Research on the spacebased SAR cooperation detection model

A method is presented for improving the detection performance of the spacebased Synthetic Aperture Radar (SAR) system, in which the information is acquired by several SARs in a constellation observing the same area from different angles simultaneously, and then processed by the parallel distributed detection method. After studying the statistical characteristics of the ambiguity signal, with the impact of factors such as clutter, system noise and backscattering status considered, the individual spacebased SAR detection model is established, which shows that the detection performance depends on the observation angle. Based on the distributed detection theory, the Spacebased SAR Cooperation Detection (SSARCD) model is established, and the relationship between the detection performance and the parameters of the orbit, the platform and the SAR system is also determined, which benefits the design and realization of the cooperation detection system. Results from the contrast analysis prove that the detection performance of the SSARCD system is better than that of the individual spacebased SAR.