双载频步进频率雷达精确速度测量方法

曹宇飞; 屈晓光; 黄培康

doi:10.3724/SP.J.1146.2008.00296

双载频步进频率雷达精确速度测量方法

doi: 10.3724/SP.J.1146.2008.00296

计量
- 文章访问数: 2864
- HTML全文浏览量: 120
- PDF下载量: 990
- 被引次数: 0
出版历程
- 收稿日期: 2008-03-17
- 修回日期: 2008-12-15
- 刊出日期: 2009-05-19

Precise Velocity Measurement Approach in Dual-Carrier-Frequency Stepped-Frequency Radar

摘要

摘要: 步进频率雷达中，目标的径向运动将导致合成的目标径向一维距离像产生距离徙动和波形失真，需要对目标速度进行测量以补偿其影响。该文提出基于单个步进频率脉冲串的共轭法速度测量方法，然后提出一种同时发射双载频步进频率信号的速度测量方法，并分析了其潜在测量精度。理论分析和仿真结果证明，两种方法相结合不仅具有普通步进频率信号的高距离分辨率等优点，而且具有速度测量无模糊测量范围大、测量精度高的特点，可以利用速度测量值补偿目标一维距离像的距离移动和失真，从而同时实现高速目标的速度精确测量和高分辨成像。
- 雷达;步进频率;共轭法;双载频;高精度速度测量
Abstract: In stepped frequency radar, the velocity of targets must be estimated and compensated to eliminate the range migration and distortion due to target moving. The conjugation method is presented for velocity measurement in stepped frequency radar. And a prototype of a stepped frequency system with dual carrier frequencies is proposed. With processing approach proposed, the system has both the advantage of high range resolution of stepped frequency radar and the capability of high precise velocity measurement. The estimated velocity can be used to compensate range migration and distortion in radar imaging. Therefore, the dual-carrier-frequency stepped-frequency radar can achieve high precise velocity measurement and high resolution simultaneously.

HTML全文

参考文献(1)

Wehner D R. High Resolution Radar, Second Edition [M],London: Artech House, 1995, Chapter 5.[2]王建国, 何佩琨, 龙腾. 径向速度测量在Kalman 滤波中的应用[J]. 北京理工大学学报, 2002, 22(2): 225-227.Wang Jian-guo, He Pei-kun, and Long Teng. Use of radialvelocity measurements in Kalman filter[J]. Journal of BeijingInstitute of Technology, 2002, 22(2): 225-227.[3]李海英, 杨汝良. 径向速度对频率步进雷达目标距离像影响分析[J].电子与信息学报.2003, 25(5):592-597浏览[4]蒋楠稚, 王毛路, 李少洪等. 频率步进脉冲距离高分辨一维成像速度补偿分析[J].电子与信息学报.1999, 21(5):665-670浏览[5]刘铮, 张守宏. 步进频率雷达目标的运动参数估计[J]. 电子学报, 2000, 28(3): 43-45.Liu Zheng and Zhang Shou-hong. Estimation of target motionparameter in a stepped frequency pulses radar [J]. ActaElectronica Sinica, 2000, 28(3): 43-45.[6]Niu Tao and Chen Wei-dong. Radial Motion Estimation forPulse Stepped-frequency Radar [C]. 7th InternationalConference on Signal Processing, Beijing, China, Sept. 2004,Vol.3: 1961-1964.[7]Zhu Yong-feng, Zhao Hong-zhong, and Fu Qiang.Simultaneously velocity measuring and HRR profiling with anovel CSF sequence [C]. International Conference on Radar,Shanghai, China, 2006: 1-5.[8]王俊, 张守宏, 刘宏伟. 步进频率信号长相参积累实现方法[J]. 西安电子科技大学学报, 2001, 28(3): 373-377.Wang Jun, Zhang Shou-hong, and Liu Hong-wei. Integraldetector using stepped frequency signals [J]. Jounal of XidianUniversity, 2001, 28(3): 373-377.[9]Yuan Hao-tian, Cheng Zhen, and Wen Shu-liang, et al.. Studyon radar target imaging and velocity measurementsimultaneously based on step frequency waveforms [C]. Asianand Pacific Conference on Synthetic Aperture Radar,Huangshan, China, 2007: 404-407.[10]Rife D C and Boorstyn R R. Single tone parameterestimation from discrete-time observations [J]. IEEE Trans.on Inform. Theory, 1974, IT-20(5): 591-598.[11]Kay S. A fast and accurate single frequency estimator [J].IEEE Trans. on Acoust., Speech, Signal Process.1989, 37(12):1987-1990

施引文献

资源附件(0)

访问统计