基于TBD方法的弱小目标预警研究  

Early Detection of Small Targets Based on Track-before-detection Method

作　　者：邓晓波[1] 皮亦鸣[1] 曹正林 付合山[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054 [2]中航雷达与电子设备研究院科技发展部,江苏无锡214063

出　　处：《现代雷达》2009年第12期57-61,共5页Modern Radar

基　　金：国家863计划项目资助(2007AA12Z159);国家自然科学基金项目(60772143)

摘　　要：运用了检测前跟踪(TBD)方法对多普勒警戒雷达中的弱小目标早期预警问题进行了研究。根据入侵目标的轨迹特点,分析了它在距离-多普勒平面中的转移规律,设计了新的建立在距离-多普勒域上的基于V iterb i搜索算法的帧间能量积累方法。最后,比较了该方法与传统的先检测后跟踪方法的检测性能,并给出了TBD方法的理论检测性能。This paper presents use of track.before-detection （TBD） method for early detection of approaching targets for pulse-Doppler surveillance radars. Upon a careful study of the character of an approaching target trajectory, the law of admissible target transition between successive range-Doppler planes is analyzed. A modified Viterbi algorithm is designed to integrate energy in the range-Doppler domain. The detection performance of the proposed approach is analyzed and compared with the traditional track-after-detection （TAD） method. Moreover, the theoretical detection performance of TBD is also provided.

关 键 词：预警 检测前跟踪 弱小目标 

分 类 号：TN953[电子电信—信号与信息处理]