优化阵列在寄生式星载SAR系统抗干扰中的应用

Application of Coarray for Anti-jamming in Parasitic Spaceborne SAR System

针对寄生式星载SAR系统抗干扰时编队构形的限制,研究了优化阵列在超稀疏构形抗干扰中的应用。使用优化阵列确定编队小卫星的相对位置,可以提高方向分辨率,减小达到相同波束形成性能所需要的孔径长度,减小所需小卫星数目,降低硬件开销。仿真证明,优化阵列可以使寄生式星载SAR系统获得良好抗干扰性能。

Based on the limitation of formation of parasitic spaceborne SAR system, this paper studies application of coarray in anti-jamming technique for ultra sparse arrays. Using positions of small satellites provided by coarray, resolution of direction can be improved, num of satellites required to attain expected beamforming performance as well as cost of hardware can be reduced. Simulation results show anti-jamming good performance of parasitic spaceborne SAR system with coarray.