匹配滤波器对检测前跟踪性能的影响  

Impact of Matched Filter on Performance of Track-before-detect

作　　者：钟军涛[1] 夏双志[1] 李记辛[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2014年第7期23-27,共5页Radio Engineering

基　　金：国家高技术研究发展计划("863"计划)资助项目(2013AA122101)

摘　　要：为了改善贝叶斯检测前跟踪算法的性能,分析了匹配滤波器时频域特性对贝叶斯检测前跟踪算法性能的影响,并给出了利用匹配滤波器时频域特性的贝叶斯检测前跟踪算法的处理流程。详细分析了观测信号的产生机理,根据匹配滤波器时频域特性建立合适的观测模型,利用匹配滤波器时频域特性计算观测似然函数,从而避免由于观测模型和似然函数失配所带来的损失。计算机仿真实验表明,考虑匹配滤波器的时频域特性,能够减小由于目标观测模型失配所引起的性能损失,改善贝叶斯检测前跟踪算法的性能。In order to improve the performance of track-before-detect based on Bayesian theory,this paper analyzes the impact of time and frequency domain response of matched filter on the performance of track-before-detect based on Bayesian theory,and gives a detailed process flow of track-before-detect based on Bayesian theory that uses time and frequency domain response of matched filter.It analyzes in detail the mechanism of observed signal and establishes appropriate observation model based on time and frequency domain response of matched filter,which avoids the performance loss of track-before-detect based on Bayesian theory resulted from the mismatch of observation model.The computer simulation shows that the performance loss of track-before-detect based on Bayesian theory can be avoided by using time and frequency domain response of matched filter.

关 键 词：匹配滤波器 检测前跟踪 贝叶斯理论 概率模型 

分 类 号：TN957.51[电子电信—信号与信息处理]