Mars mapping with delay-Doppler radar

Planetary delay-Doppler radar and the long-code method

Delay-Doppler mapping continues to be the most widely used imaging technique in radar astronomy. Various methods have been devised to partition echoes in delay-Doppler space for different degrees of echo dispersion (as quantified by the overspreading factor ). These include the standard interpulse/intercode methods for underspread ( ) or slightly overspread ( ) echoes, intrapulse methods for gr...

A General Sequential Delay-Doppler Estimation Scheme for Sub-Nyquist Pulse-Doppler Radar

Sequential estimation of the delay and Doppler parameters for sub-Nyquist radars by analog-to-information conversion (AIC) systems has received wide attention recently. However, the estimation methods reported are AIC-dependent and have poor performance for off-grid targets. This paper develops a general estimation scheme in the sense that it is applicable to all AICs regardless whether the tar...

Doppler Radar Observations

Wind observations with Doppler weather radar

Introduction Weather radars are commonly employed for detection and ranging of precipitation, but radars with Doppler capability can also provide detailed information on the wind associated with (severe) weather phenomena. The Royal Netherlands Meteorological Institute (KNMI) operates two identical C-band (5.6 Ghz) Doppler weather radars. One radar is located in De Bilt and the other one is loc...

Doppler Radar Observations