2 ms·
To get a Doppler-shifted reflection you can also... move. Ground-based surface radars can work (somehow) with just no Doppler info, cataloguing, mapping fixed r
by touisteur 2y ago
To get a Doppler-shifted reflection you can also... move. Ground-based surface radars can work (somehow) with just no Doppler info, cataloguing, mapping fixed reflectors and very often just building ground maps. If your radar has multiple vertically and horizontally spaced receptors (eg. phased-array) or you can aim your beams, you can also somehow build a 3D map or at least map surface features/masks. This is before anything moves.
- nomel 2y ago> Ground-based surface radars can work (somehow) with just no Doppler info > you can also somehow build a 3D map or at least map surface features/masks The problem is this case was that there was nothing to reflect off of, except for a planar field of sand. You can't know how fast you're moving over a bare plane, without a feature being on that plane, that you can observe.