Cramer-Rao Lower Bound assessment when using bistatic clutter mitigation techniques

摘要

This paper describes a new method to compare the effectiveness of bistatic clutter mitigation techniques. A combination of a high-fidelity simulation and Cramer-Rao Lower Bounds (CRLBs) is used to determine angle, velocity, and range estimation accuracies. This approach allows the assessment of bistatic clutter mitigation techniques over a wide area in a computationally efficient manner, rather than at a restricted number of specific locations. It enables the development of a trade space analysis; i.e., parameters of the bistatic configuration are varied and the effectiveness of the techniques compared. Estimation accuracies are evaluated herein for a specific configuration in which bistatic and conventional space time adaptive processing (STAP) is applied. Then, the bistatic angle of the configuration is varied and the effectiveness of the STAP techniques compared.