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应用科学学报 ›› 2012, Vol. 30 ›› Issue (3): 294-.doi: 10.3969/j.issn.0255-8297.2012.03.013

• 论文 • 上一篇    下一篇

空中侦察系统中红外小目标的被动测距

付小宁1， 王洁1， 任保文2   

  1. 1. 西安电子科技大学机电工程学院，西安710071
    2. 西安电子科技大学理学院，西安710071
  • 收稿日期:2010-09-13 修回日期:2011-07-20 出版日期:2012-05-30 发布日期:2012-05-30
  • 通信作者: 付小宁，副教授，研究方向：光电探测、光电对抗、机动目标跟踪，E-mail: fuxn@mail.xidian.edu.cn
  • 作者简介:付小宁，副教授，研究方向：光电探测、光电对抗、机动目标跟踪，E-mail: fuxn@mail.xidian.edu.cn
  • 基金资助:

    国家自然科学基金(No. 60872136)；陕西省自然科学基础研究计划基金（No. 2011JM8002）资助

Passive Ranging of Small Infrared Target in Airborne Reconnaissance

FU Xiao-ning1, WANG Jie1, REN Bao-wen2   

  1. 1. School of Electromechanical Engineering, Xidian University, Xi’an 710071, China
    2. School of Science, Xidian University, Xi’an 710071, China
  • Received:2010-09-13 Revised:2011-07-20 Online:2012-05-30 Published:2012-05-30

PDF

992

被引次数

7

摘要：

针对光电对抗系统在红外小目标被动测距中的不足，提出了一种基于目标距离比和方向信息的被动测距算法. 建立了三维空间中的目标和探测器运动模型，通过数学分析构建估计红外小目标距离的一元二次方程，其参数由相邻采样时刻目标到探测器的距离比、探测器自身空间坐标、目标对探测器的方位角及高低角决定. 通过仿真实验和加噪分析验证了该方法的有效性. 文中所提方法表达简单，可避免分母接近于零的情况，适用于机载或弹载双波段红外探测器对小目标的距离估计.

关键词: 小目标, 红外, 被动测距, 双波段, 一元二次方程

Abstract:

 To overcome the problems in passive ranging of infrared small targets used in photoelectric countermeasure
systems, a passive ranging scheme is proposed based on the distance-ratio between two adjacent
sampling times and the direction information about the azimuth and pitch angles of the target. A model of
motion is build to describe the relative position between the observer and the target in a 3D space. With
this model, a quadratic equation is derived, whose parameters can be calculated by using the distance-ratio,
the 3D coordinates of the observer, and the azimuth and pitch angles of the target. The proposed method
has a simple form, and can avoid the occurrence of near-zero values in the denominator. The performance is
demonstrated by simulation. It is applicable to the estimation of the target distance with a dual-band infrared
detection system installed on an airborne or missile-borne platform.

Key words: small target, infrared, passive ranging, dual-band, quadratic equation

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