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雷達(dá)間歇輻射對(duì)測(cè)向交叉定位性能的影響分析

王亞濤 曾小東 周龍建

王亞濤, 曾小東, 周龍建. 雷達(dá)間歇輻射對(duì)測(cè)向交叉定位性能的影響分析[J]. 電子與信息學(xué)報(bào), 2020, 42(2): 452-457. doi: 10.11999/JEIT190110
引用本文: 王亞濤, 曾小東, 周龍建. 雷達(dá)間歇輻射對(duì)測(cè)向交叉定位性能的影響分析[J]. 電子與信息學(xué)報(bào), 2020, 42(2): 452-457. doi: 10.11999/JEIT190110
Yatao WANG, Xiaodong ZENG, Longjian ZHOU. Analysis for Effect of Radar Intermittent Radiation on the Performance of Cross Location[J]. Journal of Electronics & Information Technology, 2020, 42(2): 452-457. doi: 10.11999/JEIT190110
Citation: Yatao WANG, Xiaodong ZENG, Longjian ZHOU. Analysis for Effect of Radar Intermittent Radiation on the Performance of Cross Location[J]. Journal of Electronics & Information Technology, 2020, 42(2): 452-457. doi: 10.11999/JEIT190110

雷達(dá)間歇輻射對(duì)測(cè)向交叉定位性能的影響分析

doi: 10.11999/JEIT190110
詳細(xì)信息
    作者簡(jiǎn)介:

    王亞濤:男,1981年生,碩士,高級(jí)工程師,研究方向?yàn)殡娮觽刹?、射頻隱身

    曾小東:男,1985年生,碩士,工程師,研究方向?yàn)樾盘?hào)處理、射頻隱身

    周龍建:男,1988年生,博士,工程師,研究方向?yàn)橛?jì)算電磁學(xué)、雷達(dá)隱身、射頻隱身

    通訊作者:

    王亞濤 76566628@qq.com

  • 中圖分類(lèi)號(hào): TN974

Analysis for Effect of Radar Intermittent Radiation on the Performance of Cross Location

  • 摘要:

    針對(duì)雷達(dá)采取間歇輻射的射頻隱身管控措施,以雙站測(cè)向交叉定位為例,該文研究了輻射時(shí)間比與定位性能的影響關(guān)系。首先分析了雷達(dá)間歇輻射的管控方法,然后在載機(jī)做勻速直線運(yùn)動(dòng)的假設(shè)下,采用克拉美羅下界(CRLB)方法,建立了輻射時(shí)間比對(duì)定位精度的影響模型。最后給出了模型的求解步驟并進(jìn)行了仿真驗(yàn)證。仿真結(jié)果表明,不同輻射時(shí)間比對(duì)定位性能的影響不同,在初始距離為100 km,輻射時(shí)間比小于0.5時(shí),定位收斂時(shí)間超過(guò)10 s,可以有效降低測(cè)向交叉定位的性能。

  • 圖  1  間歇輻射特征變化情形

    圖  2  觀測(cè)站、目標(biāo)的位置關(guān)系

    圖  3  仿真場(chǎng)景

    圖  4  不同時(shí)隙寬度對(duì)定位誤差影響

    圖  5  不同時(shí)隙重復(fù)周期對(duì)定位誤差影響

    圖  6  不同初始距離對(duì)定位誤差影響

    表  1  仿真參數(shù)

    參數(shù)取值
    有效輻射功率110 dBm
    發(fā)射頻率8 GHz
    波束寬度2.2°×2.2°
    副瓣電平–25 dB
    初始距離100 km,70 km
    載機(jī)飛行速度300 m/s
    偵察飛機(jī)飛行速度300 m/s
    基線長(zhǎng)度30 km
    測(cè)向精度0.5°
    導(dǎo)航精度50 m
    采樣周期100 ms
    下載: 導(dǎo)出CSV

    表  2  不同輻射時(shí)間比對(duì)收斂時(shí)間的影響(s)

    輻射時(shí)間比$\beta $初始距離100 km初始距離70 km
    1.002.10.9
    0.902.21.0
    0.803.31.5
    0.753.81.6
    0.667.42.8
    0.5012.26.2
    0.3319.010.9
    0.2525.314.5
    0.2031.618.1
    0.1046.527.3
    下載: 導(dǎo)出CSV

    表  3  不同輻射時(shí)間比及時(shí)隙重復(fù)周期下的收斂時(shí)間(s)

    $\tau /T$(%)T(s)
    0.51234
    1003.23.23.23.23.2
    804.14.14.13.94.2
    506.87.16.56.65.4
    4010.19.38.67.28.8
    3020.529.224.515.813.0
    2051.550.148.340.844.7
    下載: 導(dǎo)出CSV
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  • 收稿日期:  2019-02-26
  • 修回日期:  2019-08-30
  • 網(wǎng)絡(luò)出版日期:  2019-09-04
  • 刊出日期:  2020-02-19

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