Estimation of Velocity Moments of Radar Targets

The Doppler-velocity spectrum of a coherent burst of radar pulses after reflection from the wake of a reentry body is considered. Time-domain estimators of the mean-wake velocity and velocity spread in a particular range cell are given in terms of the echo of a coherent N-pulse burst. These formulas yield values equivalent to common frequency-domain estimators, but, for short bursts (N < 50), are computationally faster than their frequency-domain counterparts.     

Controlled Alteration of Wideband Radar Oata

A procedure is described for obtaining weights for a transversal filter which will degrade the range resolution and alter the sidelobe levels of the sampled version of a time envelope whose spectrum is band. limited and known. The two general cases of super-and sub-Nyquist rate sampling are discussed.