复杂探测背景下的LFMCW雷达动目标二维检测方法

doi:10.3969/j.issn.1001-2400.2011.04.030

J4 ›› 2011, Vol. 38 ›› Issue (4): 167-172.doi: 10.3969/j.issn.1001-2400.2011.04.030

• Original Articles • Previous Articles Next Articles

Moving target detection and processing method of LFMCW radar under complex background

HOU Zhi;MIAO Chen;ZHANG Jindong;WU Wen

(Ministerial Key Lab. of JGMT, Nanjing Univ. of Sci. and Tech., Nanjing 210094， China)

Received:2011-02-13 Online:2011-08-20 Published:2011-09-28
Contact: HOU Zhi E-mail:houzhi_1982@yahoo.cn

Abstract

Abstract:

In order to improve the detection performance of LFMCW radar under complex background, the echo signal characteristics in the one- and two-dimensional frequency domain are analyzed and a new moving target detection method is presented. This method transforms the signal into the two-dimensional frequency domain and detects the moving target by using the 2-dimensional CFAR algorithm, which eliminates the interferences from complex background. After detection, by utilizing the information in the 2-dimensional frequency domain, the target range, velocity and azimuth angle are acquired and trajectory is measured. Simulation and experimental results demonstrate the effectiveness of this method.

Key words: linear frequency modulated continuous wave radar, two-dimension constant false alarm rate, moving target trajectory

CLC Number:

TN959.1

HOU Zhi;MIAO Chen;ZHANG Jindong;WU Wen. Moving target detection and processing method of LFMCW radar under complex background[J].J4, 2011, 38(4): 167-172.

References

［1］ Stove A G. Linear FMCW Radar Techniques ［J］. IEEE Proceeding-F: Radar and Signal Processing, 1992, 139(5): 343-350.
［2］张荣权, 杨建宇, 熊金涛, 等. 对称三角线性调频连续波信号模糊函数分析［J］. 电子学报, 2004, 32(3): 353-356.
Zhang Rongquan, Yang Jianyu, Xiong Jintao, et al. Analysis of Ambiguity Function of Symmetrical Triangular Linear Frequency Modulation Continuous Wave Signal ［J］. Acta Electronica Sinica, 2004, 32(3): 353-356.
［3］刘贵喜, 凌文杰. LFMCW雷达密集运动目标检测［J］. 红外与毫米波学报, 2005, 24(1): 76-80.
Liu Guixi, Ling Wenjie. Dense-Moving Target Detection of LFMCW RADAR ［J］. Journal of Infrared and Millimeter Waves, 2005, 24(1): 76-80.
［4］杨建宇, 凌太兵, 贺峻. LFMCW雷达运动目标检测与距离速度去耦合［J］. 电子与信息学报, 2004, 26(2): 169-173.
Yang Jianyu, Ling Taibing, He Jun. MTD and Range-Velocity Decouopling of LFMCW Radar ［J］. Journal of Electronics ＆ Information Technology, 2004, 26(2): 169-173.
［5］ Blake S. OS-CFAR Theory for Multiple Targets and Nonuniform Clutter ［J］. Aerospace and Electronic Systems, 1988, 24(6): 785-790.
［6］ Han Y I, Kim T. Performance of Excision GO-CFAR Detectors in Nonhomogeneous Environments ［J］. Radar, Sonar and Navigation, 1996, 143(2): 105-112.
［7］ Erfanian S, Faramarzi S. Performance of Excision Switching-CFAR in K Distributed Sea Clutter ［C］//14th Asia-Pacific Conference on Communications. Tokyo: IEEE, 2008: 1-4.
［8］ Wu Yizhong, Bao Ying, Shi Zhiguo, et al. A Novel Range Detection Method for 60GHz LFMCW Radar ［C］//IEEE 72nd Vehicular Technology Conference. Ottawa: IEEE, 2010: 1-5.
［9］侯志, 缪晨, 吴文, 等. 一种对称三角线波调频连续波雷达的校正算法［J］. 兵工学报, 2010, 31(12): 112-116.
Hou Zhi, Miu Chen, Wu Wen, et al. A Kind of Calibration Algorithm of Symmetrical Triangular LFMCW Radar ［J］. Acta Armamentarii, 2010, 31(12): 112-116.
［10］ Liu Huaishan, Zhou Luyang, Wang Lijie, et al. SNR Estimation Method of LFM Signal Detection ［C］//2009 International Forum on Computer Science-Technology and Applications: 1. Chongqing: IEEE, 2009: 440-443.
［11］ Zhang Renli, Zou Yiwei, Sheng Weixing, et al. An Improved CFAR Detector for Non-homogeneous Clutter Environment ［C］//2010 International Symposium on Signals, Systems and Electronics: 2. Nanjing: IEEE, 2010: 1-4.
［12］ Hu Shibing. Performance Analysis of Frequency Sweep Nonlinearities in LFM Radars ［C］//2010 International Conference on Electrical and Control Engineering. Wuhan: IEEE, 2010: 3977-3980.

Moving target detection and processing method of LFMCW radar under complex background

PDF (PC)

Like

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 1

Metrics

Comments

Recommended 0