【摘要】 以成像雷达设计为背景,结合对空间目标雷达观测视角变化率的分析,给出了空间目标轨道参数和系统脉冲重复频率(PRF)的相互关系,为解决雷达回波中的Doppler频率展宽问题提供系统设计参考。目标视角变化率的分析方法是根据空间目标的轨道根数和雷达站的布站位置,通过简化模型进而分析目标相对于雷达站视角变化率与轨道参数之间的关系,并采用卫星工具包(STK)软件和数值仿真方法分别验证了该方法的有效性。仿真结果表明了本文分析方法的有效性和实用性。相关结论可为空间监视雷达系统设计及雷达资源的合理配置提供理论依据。更多还原

【Abstract】 Relationships between the pulse repeat frequency(PRF) and the space orbit parameters for imaging radar are presented as a function of the radar aspect angle rate-of-change as a system design reference to solve the Doppler broadening problem in radar echoes. The method simplifies analyses based on space orbit elements and the radar station position.The effectiveness of the method is confirmed using the satellite tool kit(STK)and numerical simulations.The simulations demonstrate the effectiveness and practicality of the method.The conclusions provide a theoretical basis for reasonable designs of space target surveillance radar systems and radar resource configurations.更多还原