ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Detection and Parameter Estimation of Multicomponent Air Maneuvering Targets via RELAX
Received date: 2012-03-23
Revised date: 2012-12-14
Online published: 2013-04-23
Supported by
National Natural Science Foundation of China (61071194, 61231017, 60979002, 61079008); Fund of Civil Aviation University of China (2011kyE06) *Corresponding author. Tel.: 022-24092451 E-mail: haili@cauc.edu.cn
In this paper, a method based on RELAX is presented for detecting the multicomponent air maneuvering targets with the strong clutter background. This method combines the technique of reconstructing time samples with RELAX and effectively suppresses the interferences by stronger targets on the detection of weak targetsr. Therefore, the detection performance and parameter estimation precision of the multicomponent targets are enhanced at the same time. The method can provide an accurate estimate of the parameters even when the data sample is limited. At the same time, the Cramer-Rao bounds (CRBs) for the multicomponent maneuvering targets in airborne radar are derived. The effectiveness of the method is verified via simulated data.
LI Hai , WANG Xiaohan , WU Renbiao . Detection and Parameter Estimation of Multicomponent Air Maneuvering Targets via RELAX[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(4) : 873 -881 . DOI: 10.7527/S1000-6893.2013.0148
[1] Klemm R. Space-time adaptive processing principles and applications. London: The Institution of Electrical Engineers, 1998: 1-12.
[2] Wang Y L, Peng Y N. Space-time adaptive processing. Beijing: Tsinghua University Press, 2000: 26-45.
[3] Bao Z, Liao G S, Wu R B. Adaptive spatial-temporal processing for airborne radars. Chinese Journal of Electronics, 1993, 2(1): 1-7.
[4] Bao Z, Zhang Y H, Liao G S. Space-time signal processing for airborne radars. Modern Radar, 1994, 16(1):38-48.
[5] Wang D M. Study on space time adaptive maneuvering target detection technology. Tianjin: College of Electronic Information Engineering, Civil Aviation University of China, 2011.(in Chinese) 王冬梅. 机载雷达空中机动目标检测. 天津: 中国民航大学电信学院, 2011.
[6] Liu J C. Study on accelerating target detection and tracking. Changsha: School of Electronic Science and Engineering, National University of Defense Technology, 2007: 1-3.(in Chinese) 刘建成. 加速机动目标检测及跟踪技术研究. 长沙: 国防科学技术大学电子科学与工程学院, 2007: 1-3.
[7] Wu R B, Wang X H, Li H. Detection of the air maneuvering target based on the reconstruction of time sampling in the airborne radar. 2011 IEEE CIE International Conference on Radar. Chengdu, China: Institute of Electrical and Electronics Engineers, 2011: 38-41.
[8] Wu R B, Wang X H, Li H. Detection and parameter estimation of air maneuvering targets via reconstructing time samples. Journal of Electronics & Information Technology, 2012, 34(4): 936-942.(in Chinese) 吴仁彪, 王小寒, 李海. 基于重构时间采样的空中机动目标检测与参数估计. 电子与信息学报, 2012, 34(4): 936-942.
[9] Qi L, Tao L, Zhou S Y, et al. Detection and parameter estimation of multicomponent LFM signal based on the fractional Fourier transform. Science in China (Series F): Information Sciences, 2003, 33(8): 749-759.
[10] Pei S C, Ding J J. Fractional Fourier transform, Wigner distribution, and filter design for stationary and nonstationary random processes. IEEE Transactions on Signal Processing, 2010, 58(8): 4079-4092.
[11] Tao R, Deng B, Wang Y. Fractional Fourier transform and its applications. Beijing: Tsinghua University Press, 2009: 12-49.(in Chinese) 陶然, 邓兵, 王越. 分数阶傅里叶变换以及应用. 北京: 清华大学出版社, 2009: 12-49.
[12] Zhao X H, Tao R, Deng B, et al. New methods for fast computation of fractional Fourier transform. Acta Electronca Sinica, 2007, 35(6): 1089-1093. (in Chinese) 赵兴浩, 陶然, 邓兵, 等. 分数阶傅里叶变换的快速计算新方法. 电子学报, 2007, 35(6): 1089-1093.
[13] Liu Z S, Li J, Petre S. RELAX-based estimation of damped sinusoidal signal parameters. Signal Processing, 1997, 62(3): 311-321.
[14] Wu R B, Li J. Time-delay estimation via optimizing highly oscillatory cost functions. IEEE Journal of Oceanic Engineering, 1998, 23(3): 235-244.
[15] Wu R B, Jia Q Q, Li H. Detection of fast moving dim targets on airborne radar via STAP. Journal of Electronics & Information Technology, 2011, 33(6):1459-1464. (in Chinese) 吴仁彪, 贾琼琼, 李海. 机载雷达高速空中微弱动目标检测新方法. 电子与信息学报, 2011, 33(6): 1459-1464.
/
| 〈 |
|
〉 |
CJA