| 跨距离门目标的时频积累及检测方法研究 |
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| 引用本文： | 李 品,刘振星,黄 健. 跨距离门目标的时频积累及检测方法研究[J]. 现代雷达, 2012, 34(8): 52-54 |
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| 作者姓名： | 李 品 刘振星 黄 健 |
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| 作者单位： | 1. 南京电子技术研究所,南京,210039
2. 北京遥测技术研究所,北京,100076 |
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| 摘 要： | 跨距离门目标的回波积累检测是雷达系统性能的重要指标之一。文中首先分析了运动目标的回波模型,并利用时频方法,完成目标在距离门内的相参积累,然后距离门间通过时频图的二值化处理,利用时频二值图的线性映射实现非相参积累,实现跨距离门目标的积累检测。该方法不仅避免了传统分段检测方法的距离包络对齐问题,也不受多普勒速度模糊的影响,对目标回波信噪比要求较低,具有一定的工程价值。最后利用仿真验证了该方法的有效性,实现了跨距离门目标的有效积累和检测。
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| 关 键 词： | 目标检测 距离走动 时频分析 |
A Study on Hybrid Integration and Detection for RangeMigration Target Based on Time-frequency Method |
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| LI Pin,LIU Zhen-xing and HUANG Jian. A Study on Hybrid Integration and Detection for RangeMigration Target Based on Time-frequency Method[J]. Modern Radar, 2012, 34(8): 52-54 |
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| Authors: | LI Pin LIU Zhen-xing HUANG Jian |
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| Affiliation: | 1(1.Nanjing Research Institute of Electronics Technology,Nanjing 210039,China)(2.Beijing Research Institute of Telemetry,Beijing 100076,China) |
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| Abstract: | The detection ability of range migration target is a key factor related to radar system.Based on time-frequency analysis method,coherent integration in range-gate is realized first in this paper,and then combined to binary time-frequency images,a range-migration target detection method is proposed.This method can not only avoid envelope compensation and Doppler ambiguity estimation,but also reduce SNR requirement.The simulation results show the efficiency of the method. |
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| Keywords: | target detection range migration time-frequency analysis |
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