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分布式相參雷達(dá)LFM寬帶去斜參數(shù)估計(jì)方法

周寶亮

周寶亮. 分布式相參雷達(dá)LFM寬帶去斜參數(shù)估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2020, 42(7): 1566-1572. doi: 10.11999/JEIT190398
引用本文: 周寶亮. 分布式相參雷達(dá)LFM寬帶去斜參數(shù)估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2020, 42(7): 1566-1572. doi: 10.11999/JEIT190398
Baoliang ZHOU. Distributed Coherent Radar LFM Wideband Stretch Parameter Estimation Method[J]. Journal of Electronics & Information Technology, 2020, 42(7): 1566-1572. doi: 10.11999/JEIT190398
Citation: Baoliang ZHOU. Distributed Coherent Radar LFM Wideband Stretch Parameter Estimation Method[J]. Journal of Electronics & Information Technology, 2020, 42(7): 1566-1572. doi: 10.11999/JEIT190398

分布式相參雷達(dá)LFM寬帶去斜參數(shù)估計(jì)方法

doi: 10.11999/JEIT190398 cstr: 32379.14.JEIT190398

  • 北京無(wú)線電測(cè)量研究所 北京 100039

詳細(xì)信息
    作者簡(jiǎn)介:

    周寶亮：男，1985年生，高級(jí)工程師，研究方向?yàn)榉植际娇讖较鄥⒑铣衫走_(dá)技術(shù)

    通訊作者:

    周寶亮　zbluestc@126.com

  • 中圖分類號(hào): TN957

Distributed Coherent Radar LFM Wideband Stretch Parameter Estimation Method

  • Beijing Institute of Radio Measurement, Beijing 100039, China

  • 摘要:

    寬帶分布式相參雷達(dá)技術(shù)能夠有效提升目標(biāo)測(cè)量精度和識(shí)別性能，具有重要的研究?jī)r(jià)值。針對(duì)現(xiàn)有雷達(dá)裝備一般不具有同時(shí)對(duì)正負(fù)調(diào)頻率寬帶線性調(diào)頻信號(hào)進(jìn)行去斜處理的能力，即在接收相參合成階段無(wú)法通過(guò)正負(fù)調(diào)頻率寬帶去斜方式獲取寬帶信號(hào)發(fā)射相參所需延時(shí)相位值的問(wèn)題，該文利用單元雷達(dá)與目標(biāo)之間存在延時(shí)差，將單元雷達(dá)發(fā)射的寬帶線性調(diào)頻信號(hào)等效為目標(biāo)信號(hào)，對(duì)接收信號(hào)進(jìn)行互相關(guān)處理獲取發(fā)射相參合成所需的參數(shù)值，通過(guò)建模和仿真實(shí)現(xiàn)接收相參和發(fā)射相參合成處理，并對(duì)飛機(jī)目標(biāo)進(jìn)行1發(fā)2收相參探測(cè)試驗(yàn)，獲得了理想的試驗(yàn)結(jié)果。該方法具有估計(jì)精度高、運(yùn)算量小和時(shí)實(shí)性好的優(yōu)勢(shì)，可應(yīng)用于分布式相參雷達(dá)工程實(shí)現(xiàn)。

    Abstract:

    Wideband distributed coherent radar technology can effectively improve the target measurement accuracy and recognition performance, and has important research value. For the existing radar equipment generally does not have the ability to stretch the positive and negative frequency modulation rate wideband LFM signal simultaneously, that is the problem that the delay phase value of wideband signal transmit coherent can not be obtained by wideband stretch method in receive coherent synthesis phase. This article uses the delay difference between the unit radar and the target, equivalents the unit radar transmitting wideband LFM signal to the target signal, performs cross-correlation processing on the received signal to obtain the value of transmit coherent parameter. Through modeling and simulation receiving coherent and transmitting coherent synthesis processing are realized, and the two input single output coherent detection test of the aircraft target is carried out, and the ideal test results are obtained. The method has the advantages of high estimation accuracy, small calculation amount and good real-time performance, can be applied to distributed coherent radar engineering implementation.

    • HTML全文

  • 圖  1  分布式相參雷達(dá)1發(fā)多收模式

    圖  2  分布式相參雷達(dá)多發(fā)多收模式

    圖  3  單元雷達(dá)去斜結(jié)果

    圖  4  接收相參合成結(jié)果

    圖  5  互相關(guān)仿真結(jié)果

    圖  6  互相關(guān)仿真結(jié)果

    圖  7  發(fā)射信號(hào)相參合成結(jié)果

    圖  8  接收相參合成結(jié)果

    圖  9  相參合成信號(hào)幅度圖

    表  1  仿真參數(shù)

    仿真名稱數(shù)值
    雷達(dá)個(gè)數(shù)(部)2
    信號(hào)頻率X波段
    信號(hào)帶寬(GHz)2
    雷達(dá)1與目標(biāo)距離(m)4.6
    雷達(dá)2與目標(biāo)距離(m)10.5
    下載: 導(dǎo)出CSV
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  • 收稿日期:  2019-06-03
  • 修回日期:  2019-09-15
  • 網(wǎng)絡(luò)出版日期:  2020-02-01
  • 刊出日期:  2020-07-23

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