| 变尺度离散Chirp-Fourier变换及其在弹载PD雷达检测中的应用 |
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| 引用本文： | 张军,付强,陈付彬.变尺度离散Chirp-Fourier变换及其在弹载PD雷达检测中的应用[J].国防科技大学学报,2002,24(6):37-41. |
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| 作者姓名： | 张军 付强 陈付彬 |
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| 作者单位： | 国防科技大学ATR实验室,湖南,长沙,410073 |
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| 摘 要： | 针对离散傅立叶变换(DFT)对加速运动目标进行检测时的局限性,结合离散Chirp Fourier变换(DCFT)和弹载脉冲多普勒雷达信号检测的具体背景,提出了一种基于FFT的变尺度离散Chirp Fourier变换(B DCFT),分析了它的性能。将它应用于雷达信号检测的应用背景形成了一种对线性调频信号的级次检测算法。理论分析和仿真试验表明该算法在运算量和检测性能方面均有一定的优势。
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| 关 键 词： | 脉冲多普勒雷达 检测 DFT DCFT B-DCFT 线性调频 |
| 文章编号： | 1001-2486(2002)06-0037-05 |
| 收稿时间： | 2002/6/19 0:00:00 |
| 修稿时间： | 2002年6月19日 |
Changing Scale Discrete Chirp-Fourier Transform and Its Application in Detecting Target Using Missile-borne PD Radar |
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| ZHANG Jun,FU Qiang and CHEN Fubin.Changing Scale Discrete Chirp-Fourier Transform and Its Application in Detecting Target Using Missile-borne PD Radar[J].Journal of National University of Defense Technology,2002,24(6):37-41. |
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| Authors: | ZHANG Jun FU Qiang and CHEN Fubin |
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| Affiliation: | ATR Lab, National Univ. of Defense Technology, Changsha 410073,China;ATR Lab, National Univ. of Defense Technology, Changsha 410073,China;ATR Lab, National Univ. of Defense Technology, Changsha 410073,China |
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| Abstract: | Aiming at the restriction of detecting the acclerating target using traditional DFT method,this paper is based on the discrete Chirp-Fourier transform and the real background in signal detection using missile-borne high-PRF pulsed Doppler radar.A transform naming changing scale discrete Chirp-Fourier transform is presented,and then the performance of the transform is analyzed.Finally,a new cascaded detection method is put forward for detecting the chirp signal using radar.The theoretics and the experiments demonstrates its effectiveness in performance. |
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| Keywords: | pulsed Doppler radar detection DFT DCFT B-DCFT chirp |
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