Technical characteristics of strapdown image seeker guidance

ZHANG Yue; CHU Hai-rong

doi:10.3788/OPE.20142210.2825

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Technical characteristics of strapdown image seeker guidance

更新时间：2020-08-13

- Technical characteristics of strapdown image seeker guidance
- Optics and Precision Engineering Vol. 22, Issue 10, Pages: 2825-2831(2014)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20142210.2825
  CLC： TJ765.2
- Received：05 August 2013，
  
  Revised：22 September 2013，
  
  Published：25 October 2014
- 稿件说明：
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张跃, 储海荣,. 全捷联图像导引头制导的技术特点[J]. 光学精密工程, 2014,22(10): 2825-2831

ZHANG Yue, CHU Hai-rong,. Technical characteristics of strapdown image seeker guidance[J]. Editorial Office of Optics and Precision Engineering, 2014,22(10): 2825-2831
张跃, 储海荣,. 全捷联图像导引头制导的技术特点[J]. 光学精密工程, 2014,22(10): 2825-2831 DOI： 10.3788/OPE.20142210.2825.

ZHANG Yue, CHU Hai-rong,. Technical characteristics of strapdown image seeker guidance[J]. Editorial Office of Optics and Precision Engineering, 2014,22(10): 2825-2831 DOI： 10.3788/OPE.20142210.2825.

摘要

分析了平台式导引头的技术特点与要求

对捷联式导引头视线角提取方法、刻度因数及精度测试方法、制导系统结构等进行了研究.首先

建立了全捷联光学导引头的数学模型

提出了视线角提取方法;接着

分析了全捷联导引头刻度因数的特性及其测试方法

并利用稳态卡尔曼滤波器对体视线角进行滤波;最后

利用"姿态+过载"驾驶仪

结合"近似积分比例导引"进行全捷联导引头的制导与控制系统仿真实验.测试与仿真实验显示:全捷联导引头视场角大于0.289°时的刻度因数误差小于7%

符合刻度因数理论计算结果;0.0056°的分辨率小于一个周期内的体视线角平均变化量0.011°

满足采样更新的要求

可实现末制导1 m的打击精度.实验结果表明大面阵和高分辨率是全捷联图像导引头制导应用的重要手段.

Abstract

Technical characteristics and specifications of a platform seeker were analyzed

and the Line of Sight (LOS)angle

the test methods of scale factor and accuracy

and the guidance system structure of a strapdown seeker were researched. First

the strapdown optical seeker model was established and an extraction method for the angle of LOS was proposed based on the technical characteristics of the platform seeker. Then

the characteristics and test methods of the scale factor for the strapdown seeker were analyzed

and a steady-state Kalman filter was used to filter the angle of Body LOS(BLOS). Finally

the "attitude + overload" autopilot combined with "integral approximation proportional guidance" were used to simulate strapdown seeker guidance and its control system . Test and simulation results show that when the angle of BLOS for strapdown seeker is greater than 0.289 °

the scale factor error is less than 7%

which meets the scale factor calculation results. Moreover

the strapdown seeker with the resolution of 0.0056 ° was less than the average variation of angle of BLOS to be 0.011°in one cycle

which meets the sampling update request and achieves the combating precision of 1 m of terminal guidance. These results demonstrate that large area array and high-resolution is an important guidance means of strapdown image seekers.

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Keywords

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