摘要
发射、接收天线配置方式不同的系统的分辨特性和参数的约束条件是对双基地合成孔径雷达(Bistatic SAR)系统进行分析和设计的基础。根据收、发载机平台的运动特点和天线波束在观测场景平面内的照射规律,采用多普勒频率分析方法详细讨论了斜侧视的条带测绘机载双基地SAR系统的方位向分辨特性,并给出了收、发平台位于观测场景两侧时避免测绘带内有用回波信号本身产生混叠的条件。最后通过仿真验证了该结论。
The calculation of resolution and the evaluation of parameter requirements for bistatie system are quite different from monostatic case. Through analyzing the doppler history of echo signal, this paper analyzes the azimuth resolution characteristics based on platform motion features and antenna radiation rules. It also analyzes the range ambiguity in echo signal caused by ill geometric configuration of transmitter and recelver when airplane platforms fly on the opposite side of mapping swath, and presents the requirements to avoid this ambiguity. Finally, the simulation results are given.
出处
《雷达科学与技术》
2006年第1期22-26,共5页
Radar Science and Technology
基金
总装备部预研基金资助项目(No.51407020103DZ0242)
