无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2014年
7期
23-27
,共5页
匹配滤波器%检测前跟踪%贝叶斯理论%概率模型
匹配濾波器%檢測前跟蹤%貝葉斯理論%概率模型
필배려파기%검측전근종%패협사이론%개솔모형
matched filter%track-before-detect%Bayesian theory%probability model
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。
為瞭改善貝葉斯檢測前跟蹤算法的性能，分析瞭匹配濾波器時頻域特性對貝葉斯檢測前跟蹤算法性能的影響，併給齣瞭利用匹配濾波器時頻域特性的貝葉斯檢測前跟蹤算法的處理流程。詳細分析瞭觀測信號的產生機理，根據匹配濾波器時頻域特性建立閤適的觀測模型，利用匹配濾波器時頻域特性計算觀測似然函數，從而避免由于觀測模型和似然函數失配所帶來的損失。計算機倣真實驗錶明，攷慮匹配濾波器的時頻域特性，能夠減小由于目標觀測模型失配所引起的性能損失，改善貝葉斯檢測前跟蹤算法的性能。
위료개선패협사검측전근종산법적성능，분석료필배려파기시빈역특성대패협사검측전근종산법성능적영향，병급출료이용필배려파기시빈역특성적패협사검측전근종산법적처리류정。상세분석료관측신호적산생궤리，근거필배려파기시빈역특성건립합괄적관측모형，이용필배려파기시빈역특성계산관측사연함수，종이피면유우관측모형화사연함수실배소대래적손실。계산궤방진실험표명，고필필배려파기적시빈역특성，능구감소유우목표관측모형실배소인기적성능손실，개선패협사검측전근종산법적성능。
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.
