摘要
在分析线性调频连续波Dechirp成像处理的基础上,设计用于小型无人机平台的小型合成孔径雷达系统。针对调频连续波体制,通过俯仰向宽波束照射及重心自稳定方法省去伺服系统,减小系统的体积和重量;在接收时通过自混频方法进行去调频处理,降低对后端采样系统的要求,简化后续的成像处理;通过数字化信号产生及预失真校正方法提高系统信号性能,保证高分辨成像的要求。试验证明该方案有效、可行,易于工程实现。
A miniature synthetic aperture radar （Mini-SAR） system for miniature unmanned aerial vehicle is designed based on analyzing of linear frequency modulation continuous wave （LFM-CM） Dechirp imaging processing. Size and weight of the system are reduced by adopting wide beam in elevation profile and eliminating servo system through centroid auto-stabilization. Request to sampling system at the back-end is reduced through dechirp process- ing by using of self-mixing at receiver to simplify succeeding imaging processing. Signal performance of the system is improved through digital signal generation and pre-distortion correction, and high resolution imaging can be achieved. Test results verified that the scheme is effective, feasible and easy for engineering implementation.
出处
《火控雷达技术》
2012年第1期1-5,共5页
Fire Control Radar Technology
