正交模式分布式小卫星雷达杂波抑制性能研究  

Study on clutter suppression performance of distributed aperture radar using orthogonal waveforms

作　　者：伍勇[1] 汤俊[1] 彭应宁[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《系统工程与电子技术》2009年第7期1529-1533,共5页Systems Engineering and Electronics

基　　金：国家自然科学基金资助课题(60602048)

摘　　要：为了分析和比较正交模式和传统相控阵模式下分布式小卫星雷达的杂波抑制能力,建立了各卫星平台发射正交波形的信号模型,考察了码分正交、频分正交和相控阵模式下分布式小卫星雷达的杂波抑制性能,并给出了其性能限。研究表明,频分正交模式可有效增加系统自由度,减少稀疏采样区,故其杂波抑制性能明显优于码分正交和传统相控阵模式。计算机仿真验证了分析的正确性。To exploit and compare the clutter suppression performance of the distributed aperture raoar operating in orthogonal mode and phased array mode, the signal model of transmitting orthogonal waveforms is established. The clutter suppression performances for code diversity, frequency diversity and phased array transmitter are investigated, and the performance limit is given. It is demonstrated that the frequency diversity could increase the system degree of freedom and eliminate the sparse sampling effectively. Therefore, its performance is much superior to its code diverse and phased array counterpart. The simulations verify the conclusions.

关 键 词：分布式小卫星雷达 稀疏阵 频分正交 空-时二维自适应处理 

分 类 号：TN958.92[电子电信—信号与信息处理]