| 宽带变多通道窄带信号检测高速目标算法 |
| |
| 引用本文： | 史小斌,顾红,苏卫民.宽带变多通道窄带信号检测高速目标算法[J].电波科学学报,2016,31(4):647-653. |
| |
| 作者姓名： | 史小斌 顾红 苏卫民 |
| |
| 作者单位： | 1.南京理工大学电子工程与光电技术学院, 南京 210094 |
| |
| 基金项目： | 国家自然科学基金(61471198)，中国航天科技集团公司航天科技创新基金(CASC04-02) |
| |
| 摘 要： | 高速目标的宽带信号回波产生的目标距离走动会导致传统动目标检测相参积累信噪比损失较大. Keystone变换以及相关改进算法虽然能够校正目标距离走动, 但该类算法需要预先估计目标较为精确的多普勒速度, 难于应用到实际工程中.文中采用一种宽带线性调频信号变多通道窄带信号处理方法, 在没有目标速度先验知识的情况下, 能够对高速目标回波信号能量进行有效积累, 从而提高目标检测性能.给出了算法框图, 经仿真验证该方法有效.
|
| 关 键 词： | 宽带线性调频雷达 高速运动目标 距离走动 动目标检测 |
| 收稿时间： | 2015-09-15 |
High speed targets detection algorithm based on multichannel narrow-band signal by wide-band signal decomposed |
| |
| Affiliation: | 1.Nanjing University of Science and Technology School of Electronic and Optical Engineering, Nanjing 210094, China2.Xi'an Electronic Engineering Research Institute, Xi'an 710100, China |
| |
| Abstract: | The target range migration may decrease the performance of the conventional moving target detection(MTD) coherent integration, which means that the accumulation time is restrained by target motion. The Keystone transform can correct target range migration, but it need to accurately estimate the target velocity, which is difficult to satisfy. In this paper, an algorithm of the wide-band linear frequency modulation signal decomposed into narrow-band multichannel signal to detect high speed targets is present, which does not require prior knowledge of the speed of high-speed moving target and can improves the wideband radar performance of detection of high speed target. The simulation results demonstrate the availability of the proposed method. |
| |
| Keywords: | wide-band LFM radar high-speed moving target rang migration MTD |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《电波科学学报》浏览原始摘要信息 |
|
点击此处可从《电波科学学报》下载全文 |
|
