| 基于相位差分的雷达信号参数估计方法 |
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| 引用本文： | 赵洋,钱卫平,郭军海,赵华.基于相位差分的雷达信号参数估计方法[J].飞行器测控学报,2016,35(1):28-32. |
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| 作者姓名： | 赵洋 钱卫平 郭军海 赵华 |
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| 作者单位： | 北京跟踪与通信技术研究所 北京·100094 |
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| 摘 要： | 由于接收信号长度有限而存在频率离散化采样的限制,FFT(Fast Fourier Transform,快速傅里叶变换)对雷达信号频率的估计精度会降低。基于相位差分的频率估计方法可以对这一偏差进行估计,从而减小FFT的估计误差。尝试将该方法应用于LFM(Linear Frequency Modulated,线性调频)信号带宽的估计问题,并对此进行了仿真验证,结果证明该方法对雷达信号频率和带宽估计有一定的应用价值。
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| 关 键 词： | 脉冲雷达 信号处理 差分相位 频率估计 误差分析 信号带宽 |
Radar Signal Parameter Estimation Based on Differenced Phase |
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| ZHAO Yang,QIAN Weiping,GUO Junhai and ZHAO Hua.Radar Signal Parameter Estimation Based on Differenced Phase[J].Journal of Spacecraft TT&C Technology,2016,35(1):28-32. |
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| Authors: | ZHAO Yang QIAN Weiping GUO Junhai and ZHAO Hua |
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| Institution: | Beijing Institute of Tracking and Telecommunications Technology,Beijing Institute of Tracking and Telecommunications Technology,Beijing Institute of Tracking and Telecommunications Technology and Beijing Institute of Tracking and Telecommunications Technology |
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| Abstract: | Estimation of FFT (Fast Fourier Transform) of radar frequency is biased as a result of restrictions in resolution in discrete frequency domain.This paper introduces a method based on differenced phase and it decreases estimation error by figuring the biased residual frequency.The method is applied to estimate the bandwidth of a chirp signal, which has been simulated in the related section and it proved to be feasible in practical application. |
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| Keywords: | pulse radar signal processing differenced phase frequency estimation error analysis signal bandwidth |
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