基于遗传算法的星载合成孔径雷达天线方向图与模糊综合
Antenna Pattern Synthesis for Ambiguity Depressing in Spaceborne SAR Systems Based on Genetic Algorithms
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摘要: 该文针对改善星载合成孔径雷达(星载SAR)的模糊特性，以星载SAR的模糊度为目标函数，以天线方向图的主瓣宽度和副瓣电平为约束条件，应用遗传算法对天线方向图进行综合。仿真结果表明，这种方法很好地抑制了模糊度，同时控制了主瓣宽度和副瓣电平，对星载SAR系统设计具有实际意义。
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关键词:
- 星载合成孔径雷达;天线方向图综合;模糊
Abstract: In this paper Genetic Algorithms(GA) are applied to antenna pattern synthesis according to ambiguity depressing in spaceborne SAR. The ambiguity of spaceborne SAR is regarded as the objective function, and the beamwidth and the side lobe level of the antenna pattern are regarded as the constraints. The simulation results show that the ambiguity is depressed while the beamwidth and the side lobe level are well controlled via this method, which is quite helpful to spaceborne SAR system designing. -
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