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.
Consulting (1), (2) and (4), we can find that the Doppler mapping
can be done by the following scale Fourier transform,
Color Doppler mapping
can help to identify the presence of an anomalous and tortuous vessel, usually near left kidney or spleen following to caudal vena cava.
For more accurate haemodynamic information and assistance, we found that using TOE Doppler velocity analysis, then monitoring with a real time colour Doppler mapping
provided a quick and precise diagnosis during anterior mediastinal tumour resection.