遗传算法在扫描SAR波位设计中的应用
Applying Genetic Algorithm to Beam Position Design of ScanSAR
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摘要: 该文提出了用遗传算法计算天线相位加权的方法,实现了天线方向图展宽赋形,以满足星载SAR观测带的要求。另外,对天线方向图展宽赋形进行了仿真,然后根据展宽的方向图、扫描SAR系统参数和轨道参数,对距离和方位模糊度、系统灵敏度等指标进行了计算,给出了仿真计算结果;由这些指标,设计出了波位。仿真表明:在天线方向图展宽赋形中,用遗传算法计算天线相位加权的方法是可行的。Abstract: In this paper, phase weighting method using genetic algorithm is presented in order to make pattern broaden, satisfying the need of swath. In addition, the broadened pattern is simulated. According to the broadened pattern, the SAR system parameter and the orbit parameter, the range and azimuth ambiguity levels and the system sensitivity are calculated and the results are given. Based on these results, beam positions are devised. The simulation results show that phase weighting method using genetic algorithm is feasible.
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