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低空慢速小目标探测与定位技术研究

3219    2017-01-12

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作者:李菠1, 孟立凡1, 李晶1, 刘春美2, 黄广炎3

作者单位:1. 中北大学 电子测试技术国防科技重点实验室, 山西 太原 030051;
2. 公安部第一研究所, 北京 100048;
3. 北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081


关键词:低慢小目标;城市环境;激光探测技术;微弱光电信号处理


摘要:

城市大型集会、活动中安保工作的一大主要任务是防止恐怖分子利用航模等低空慢速小型飞行器进行破坏活动,由于城市环境的复杂性以及低空慢速小目标(以下简称低慢小)的特殊性,像雷达等传统的探测方法很难准确探测定位。针对这一难题,设计基于激光探测技术的低慢小探测与定位系统。系统包含激光脉冲发射、雪崩光电二极管偏置、弱光信号处理和计时电路等主要结构。利用标准时基发生器对计时电路进行验证,采用线性拟合方法使时间测量的精度达到10-10量级。经过试验测试,该系统能够在近距离范围内对低慢小进行快速定位,0~100 m距离范围内测距误差为0.6 m;0~60 m高度范围内测高误差为0.6 m;0~35 km/h速度范围内测速误差为1.3 km/h。


Research on detecting and locating technology of LSS-UAV

LI Bo1, MENG Lifan1, LI Jing1, LIU Chunmei2, HUANG Guangyan3

1. National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan 030051, China;
2. The First Research Institute of Ministry of Public Security, Beijing 100048, China;
3. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

Abstract: How to put an end to the terrorist's destructive activities with the help of LSS-UAV, such as a model aircraft, more efficiency is the key point of our security task at the urban large gatherings or large-scale events. The traditional detection methods such as radar are very difficult to detect and locate the target accurately, due to the complexity of urban environment and the particularity of low altitude、slow speed、small Unmanned Aerial Vehicle(LSS-UAV in abbreviate).This paper studies LSS-UAV detection and positioning system based on laser detection technology. The main structures of the system include the laser pulse emission, the avalanche photodiode bias, the weak light signal processing, the timing circuit and so on. A standard base generator has been used to verify the timing circuit, and adopt the linear fitting method to make the accuracy of time measurement for 10-10. Experiments prove that the system is able to locate LSS-UAV accurately. In the range of 0-100 m distance, ranging measurement error is ±0.6 m; In the range of 0-60 m height, height measurement error is ±0.6 m; in the range of 0-35 km/h speed, velocity measurement error is ±1.3 km/h.

Keywords: LSS-UAV;urban environment;laser detection technology;weak photo-electricity signal processing

2016, 42(12): 64-69  收稿日期: 2016-02-20;收到修改稿日期: 2016-04-10

基金项目: 公安部预研项目(2015JZYYY01)

作者简介: 李菠(1990-),男,山东蒙阴县人,硕士研究生,专业方向为测试计量技术及仪器。

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