CFAR Detection in a Passive Coherent Location System Using FM Signals

IF 0.7 4区计算机科学 Q4 AUTOMATION & CONTROL SYSTEMS

Modeling Identification and Control Pub Date : 2017-01-01 DOI:10.2316/P.2017.848-045

Dong-Gyu Kim, Geun-Ho Park, Ho Jae Kim, Jin-O Park, Wonjin Lee, Jae-Heon Ko, Hyoung-Nam Kim

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引用次数: 0

Abstract

Recently, interest in a passive coherent location (PCL) system using commercial broadcasting signals has been increased since it exploits the existing broadcasting facilities without revealing the receiver’s location. To estimate positions of multiple targets by using the PCL system, constant false alarm rate (CFAR) detection, whose input is the samples of the range-Doppler map, has to be preceded, so that the parameters of the CFAR detector are influenced by the range-Doppler map. However, the characteristics of the range-Doppler map vary with bandwidth of the used broadcasting signals and its collection time. Therefore, algorithm parameters for the CFAR detector have to be properly determined considering those characteristics. To achieve this goal, we analyze the range-Doppler map in a PCL system using commercial FM broadcasting signals and then derive mathematical descriptions for the algorithm parameters of the number of window cells and that of guard cells. We also present which axis out of the range and the Doppler axes is better for CFAR detection.

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基于调频信号的无源相干定位系统中的CFAR检测

最近，人们对使用商业广播信号的无源相干定位(PCL)系统越来越感兴趣，因为它利用现有的广播设施而不透露接收器的位置。为了利用PCL系统估计多个目标的位置，必须先进行恒虚警率(CFAR)检测，其输入是距离-多普勒图的样本，因此CFAR检测器的参数会受到距离-多普勒图的影响。然而，距离-多普勒图的特性随所用广播信号的带宽和采集时间而变化。因此，CFAR检测器的算法参数必须考虑到这些特性来确定。为了实现这一目标，我们分析了利用商业调频广播信号的PCL系统的距离-多普勒图，然后推导了窗口单元数和保护单元数的算法参数的数学描述。我们还提出了哪些轴超出了范围和多普勒轴更适合CFAR检测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Modeling Identification and Control 工程技术-计算机：控制论

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The aim of MIC is to present Nordic research activities in the field of modeling, identification and control to the international scientific community. Historically, the articles published in MIC presented the results of research carried out in Norway, or sponsored primarily by a Norwegian institution. Since 2009 the journal also accepts papers from the other Nordic countries.