SPACE-TIME PROCESSING OF BROAD-BAND SIGNALS REFLECTED FROM MOVING TARGETS IN COHERENT MULTIPOSITION MEASURING SYSTEMS

The optimum space-time processing of broadband signals reflected from moving targets in coherent multiposition measuring systems for finding targets not only in the far zone but also in the Fresnel zone of the system is considered. The possibility of using information on the tran sformation of the time scales of the signal envelopes to increase the resolution and the accuracy with which the coordinates and parameters of motion of the targets can be estimated is analyzed. The new analyti cal results contain, as special cases, the well-known relations defini ng the resolution and accuracy characteristics of the estimated parame ters in the system when not only narrow-band but also broadband signal s are used.