| 基于Stretch处理的毫米波调频步进雷达信号处理技术研究 |
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| 引用本文： | 张忠传,牟善祥,徐光进,张劲东.基于Stretch处理的毫米波调频步进雷达信号处理技术研究[J].南京理工大学学报(自然科学版),2010,34(1). |
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| 作者姓名： | 张忠传 牟善祥 徐光进 张劲东 |
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| 作者单位： | 1. 南京理工大学,电子工程与光电技术学院,江苏,南京,210094;沈阳炮兵学院,电子系,辽宁,沈阳,110162
2. 南京理工大学,电子工程与光电技术学院,江苏,南京,210094 |
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| 摘 要： | 研究了毫米波调频步进雷达Stretch(去斜率)处理中快速傅里叶变换(FFT)点数和采样间隔的选择原则。针对大带宽信号对大距离窗口的观测,提出了基于二维FFT的调频步进雷达高分辨距离像合成方法,考虑到对目标运动的敏感性问题,提出了基于帧间脉冲多普勒的速度补偿方法。利用较少的子脉冲和较低的系统采样率,该方法可实现大带宽信号对大距离窗口内静止和运动目标的观测。仿真结果表明了该方法的有效性。
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| 关 键 词： | 去斜率 调频步进信号 速度补偿 距离高分辨 |
MMW Chirp-subpulse Stepped-frequency Radar Signal Processing Technology Based on Stretch |
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| ZHANG Zhong-chuan,MU Shan-xiang,XU Guang-jin,ZHANG Jin-dong.MMW Chirp-subpulse Stepped-frequency Radar Signal Processing Technology Based on Stretch[J].Journal of Nanjing University of Science and Technology(Nature Science),2010,34(1). |
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| Authors: | ZHANG Zhong-chuan MU Shan-xiang XU Guang-jin ZHANG Jin-dong |
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| Institution: | 1.School of Electronic Engineering and Optoelectronic Technology/a>;NUST/a>;Nanjing 210094/a>;China/a>;2.Department of Electronics/a>;Shenyang Artillery Academy/a>;Shenyang 110162/a>;China |
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| Abstract: | The stretch processing technology of MMW chirp-subpluse stepped-frequency radar is analyzed and the chosen criteria of Fast Fourier Transformation(FFT) size and sampling interval are given.Two dimensional FFT processing methods are proposed to synthesize the high resolution range profile for monitoring large range window using wideband signal.Considering the sensitivity of the target movement,a new motion compensation method based on pulsed Doppler between two continuous frames is investigated.By this metho... |
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| Keywords: | stretch chirp-subpulse stepped-frequency signals motion compensation high resolution |
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