平臺(tái)運(yùn)動(dòng)測(cè)量誤差對(duì)陣列天線合成孔徑雷達(dá)三維成像影響分析
doi: 10.11999/JEIT141106
基金項(xiàng)目:
國(guó)家自然科學(xué)基金(61372186)資助課題
Impact Analysis of Motion Measurement Error on Array Antenna SAR Three Dimensional Imaging
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摘要: 陣列天線合成孔徑雷達(dá)(SAR)可實(shí)現(xiàn)3維成像。為了提高成像質(zhì)量，使用測(cè)量設(shè)備獲取平臺(tái)的運(yùn)動(dòng)信息以進(jìn)行運(yùn)動(dòng)補(bǔ)償，而測(cè)量誤差會(huì)影響補(bǔ)償及成像質(zhì)量，需對(duì)其進(jìn)行分析。該文首先建立了陣列天線SAR 3維成像模型和測(cè)量誤差分析模型，接著分別從位置和姿態(tài)角兩個(gè)方面分析了測(cè)量誤差對(duì)相位誤差的影響，并比較不同方向誤差影響的大小，然后通過仿真分析了誤差對(duì)成像指標(biāo)的影響，并引入姿態(tài)誤差基線比來量化姿態(tài)角誤差的影響。最后得出高程向和橫滾角測(cè)量誤差影響最大的結(jié)論，給出了限定要求下測(cè)量誤差的容忍值。該文的結(jié)論為測(cè)量設(shè)備的選取和設(shè)計(jì)以及成像和補(bǔ)償方法的選擇和分析提供了理論指導(dǎo)和參考。
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關(guān)鍵詞:
- 合成孔徑雷達(dá) /
- 陣列天線 /
- 3維成像 /
- 測(cè)量誤差 /
- 誤差分析
Abstract: The array antenna SAR is able to realize the three dimensional imaging. In order to improve the imaging quality, the measurement equipment is adopted to acquire the motion information of the array antennas platform for the motion compensation. However, the measurement error may impact the quality of compensation and imaging. Therefore analysis of the impact is indispensable. This paper establishes the imaging model and the measurement error analysis model, analyses the impact on phase error from the aspect of position and angle measurement error respectively, compares the impact of measurement error in the different directions, analyses the impact on imaging index by the simulation, and introduces the idea of angle-error-array-length-ratio to quantify the impact of angle error. The conclusion that the measurement error in the height and roll angle has the biggest impact is proposed and the error tolerance in certain conditions is given at last, which provides the theoretical guidance and reference for the choice and design of the measurement equipment and the motion compensation method.-
Key words:
- SAR /
- Array antenna /
- Three dimensional imaging /
- Measurement error /
- Error analysis
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Gierull C H. On a concept for an airborne downward-looking imaging radar[J]. International Journal of Electronics and Communications, 1999, 53(6): 295-304. Reigber A and Moreira A. First demonstration of airborne SAR tomography using multibaseline L-band data[J]. IEEE Transactions on Geoscience and Remote Sensing, 2000, 38(5): 2142-2152. 保錚, 刑孟道, 王彤. 雷達(dá)成像技術(shù)[M]. 北京: 電子工業(yè)出版社, 2005: 200-206. Bao Zheng, Xing Meng-dao, and Wang Tong. Radar Imaging Technique[M]. Beijing: Publishing House of Electronics Industry, 2005: 200-206. 杜磊. 陣列天線下視合成孔徑雷達(dá)三維成像模型、方法與實(shí)驗(yàn)研究[D]. [博士論文]. 北京: 中國(guó)科學(xué)院電子學(xué)研究所, 2010. Du Lei. Study on model, algorithm and experiment for downward-looking synthetic aperture radar three- dimensional imaging based on linear array antennas[D]. [Ph.D. dissertation], Beijing: Institute of Electronics, Chinese Academy of Sciences, 2010. Hou Ying-ni, Li Dao-jing, and Hong Wen. The thinned array time division multiple phase center aperture synthesis and application[C]. Proceedings of the IEEE International Geoscience and Remote Sensing Symposium 2008 (IGARSS 2008), Boston, USA, 2008: 25-28. 彭學(xué)明, 王彥平, 譚維賢, 等. 基于跨航向稀疏陣列的機(jī)載下視MIMO 3D-SAR 3維成像算法[J]. 電子與信息學(xué)報(bào), 2012, 34(4): 943-949. Peng Xue-ming, Wang Yan-ping, Tan Wei-xian, et al.. Airborne downward-looking MIMO 3D-SAR imaging algorithm based on cross-track thinned array[J]. Journal of Electronics Information Technology, 2012, 34(4): 943-949. 侯穎妮. 基于稀疏陣列天線的雷達(dá)成像技術(shù)研究[D]. [博士論文], 北京: 中國(guó)科學(xué)院電子學(xué)研究所, 2010. Hou Ying-ni. Study of radar imaging technology based on sparse array antenna[D]. [Ph.D. dissertation], Beijing: Institute of Electronics, Chinese Academy of Sciences, 2010. Nouvel J F, Ruault du Plessis O, Svedin J, et al.. Along track interferometry on rhone river[C]. Proceedings of the 7th European Conference on Synthetic Aperture Radar, Friedrichshafen, Germany, 2008: 495-497. Peng Xue-ming, Wang Yan-ping, Tan Wei-xian, et al.. Downward looking 3D SAR based on uniform virtual phase centre restricted symmetrical distributed thinned array[C]. Proceedings of the 2011 IEEE CIE International Conference on Radar, Xian, China, 2011(l): 380-383. 于春艷, 謝亞楠, 趙海蘭, 等. 基于新型陣列配置的機(jī)載MIMO-SAR下視三維成像性能研究[J]. 電子測(cè)量技術(shù), 2014, 37(2): 64-69. Yu Chun-yan, Xie Ya-nan, Zhao Hai-lan, et al.. Airborne downward-looking MIMO 3D-SAR imaging properties based on the new array configuration[J]. Electronic Measurement Technology, 2014, 37(2): 64-69. Wang Jie, Liang Xing-dong, Ding Chi-biao, et al.. An improved OFDM chirp waveform used for MIMO SAR system[J]. SCIENCE CHINA Information Sciences, 2014, 57(6): 65-73. 張清娟, 李道京, 李烈辰. 連續(xù)場(chǎng)景的稀疏陣列SAR側(cè)視三維成像研究[J]. 電子與信息學(xué)報(bào), 2013, 35(5): 1097-1102. Zhang Qing-juan, Li Dao-jing, and Li Lie-chen. Research on continuous scene side-looking 3D imaging based on sparse array[J]. Journal of Electronics Information Technology, 2013, 35(5): 1097-1102. 彭文杰. 基于壓縮感知的陣列SAR三維成像方法研究[D]. [碩士論文], 成都: 電子科技大學(xué), 2013. Peng Wen-jie. Array SAR 3D imaging method based on compressed sensing[D]. [Master dissertation], Chengdu: University of Electronic Science and Technology of China, 2013. 韋順軍. 線陣三維合成孔徑雷達(dá)稀疏成像技術(shù)研究[D]. [博士論文], 成都: 電子科技大學(xué), 2013. Wei Shun-jun. Research on linear array three-dimensional synthetic aperture radar sparse imaging technology[D]. [Ph.D. dissertation], Chengdu: University of Electronic Science and Technology of China, 2013. 楊澤民, 孫光才, 邢孟道, 等. 基于多通道聯(lián)合自聚焦技術(shù)的機(jī)載三維SAR運(yùn)動(dòng)補(bǔ)償[J]. 電子與信息學(xué)報(bào), 2012, 34(7): 1581-1588. Yang Ze-min, Sun Guang-cai, Xing Meng-dao, et al.. Motion compensation for airborne 3-D SAR based on joint multi-channel auto-focusing technology[J]. Journal of Electronics Information Technology, 2012, 34(7): 1581-1588. 朱海洋, 洪峻, 明峰. 相位中心偏差對(duì)機(jī)載陣列天線下視3D-SAR成像影響分析[J]. 電子與信息學(xué)報(bào), 2012, 34(4): 910-916. Zhu Hai-yang, Hong Jun, and Ming Feng. Analysis of impact of phase center variations in linear array antenna downward- looking 3D-SAR imaging[J]. Journal of Electronics Information Technology, 2012, 34(4): 910-916. -
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