基于AR模型逼近的AMTI滤波器设计方法  

AR model approaching-based method for AMTI filter design

作　　者：向洋[1] 马晓岩[1] 

机构地区：[1]空军雷达学院信息工程系,湖北武汉430019

出　　处：《系统工程与电子技术》2005年第11期1826-1829,共4页Systems Engineering and Electronics

基　　金：省级重点项目资助课题(KJ03136)

摘　　要：提出了一种新的雷达自适应动目标显示(AMTI)设计方法。该方法利用AR模型逼近杂波谱“倒置”理想带通滤波器的频率响应,实现了最优FIR滤波器的设计。由于被逼近的“倒置”理想带通滤波器的中心频率和通带宽度可随杂波功率谱的变化适时调整,使AMTI滤波器的杂波抑制性能与经典自适应方法相比得到有效提高。雷达实际采集数据的对比实验结果表明该方法设计出的AMTI滤波器的优越性和实用性。A new method for radar adaptive moving target indication （AMTI） filter design is proposed . The method utilizes an AR model to approach the frequency response of the clutter spectrum “inverted” ideal band-pass filter, and then implements the design of optimal FIR filter. Since the central frequency and pass band width of the “inverted” ideal filter can be timely adjusted according to the changes of the clutter spectrum, the clutter suppression perforrnance of the proposed AMTI filter is improved efficiently in comparison with several adaptive methods. Results of comparative experiment based on the real radar clutter demonstrate the superiority and validity of the newly designed AMTI filter.

关 键 词：AR模型 自适应动目标显示 杂波抑制 

分 类 号：TN957[电子电信—信号与信息处理]