Performance analysis and improved method for airborne three-channel SAR/GMTI system
-
摘要: 在分析经典的三通道SAR(Synthetic Aperture Radar)地面动目标指示(GMTI,Ground Moving Target Indication)方法原理的基础上,提出一种较全面三通道SAR/GMTI性能评价方法.该方法同时考虑了载机存在速度误差、通道不匹配、杂波内部运动和系统噪声等主要误差因素,并分析了各种因素对系统性能的影响.经典的三通道SAR/GMTI方法存在的缺点是不能同时提高最大不模糊可检测速度、最小可检测速度和盲速指标的性能以满足系统设计的要求.给出了一种新的天线布置方案和动目标检测方法,改进的检测方法在不增加通道数的前提下,较好地解决了该问题,具有很好的实用性.最后通过计算机仿真验证了新方法的可行性.Abstract: A comprehensive performance analysis method of three-channel SAR(synthetic aperture radar) GMTI(ground moving target indication) was presented after analyzing the theory of conventional three channel SAR ground moving target indication methods. The main error factors such as velocity variety of radar platform, receiver channel mismatch, clutter internal motion and system noise were considered in this method and the detection performance of each error factor affect on was analyzed too. The shortcoming of conventional three channel SAR/GMTI methods is that the performance of minimum detectable velocity, ambiguous speed and blind-speed simultaneously can-t be improved to meet the requirements of the system. The improved method solves the problem without increasing receiving channels by rearranging the transmitting and receiving antennae. Theoretical analysis and simulation results show the validity of this scheme.
-
[1] Stockburger E F,Held D N. Interferometric moving ground target imaging IEEE International Radar Conference.Alexandria,VA: , 1995:438-443 [2] Gabele Martina,Sikaneta Ishuwa. A new method to create a virtual third antenna from a two-channel SAR-GMTI system[J]. Waveform Diversity & Design,2007(10):433-437 [3] 孙娜,周荫清,李景文. 基于DPCA技术的星载SAR/GMTI处理方法[J].电子与信息学报,2005,27(10):1564-1568 Sun Na,Zhou Yinqing,Li Jingwen. Algorithm of spaceborne SAR/GMTI based on DPCA[J].Journal of Electronics and Information Technology, 2005,27(10): 1564-1568(in Chinese) [4] Weihing Diana, Hinz Stefan, Meyer Franz,et al, An integral detection scheme for moving object indication in dual-channel high resolution spaceborne SAR data[J]. Urban Remote Sensing Joint Event,2007(6):1-6 [5] 杨贤林, 潘志刚, 沈汀. 机载双通道SAR/DPCA误差分析[J].电子与信息学报,2007, 29(3):536-539 Yang Xianlin,Pan Zhigang, Shen Ting. Error analysis for airborne dual-channel SAR/ DPCA system[J].Journal of Electronics and Information Technology, 2007, 29(3):536-539(in Chinese) [6] 张英.基于DPCA技术的SAR动目标检测及定位方法研究 .北京:北京航空航天大学电子信息工程学院, 2004 Zhang Ying. SAR moving target detection and location method based on DPCA technique .Beijing: School of Electronic and Information Engineering,Beijing University of Aeronautics and Astronautics, 2004 [7] Shen Chiu,Chuck Livingstone. A comparison of displaced phase centre antenna and along-track interferometry techniques for RADARSAT-2 ground moving target indication[J]. Can J Remote Sensing, 2005,31(1):37-51 [8] Bassem R Mahafza,AtefZ Elsherbeni.MATLAB simulations for radar systems design[M]. New York: Chapman&Hall /CRC,2004 [9] 郑明洁,杨汝良.一种改进的DPCA运动目标检测方法[J].电子学报, 2004,32(9):1429-1432 Zheng Mingjie,Yang Ruliang. An improved DPCA moving targets detecting algorithm[J]. Acta Electronica Sinica, 2004,32(9):1429-1432(in Chinese) 期刊类型引用(9)
1. 李艳琴,赵波,向道辉,高国富,焦锋,王梦,雷小飞. 大负载超声振动磨削系统的设计. 声学学报. 2022(01): 85-94 . 百度学术
2. 巩建辉,王晨丰,吴承启. 圆锥悬链线形复合变幅杆的设计. 机械工程师. 2022(01): 151-153 . 百度学术
3. 巩建辉. 倒指数形复合变幅杆的设计. 自动化技术与应用. 2022(02): 108-110 . 百度学术
4. LI Yanqin,ZHAO Bo,XIANG Daohui,GAO Guofu,JIAO Feng,WANG Meng,LEI Xiaofei. Design of large-load ultrasonic vibration grinding system. Chinese Journal of Acoustics. 2022(02): 154-168 . 必应学术
5. 周瑞峰,秦慧斌,冯毅,庞学慧,吕明. 旋转超声磨削平行砂轮复合变幅器设计与试验. 应用声学. 2021(04): 553-561 . 百度学术
6. 巩建辉,喻刚强,姚静,严碧歌. 基于等效电路法复合变幅杆的优化设计. 机械与电子. 2021(09): 20-23 . 百度学术
7. 杨宇辉,钟守炎,谢春晓,马文举,叶国良,陈立甲. 纵扭复合超声换能器的频率灵敏度及其结构优化研究. 机械科学与技术. 2021(10): 1567-1573 . 百度学术
8. 贾海利,王宇辰,孔凡. 压电换能器的设计与温度特性研究. 现代制造工程. 2020(07): 115-120 . 百度学术
9. 陈长江,翁玲,高杰聪,赵轩,张原野,陈盛华. Fe-Ga窗式换能器结构设计与分析. 传感技术学报. 2020(08): 1085-1090 . 百度学术
其他类型引用(11)
-

计量
- 文章访问数: 3553
- HTML全文浏览量: 193
- PDF下载量: 1034
- 被引次数: 20