Ica For Sar-based Anti-jamming Technology Research

Synthetic Aperture Radar (SAR) is an active microwave imaging radar. It can get ground images of wide region by all weather, all time, and real time. It has good penetrability of vegetation and ground, and is widely applied in the military and civil affairs, therefore, its action becomes increasingly important. It is an issue how to improve the anti-jamming ability of the SAR in the radar signal processing. In this dissertation, SAR signal processing and Independent Component Analysis theory are analyzed and studied. Independent Component Analysis theory is applied to the anti-jamming technique of SAR, which can improve the ability of anti-jamming of SAR.The main contents of this dissertation are as follows:1. The development actuality and history of the anti-jamming technique of SAR is introduced.2. The basic SAR principle is discussed, including SAR imaging geometry relationship, the echo data model of strip SAR, the echo signal analysis and imaging arithmetic.3. Some elementary concepts of Independent Component Analysis are introduced and its general processing process and typical arithmetic are discussed.4. Anti-jamming techniques of SAR are classified and anti-jamming measures are introduced in the dissertation. The merits and demerits of SAR in anti-jamming are discussed. Based on its characteristic, its basic train of thought in research of anti-jamming methods is analyzed.5. Gauss noise jamming is studied on anti-jamming in the process of SAR imaging processing and in the image field with Independent Component Analysis method respectively, the results from emulational experiment indicate that this method is feasible.