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一種彈載SAR子孔徑成像算法

江淮,  陳思,  趙惠昌,  漢敏,  張淑寧

江淮, 陳思, 趙惠昌, 漢敏, 張淑寧. 一種彈載SAR子孔徑成像算法[J]. 電子與信息學報, 2017, 39(10): 2526-2530. doi: 10.11999/JEIT161337
引用本文: 江淮, 陳思, 趙惠昌, 漢敏, 張淑寧. 一種彈載SAR子孔徑成像算法[J]. 電子與信息學報, 2017, 39(10): 2526-2530. doi: 10.11999/JEIT161337
JIANG Huai, CHEN Si, ZHAO Huichang, HAN Min, ZHANG Shuning. Subaperture Imaging Algorithm for Missile-borne SAR[J]. Journal of Electronics & Information Technology, 2017, 39(10): 2526-2530. doi: 10.11999/JEIT161337
Citation: JIANG Huai, CHEN Si, ZHAO Huichang, HAN Min, ZHANG Shuning. Subaperture Imaging Algorithm for Missile-borne SAR[J]. Journal of Electronics & Information Technology, 2017, 39(10): 2526-2530. doi: 10.11999/JEIT161337

一種彈載SAR子孔徑成像算法

doi: 10.11999/JEIT161337 cstr: 32379.14.JEIT161337
  • 1.

    (南京理工大學電子工程與光電技術學院 南京 210094）②(東南大學微波與毫米波重點實驗室 南京 210094)

基金項目: 

國家自然科學基金(61301216)，江蘇省自然科學基金(BK20160848)

Subaperture Imaging Algorithm for Missile-borne SAR

  • 1.

    (School of Electronic &

  • 2.

    (State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210094, China)

Funds: 

The National Natural Science Foundation of China (61301216), The Natural Science Foundation of Jiangsu Province (BK20160848)

  • 摘要: 彈載合成孔徑雷達在子孔徑信號處理時，由于運動的復雜性和距離方位的強耦合，增加了成像處理的難度。針對這一問題，該文分析了該成像體制下的距離徙動特性并引入二次調頻函數(shù)進行統(tǒng)一距離徙動校正；在方位向處理上則通過頻域投影補償調頻率空變。與傳統(tǒng)算法相比，新算法可對子孔徑回波進行更有效的成像與聚焦，仿真結果證明了算法的正確性和有效性。
    Abstract: In the missile borne subaperture SAR mode, the complicate motion of the platform and the strong coupling between range and azimuth present substantial difficulty for echo data processing. To solve this problem, the range migration characteristics of the echo are analyzed and a secondary frequency function is introduced for uniform migration correction. During the azimuth processing, the azimuth frequency domain projection is applied to compensating the Doppler frequency modulation variation. Compared with the traditional algorithm, this proposed algorithm can focus the echo more effectively. Simulation results show the correctness and validity of the proposed algorithm.
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  • YI Yusheng, ZHANG Linrang, LIU Nan, et al. Imaging algorithm for missile-borne SAR with diving acceleration based on series reversion[J]. Systems Engineering Electronics, 2009, 31(12): 2563-2568.
    易予生, 張林讓, 劉楠等. 基于級數(shù)反演的俯沖加速運動狀態(tài)彈載SAR成像算法[J]. 系統(tǒng)工程與電子技術, 2009, 31(12): 2563-2568.
    周鵬, 周松, 熊濤, 等. 基于級數(shù)反演的彈載SAR下降段CZT成像算法[J]. 電子與信息學報, 2010, 32(12): 1806-1808. doi: 10.3724/SP.J.1146.2010.00452.
    ZHOU Peng, ZHOU Song, XIONG Tao, et al. A chirp-Z transform imaging algorithm for missile borne SAR with diving maneuver based on the method of series reversion[J]. Journal of Electronics Information Technology, 2010, 32(12): 1806-1808. doi: 10.3724/SP.J.1146.2010.00452.
    周松, 包敏, 周鵬, 等. 基于方位非線性變標的彈載SAR下降段成像算法[J]. 電子與信息學報, 2011, 33(6): 1420-1426. doi: 10.3724/SP.J.1146.2010.01124.
    ZHOU Song, BAO Min, ZHOU Peng, et al. An imaging algorithm for missile-borne SAR with downward movement based on azimuth nonlinear chirp scaling[J]. Journal of Electronics Information Technology, 2011, 33(6): 1420-1426. doi: 10.3724/SP.J.1146.2010.01124.
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    李震宇, 梁毅, 邢孟道, 等. 彈載合成孔徑雷達大斜視子孔徑頻域相位濾波成像算法[J]. 電子與信息學報, 2015, 37(4): 954-959. doi: 10.11999/JEIT140618.
    LI Zhenyu, LIANG Yi, XING Mengdao, et al. A frequency phase filtering imaging algorithm for highly squint missile- borne synthetic aperture radar with subaperture[J]. Journal of Electronics Information Technology, 2015, 37(4): 954-959. doi: 10.11999/JEIT140618.
    ZENG Tao, LI Yinghe, DING Zegang, et al. Subaperture approach based on azimuth-dependent range cell migration correction and azimuth focusing parameter equalization for maneuvering high-squint-mode SAR omega-K algorithm for highly squinted missile-borne SAR with constant acceleration [J]. IEEE Geoscience and Remote Sensing, 2015, 53(12): 6719-6733. doi: 10.1109/TGRS.015.2447393.
    LIU Gaogao, LI Peng, TANG Shiyang, et al. Focusing highly squinted data with motion errors based on modified non- linear chirp scaling[J]. IET Radar, Sonar and Navigation. 2013, 12(20): 568-612. doi: 10.1049/iet-rsn.2012.0134.
    董祺, 孫光才, 楊澤民, 等. 直角坐標多級后投影聚束SAR成像算法[J]. 電子與信息學報, 2016, 38(6): 1482-1488. doi: 10.11999/JEIT150990.
    DONG Qi, SUN Guangcai, YANG Zemin, et al. Cartesian coordinates factorized back-projection algorithm for spotlight SAR[J]. Journal of Electronics Information Technology, 2016, 38(6): 1482-1488. doi: 10.11999/JEIT150990.
    呂幼新, 張明友, 向敬成. 降低線性調頻脈沖壓縮信號旁瓣的方法[J]. 電子科技大學學報, 1993, 22(4): 344-349.
    LV Youxin, ZHANG Mingyou, and XIANG Jingchen. A method for reducing sidelobe of linear frequency modulated pulse compression signal[J]. Journal of University of Electronic Science and Technology of China, 1993, 22(4): 344-349.
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出版歷程
  • 收稿日期:  2016-12-08
  • 修回日期:  2017-05-09
  • 刊出日期:  2017-10-19

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