Abstract
Starting from the generalized ambiguity function of bistatic SAR (BSAR), it is shown that 3-D point target estimation can be carried out in space-surface bistatic SAR (SS-BSAR). Appropriate analytical equations, based on maximum likelihood estimation (MLE), are derived and confirmed via computer simulation. Furthermore, the performance of the estimate using the Crammer-Rao bound is analyzed for the case in question, thus further revealing the possibility and potential of target 3-D position estimation. Setting the determinant maximum of the information matrix as the criterion, the optimal receiver position and multi-receiver configuration are analytically determined in the SS-BSAR system. Simulation results also validate the correctness of the analytical calculation.
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