基于最小二乘估計(jì)的InISAR空間目標(biāo)三維成像方法
doi: 10.11999/JEIT151000
基金項(xiàng)目:
國(guó)家自然科學(xué)基金(61171122, 61201318, 61501011, 61501012)
Interferometric ISAR Imaging for 3-D Geometry of Uniformly Rotating Targets Based on Least Squares Estimation Method
Funds:
The National Natural Science Foundation of China (61171122, 61201318, 61501011, 61501012)
-
摘要: InISAR系統(tǒng)能夠在短觀測(cè)時(shí)間內(nèi)實(shí)現(xiàn)對(duì)目標(biāo)的3維成像，在目標(biāo)識(shí)別和分類中有廣泛應(yīng)用。但是ISAR成像平面不僅取決于目標(biāo)相對(duì)雷達(dá)的空間位置，還和目標(biāo)的運(yùn)動(dòng)情況有關(guān)。針對(duì)空間平穩(wěn)運(yùn)動(dòng)目標(biāo)，該文利用互相垂直的L型基線構(gòu)成雙通道InISAR系統(tǒng)，對(duì)各天線接收到的回波分別采用各自的參考距離進(jìn)行聚焦處理，采用傳統(tǒng)的距離-多普勒算法得到目標(biāo)散射點(diǎn)2維像，通過(guò)提取各散射點(diǎn)的干涉相位和多普勒信息，采用最小二乘方法對(duì)目標(biāo)的有效轉(zhuǎn)動(dòng)角速度大小和方向進(jìn)行估計(jì)，進(jìn)而估計(jì)出散射點(diǎn)的3維位置，實(shí)現(xiàn)目標(biāo)3維成像。仿真實(shí)驗(yàn)驗(yàn)證了所提方法的有效性和魯棒性。
-
關(guān)鍵詞:
- 干涉逆合成孔徑雷達(dá) /
- 平穩(wěn)運(yùn)動(dòng)目標(biāo) /
- 3維成像 /
- 最小二乘估計(jì) /
- 角速度估計(jì)
Abstract: Interferometric Inverse Synthetic Aperture Radar (InISAR) images are widely used for 3-D reconstruction of maneuvering targets in a short observation time. InISAR system is always used for target classification and recognition. Nevertheless, the image plane depends on the targets own motions and its relative position with respect to the radar. To overcome this problem, this paper proposes an InISAR system containing two baseline perpendicular to each other. The echo signal received by each antenna is focused by the respective reference range. The target angular velocity and Euler angle are estimated by using the interferometric phase with the least square method. Then, the scatterers 3-D coordinates are estimated. Simulation experiments show the effectiveness and robustness of the proposed method. -
MARTORELLA M, STAGLIANO D, SALVETTI F, et al. 3D interferometric ISAR imaging of noncooperative targets[J]. IEEE Transactions on Aerospace and Electronic Systems, 2014, 55(4): 379-383. doi: 10.1109/TAES.2014. 130210. 張穎康, 肖揚(yáng), 胡紹海. 非合作雷達(dá)目標(biāo)散射中心關(guān)聯(lián)和三維重建算法[J]. 電子與信息學(xué)報(bào), 2011, 33(9): 2076-2082. doi: 10.3724/SP.J.1146.2010.01449. ZHANG Yingkang, XIAO Yang, and HU Shaohai. Method of scattering centers association and 3D reconstruction for non-cooperative radar target[J]. Journal of Electronics Information Technology, 2011, 33(9): 2076-2082. doi: 10.3724/SP.J.1146.2010.01449. 梁必帥, 張群, 婁昊, 等. 基于微動(dòng)特征關(guān)聯(lián)的空間自旋目標(biāo)寬帶雷達(dá)三維成像[J]. 電子與信息學(xué)報(bào), 2013, 35(9): 2133-2140. doi: 10.3724/SP.J.1146.2012.01537. LIANG Bishuai, ZHANG Qun, LOU Hao, et al. Three-dimensional broadband radar imaging of space spinning targets based on micro-motion parameter correlation[J]. Journal of Electronics Information Technology, 2013, 35(9): 2133-2140. doi: 10.3724/SP.J.1146. 2012.01537. 梁必帥, 張群, 婁昊, 等. 基于微動(dòng)特征關(guān)聯(lián)的空間非對(duì)稱自旋目標(biāo)雷達(dá)三維成像方法[J]. 電子與信息學(xué)報(bào), 2014, 36(6): 1381-1388. doi: 10.3724/SP.J.1146.2013.01147. LIANG Bishuai, ZHANG Qun, Lou Hao, et al. Method of three-dimensional imaging based on micro-motion feature association for spatial asymmetrical spinning targets[J]. Journal of Electronics Information Technology, 2014, 36(6): 1381-1388. doi: 10.3724/SP.J.1146.2013.01147. 王昕, 郭寶鋒, 尚朝軒. 基于二維ISAR圖像序列的雷達(dá)目標(biāo)三維重建方法[J]. 電子與信息學(xué)報(bào), 2013, 35(10): 2475-2480. doi: 10.3724/SP.J.1146.2013.00140. WANG Xin, GUO Baofeng, and SHANG Chaoxuan. 3D reconstruction of target geometry based on 2D data of inverse synthetic aperture radar images[J]. Journal of Electronics Information Technology, 2013, 35(10): 2475-2480. doi: 10.3724/SP.J.1146.2013.00140. 王俊, 文亞亞, 禹娟. 一種基于運(yùn)動(dòng)目標(biāo)ISAR像序列的三維重構(gòu)方法[J]. 系統(tǒng)仿真學(xué)報(bào), 2013, 35(4): 809-816. WANG Jun, WEN Yaya, and YU Juan. Three dimensional reconstruction method for moving target from ISAR sequences[J]. Journal of System Simulation, 2013, 25(4): 809-816. MORITA T and KANADE T. A sequential factorization method for recovering shape and motion from image streams[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 1997, 9(8): 858-867. doi: 10.1109/ 34.608289. WANG Genyuan, XIA Xianggen, and CHEN Victor C. Three-dimensional ISAR imaging of maneuvering targets using three receivers[J]. IEEE Transactions on Image Processing, 2001, 10(3): 436-447. doi: 10.1109/83.908519. ZHAO Lizhi, GAO Meiguo, MARTORELLA M, et al. Bistatic three-dimensional interferometric ISAR image reconstruction[J]. IEEE Transactions on Aerospace and Electronic Systems, 2015, 51(2): 951-961. doi: 10.1109/TAES. 2014.130702. WEI Qiu, MARTORELLA M, ZHOU Jianxiong, et al. Three-dimensional inverse synthetic aperture radar imaging based on compressive sensing[J]. IET Radar, Sonar Navigation, 2015, 9(4): 411-420. doi: 10.1049/iet-rsn. 2014.0260. 張榆紅, 邢孟道, 徐剛. 基于稀疏孔徑的聯(lián)合稀疏約束干涉ISAR機(jī)動(dòng)目標(biāo)三維成像[J]. 電子與信息學(xué)報(bào), 2015, 37(9): 2151-2157. doi: 10.11999/JEIT150125. ZHANG Yuhong, XING Mengdao, and XU Gang. Joint sparsity constraint interferometric ISAR imaging for 3-D geometry of maneuvering targets with sparse apertures[J]. Journal of Electronics Information Technology, 2015, 37(9): 2151-2157. doi: 10.11999/JEIT150125. MARTORELLA M, SALVETTI F, and STAGLIANO D. 3D target reconstruction by means of 2D-ISAR imaging and interferometry[C]. Radar Conference, Ottawa, 2013: 1-6. doi: 10.1109/RADAR.2013.6586064. LIU C L, HE F, GAO X Z, et al. Squint-mode InISAR imaging based on nonlinear least square and coordinates transform[J]. Science China Technological Sciences, 2011, 54(12): 3332-3340. doi: 10.1007/s11431-011-4515-9. 保錚, 邢孟道, 王彤. 雷達(dá)成像技術(shù)[M]. 北京: 電子工業(yè)出版社, 2005: 24-30. BAO Zheng, XING Mengdao, and WANG Tong. Radar Imaging Technology[M]. Beijing, Publishing House of Electronics Industry, 2005: 24-30. 劉承蘭, 高勛章, 賀峰, 等. 一種基于相位校正的InISAR圖像配準(zhǔn)新方法[J]. 國(guó)防科技大學(xué)學(xué)報(bào), 2011, 33(5): 116-122. LIU Chenglan, GAO Xunzhang, HE Feng, et al. A novel method for Image registration in InISAR imaging based on phase correction[J]. Journal of National University of Defense Technology, 2011, 33(5): 116-122. ZHANG Qun and YEO T S. Three-dimensional SAR imaging of a ground moving target using the InISAR technique[J]. IEEE Transactions on Geoscience and Remote Sensing, 2004, 42(9): 1818-1828. doi: 10.1109/TGRS.2004.831863. -
計(jì)量
- 文章訪問(wèn)數(shù): 1451
- HTML全文瀏覽量: 135
- PDF下載量: 562
- 被引次數(shù): 0
下載:
