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双载频步进频率雷达精确速度测量方法
引用本文:曹宇飞, 屈晓光, 黄培康. 双载频步进频率雷达精确速度测量方法[J]. 电子与信息学报, 2009, 31(5): 1113-1116. doi: 10.3724/SP.J.1146.2008.00296
作者姓名:曹宇飞  屈晓光  黄培康
作者单位:中国航天科工集团第二研究院23所,北京,100854;中国航天科工集团第二研究院23所,北京,100854;中国航天科工集团第二研究院23所,北京,100854
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。

关 键 词:雷达  步进频率  共轭法  双载频  高精度速度测量
收稿时间:2008-03-17
修稿时间:2008-12-15

Precise Velocity Measurement Approach in Dual-Carrier-Frequency Stepped-Frequency Radar
Cao Yu-fei, Qu Xiao-guang, Huang Pei-kang. Precise Velocity Measurement Approach in Dual-Carrier-Frequency Stepped-Frequency Radar[J]. Journal of Electronics & Information Technology, 2009, 31(5): 1113-1116. doi: 10.3724/SP.J.1146.2008.00296
Authors:Cao Yu-fei  Qu Xiao-guang  Huang Pei-kang
Affiliation:Cao Yu-fei Qu Xiao-guang Huang Pei-kang
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.
Keywords:Radar  Stepped frequency  Conjugation method  Dual carrier frequency  Precise velocity measurement
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