针对复杂双基几何和轨道差异大等特性给高低轨双基地SAR构型设计带来的挑战,文中利用高低轨双基地SAR的几何关系,构建双基构型参数与成像性能间的数学模型,并建立了非线性多元的目标函数,将构型参数设计过程转化成非线性多元目标函数的优化问题,利用模拟退火算法进行求解。最后,通过仿真实验验证了该方法的有效性。

Due to complex bistatic geometry and big differences of orbital characteristics, the configuration design of GEO-LEO BiSAR remains a challenge. To address the issue, mathematic models between these indicators related to the configuration parameters and the imaging performance are firstly derived based on the geometry analysis. Then, a general nonlinear multivariate equation is constructed based on desired imaging performance. Thus, the configuration design procedure is transformed to solve the nonlinear multivariate function. A new optimal method is presented based on simulated annealing (SA) algorithm. Finally, the simulation results verify the correctness of the presented method.

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