https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.7 2026-04-15T10:53:30.610Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/d3b7c3c0-e644-4f01-94da-dfebe854c0d1 RADAR Date=2013-01-16 User Id=saritz Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=RADAR [d3b7c3c0-e644-4f01-94da-dfebe854c0d1,62059] - Spectrum Width [bf1c1225-c3de-4c37-92bb-7a9e9e06c030,82073] Date=2024-07-24 User Id=mmorahan Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=RADAR [d3b7c3c0-e644-4f01-94da-dfebe854c0d1,1735966] - STOKES PARAMETER [dd515127-58a3-4636-8a17-6dde6372a6ac,1739234] Date=2013-01-16 User Id=saritz Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=RADAR [d3b7c3c0-e644-4f01-94da-dfebe854c0d1,62059] - MEAN RADIAL VELOCITY [bb20786b-2499-40b0-a9a5-2cc64421a6d2,82081] Date=2020-02-25 User Id=sritz Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=RADAR [d3b7c3c0-e644-4f01-94da-dfebe854c0d1,84015] - RADIAL VELOCITY [829e91f4-f351-4012-bb0a-208302fb11c2,559829] Date=2013-01-16 User Id=saritz Entity=NarrowerRelation Operation=DELETE User Note=Remove Concepts System Note=delete narrower relation Old Value=RADAR [d3b7c3c0-e644-4f01-94da-dfebe854c0d1,62059] - Spectrum Width [bf1c1225-c3de-4c37-92bb-7a9e9e06c030,82073] Date=2013-01-16 User Id=saritz Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=RADAR [d3b7c3c0-e644-4f01-94da-dfebe854c0d1,62059] - SPECTRUM WIDTH [41a7f02b-5ab6-4c1e-8583-abb870507ea1,82077] An acronym for <I>radio detection and ranging</I>, radar uses radio waves (microwave portion of the spectrum) to detect the presence of objects and determine their range (position). 2024-07-24 14:00:09.0