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L波段雷達(dá)電離層高速運(yùn)動(dòng)目標(biāo)ISAR成像補(bǔ)償方法

黃小紅,  文貢堅(jiān)

黃小紅, 文貢堅(jiān). L波段雷達(dá)電離層高速運(yùn)動(dòng)目標(biāo)ISAR成像補(bǔ)償方法[J]. 電子與信息學(xué)報(bào), 2015, 37(12): 2971-2976. doi: 10.11999/JEIT150646
引用本文: 黃小紅, 文貢堅(jiān). L波段雷達(dá)電離層高速運(yùn)動(dòng)目標(biāo)ISAR成像補(bǔ)償方法[J]. 電子與信息學(xué)報(bào), 2015, 37(12): 2971-2976. doi: 10.11999/JEIT150646
Huang Xiao-hong, Wen Gong-jian. Compensating Method of L-band Radar ISAR Imaging for Ionosphereic Target with High-velocity[J]. Journal of Electronics & Information Technology, 2015, 37(12): 2971-2976. doi: 10.11999/JEIT150646
Citation: Huang Xiao-hong, Wen Gong-jian. Compensating Method of L-band Radar ISAR Imaging for Ionosphereic Target with High-velocity[J]. Journal of Electronics & Information Technology, 2015, 37(12): 2971-2976. doi: 10.11999/JEIT150646

L波段雷達(dá)電離層高速運(yùn)動(dòng)目標(biāo)ISAR成像補(bǔ)償方法

doi: 10.11999/JEIT150646 cstr: 32379.14.JEIT150646
基金項(xiàng)目: 

國家自然科學(xué)基金(61002025)

Compensating Method of L-band Radar ISAR Imaging for Ionosphereic Target with High-velocity

Funds: 

The National Natural Science Foundation of China (61002025)

  • 摘要: 目標(biāo)高速運(yùn)動(dòng)和電離層效應(yīng)都會(huì)對低頻段寬帶線性調(diào)頻雷達(dá)信號(hào)的相位產(chǎn)生調(diào)制現(xiàn)象，進(jìn)而降低逆合成孔徑雷達(dá)(ISAR)成像分辨率。為得到清晰的目標(biāo)ISAR圖像，需有效消除這兩者對目標(biāo)回波的影響。該文首先建立電離層高速運(yùn)動(dòng)目標(biāo)回波的信號(hào)模型，再根據(jù)目標(biāo)回波為高階多項(xiàng)式相位信號(hào)的特點(diǎn)，提出基于離散多項(xiàng)式變換的高階相位估計(jì)算法，利用高階相位估計(jì)值進(jìn)行回波信號(hào)相位調(diào)制分量補(bǔ)償，實(shí)現(xiàn)ISAR成像的自聚焦。仿真實(shí)驗(yàn)表明，該算法可以準(zhǔn)確估計(jì)回波信號(hào)高階相位參數(shù)，提高ISAR成像質(zhì)量。
    Abstract: High velocity and Ionosphereic both modulate the phase of low carrier frequency wide-band linearly frequency modulated radar signal , It make the resolution of Inverse SAR (ISAR) image lower. In order to get clean ISAR image, the effect of high velocity and ionosphereic are both must be removed. Firstly, signal model of ionosphereic target with high-velocity are deduced. The high order phase signal parameter estimation method is proposed, using discrete polynomial-phase transform. Motion compensation is done with the estimated values got by this method. Simulation experiments show that the parameters can be estimated right, it can improve the ISAR image deformed by hyper-velocity and ionosphereic.
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出版歷程
  • 收稿日期:  2015-06-01
  • 修回日期:  2015-09-16
  • 刊出日期:  2015-12-19

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