非合作式星载双站雷达波束同步设计

Beam Synchronization Design Strategies of Noncooperative Spaceborne Bistatic Radar

波束同步设计是星载分布式雷达系统总体设计的重要问题。针对发射卫星是非合作式的情况,给出六种可能的卫星姿态和天线指向参数方案。给出如下数学模型:针对一般编队,总结出波束指向同步的一般方法;提出一种基于波束指向同步的波束覆盖同步方法,并基于该方法,得到上述六种方案对应的波束覆盖同步方法;提出衡量姿态和天线指向控制能力要求的方法和覆盖能力模型,对六种可能的卫星姿态和天线指向方案,进行波束同步设计和波束覆盖能力仿真分析和比较,仿真结果验证了数学模型的正确性。

Satellite beam synchronization design strategy is key design issue of distributed spaceborne radar system design. In the case of noncooperative transmitter, the article presents six attitude and antenna pointing parameter strategies. Several mathematic methods and models are provided as follows. A general method of beam - pointing synchronization is summarized. Six methods of beam - pointing and overlap synchronization are provided, each corresponding to one of six attitude and antenna pointing strategies above. A approach of how to compute control ability of attitude and antenna pointing is presented. In order to compare with performance of six parameter strategies, a swath overlap ability model is put forward. Lastly, a simulation case is presented, in which attitude and antenna pointing angles and swath overlap abilities of six parameter strategies are compared with each other. The simulation results prove correctness and validity of design methods.