Cramer-Rao Bounds and TX-RX Selection in a Multistatic Radar Scenario
AIR FORCE RESEARCH LAB HANSCOM AFB MA SENSORS DIRECTORATE
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Multistatic radars utilize multiple transmitter and receiver sites to provide several different monostatic and bistatic channels of observation. Multistatic passive and active systems can offer many advantages in terms of coverage and accuracy in the estimation of target signal parameters but unfortunately their performances are heavily sensitive to the position of receivers RX and transmitters TX with respect to the target trajectory. As known, geometry factors play an important role in the shape of the ambiguity function AF which is often used to measure the possible global resolution and large error properties of the target parameters estimates. Exploiting the relation between the ambiguity function and the Cramer-Rao lower bound CRLB, in this work we propose an algorithm for choosing in a multistatic scenario, along the trajectory of the tracked target, the pair TX-RX with the best asymptotic performance calculated in terms of CRLB on estimation accuracy.
- Active and Passive Radar Detection and Equipment