{"title":"Interference suppression in FMICW radar with staggered pulse repetition interval","authors":"Takayuki Inaba","doi":"10.1002/ecja.20326","DOIUrl":null,"url":null,"abstract":"<p>FMCW (frequency-modulated continuous wave) radar is a radar system which can achieve high resolution by relatively low signal processing load. The authors have reported on clutter suppression by FMICW (FM interrupted CW) radar, where the transmission/reception of FMCW radar in pulse waveform is switched in order to assure transmission/reception isolation and to suppress undesired waves from short distances. This paper proposes the FM staggered PRI system, in which the pulse repetition interval (PRI) is randomized for each pulse in order to suppress the interference when FMICW radars are congested within the search distance. The target-signal in the FM staggered PRI system is formulated. Conditions such as the average PRI and the possible range of staggering are derived from requirements such as the maximum search distance. The output <i>S/I</i> is statistically evaluated by computer simulation, with the average PRI, the pulse width, the number of interference waves, and the input <i>S/I</i> (signal-to-interference ratio) as variables. The effectiveness of the FM staggered PRI system is demonstrated. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 90(12): 86–100, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecja.20326</p>","PeriodicalId":100405,"journal":{"name":"Electronics and Communications in Japan (Part I: Communications)","volume":"90 12","pages":"86-100"},"PeriodicalIF":0.0000,"publicationDate":"2007-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ecja.20326","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electronics and Communications in Japan (Part I: Communications)","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ecja.20326","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
FMCW (frequency-modulated continuous wave) radar is a radar system which can achieve high resolution by relatively low signal processing load. The authors have reported on clutter suppression by FMICW (FM interrupted CW) radar, where the transmission/reception of FMCW radar in pulse waveform is switched in order to assure transmission/reception isolation and to suppress undesired waves from short distances. This paper proposes the FM staggered PRI system, in which the pulse repetition interval (PRI) is randomized for each pulse in order to suppress the interference when FMICW radars are congested within the search distance. The target-signal in the FM staggered PRI system is formulated. Conditions such as the average PRI and the possible range of staggering are derived from requirements such as the maximum search distance. The output S/I is statistically evaluated by computer simulation, with the average PRI, the pulse width, the number of interference waves, and the input S/I (signal-to-interference ratio) as variables. The effectiveness of the FM staggered PRI system is demonstrated. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 90(12): 86–100, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecja.20326
交错脉冲重复间隔FMICW雷达的干扰抑制
FMCW(调频连续波)雷达是一种以较低的信号处理负荷实现高分辨率的雷达系统。作者报道了FMICW(调频中断连续波)雷达抑制杂波的方法，该方法将脉冲波形中的FMICW雷达的发射/接收进行切换，以保证发射/接收隔离，并抑制短距离的非期望波。为了抑制FMICW雷达在搜索距离内出现拥塞时的干扰，提出了调频交错PRI系统，该系统随机化每个脉冲的脉冲重复间隔(PRI)。给出了调频交错PRI系统中的目标信号。诸如平均PRI和可能的交错范围之类的条件是从诸如最大搜索距离之类的需求中导出的。以平均PRI、脉冲宽度、干扰波数和输入S/I(信干扰比)为变量，通过计算机模拟对输出S/I进行统计评估。验证了FM交错PRI系统的有效性。©2007 Wiley期刊公司电子工程学报，2009,29 (3):391 - 391;在线发表于Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002 / ecja.20326
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