delay Doppler mapping

delay Doppler mapping

[di′lā ′däp·lər ‚map·iŋ]
(mapping)
Mapping of a planet by illuminating it with a radar beam and measuring the Doppler shift caused by rotation of the planet.
References in periodicals archive ?
The primary instrument on board CYGNSS - a mission whose price tag is estimated at just $162 million - is the Delay Doppler Mapping Instrument, which will use a GPS receiver and antennas to provide high-resolution imagery of the birth, evolution and hard-to-predict intensification of tropical cyclones.
Each observatory contains a delay Doppler mapping instrument (DDMI) that consists of a multichannel GNSS-R receiver, a low-gain zenith antenna for reception of the direct signals, and two high-gain nadir antennas for reception of the surface scattered signals (Rose et al.