| 一种改进的步进频率雷达信号的运动补偿研究 |
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| 引用本文： | 段宏,;王霞,;王蒙军. 一种改进的步进频率雷达信号的运动补偿研究[J]. 电子设计工程, 2014, 0(13): 136-139 |
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| 作者姓名： | 段宏, 王霞, 王蒙军 |
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| 作者单位： | [1]河北工业大学信息工程学院,天津300401; [2]63813部队,海南文昌571300 |
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| 摘 要： | 为解决步进频率雷达一维距离像失真和运动补偿的问题，提出了一种精确的速度估计方法。文中首先阐述了步进频率信号的改进原理及其处理方法，该方法先使用互相关FFT测速法对目标速度进行粗估计，然后再以最大脉组乘积求和为准则搜索精确速度，最后实现对运动目标的速度补偿从而得到精确的一维距离像。仿真结果表明，在信噪比为-4dB的时候仍能得到准确的结果，改进后的信号性能有了很明显的改善，一维距离像不会随目标的运动而产生失真，该运动补偿方法具有估计精度高、抗噪性能好的优点。
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| 关 键 词： | 步进频率 一维距离像 运动补偿 互相关函数 最大脉组乘积求和法 |
Study of a modified stepped-frequency radar signal and motion compensation |
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| Affiliation: | DUAN Hong, WANG Xia, WANG Meng-jun (1. School of lnformation ,Hebei University of Technology , Tianjin 300401 , China ; 2.63813 Unit , Wenchang 571300,China) |
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| Abstract: | A precise velocity estimation method is presented to solve range profile distortion and motion compensation from stepped-frequency radar. Firstly,the principle of the i-mproved and processed of stepped-frequency signal is expounded. which is the method of using cross correlate-on FFT velocimetry to estimate the target velocity roughly.Then the precise velocity is searched by the rule of the maximum burst multiplication summation.Finally, the speed compensation of the moving target are achieved to get preeiseone dimensional range profile.The simulation results prove that accurate result is sill/got when S-NR is 4dB,the performance of improved signal is obviously improved and the one dimensional range profile is distortionless with target motion.So the method has high-precision and advantages of anti-noise. |
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| Keywords: | stepped-frequency one dimensional range profile motion compensation correlation function maximum burst mul-tiplication summation |
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