星载SAR系统参数设计过程自动化方法研究

针对星载合成孔径雷达（Synthetic Aperture Radar，SAR）系统参数设计过程中部分参数仍需手工选取，并且系统根据设计结果无法做出反应的问题。本文提出了一种星载SAR系统参数自动化设计的方法。首先，针对脉冲重复频率（Pulse Repetition Frequency，PRF）和波位位置等重要参数进行了优化选取设计。然后，利用比例?积分?微分（Proportion?Integral?Differential，PID）控制器对系统参数结果作自动化调节。仿真和实验结果表明，与传统的星载SAR系统参数设计方法相比，该方法具有便捷高效、易于实现的特点，提高了星载SAR系统设计过程中参数选取的自动化程度，实现了当系统技术指标的评测结果不满足用户要求时的参数自动调节。

Research on Automatic Method of Parameter Design Process of Spaceborne SAR System

Contraposing the problem that some parameters still need to be selected manually in the parameter design process of the spaceborne synthetic aperture radar(SAR) system parameters, and the system is unable to react according to the design results, a method for automatic design of the SAR system parameters is proposed in this paper. Firstly, the important parameters such as pulse repetition frequency(PRF) and beam position are optimally selected and designed. Then, the proportion?integral?differential(PID) controller is used to automate the adjustment of the system parameters. The simulation and experimental results show that this method is convenient, efficient and easy to implement compared with the traditional parameter design method of spaceborne SAR system. It improves the automation of parameter selection in the design process of spaceborne SAR system and enables automatic adjustment of the parameters when the evaluation results of the system technical indicators do not satisfy with the user requirements.