b,560729] The (microwave) signal reflected by elements of an illuminated scene back in the direction of the radar. It is so named to make clear the difference between energy scattered in arbitrary directions, and that which returns to the radar and thus may be received and recorded by the sensor. 2020-09-29 13:28:38.0