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.
Other partners include Surrey Satellite Technology, which will provide the Delay Doppler Mapping Instrument, and the NASA Ames Research Center, which will provide the Deployment Module.