Maritime precision appraisal for ship-borne radar based on high-precision star sensor

Jing-ming GUO; Bing LIU; Xin HE; Tong-shuang ZHANG; Liang PAN; Hong-wei JIAO

doi:10.3788/OPE.20172507.1909

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Maritime precision appraisal for ship-borne radar based on high-precision star sensor

Information Sciences | 更新时间：2020-07-07

- Maritime precision appraisal for ship-borne radar based on high-precision star sensor
- Optics and Precision Engineering Vol. 25, Issue 7, Pages: 1909-1918(2017)
- 作者机构：
  
  1.中国卫星海上测控部, 江苏江阴 214431
  2.中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172507.1909
  CLC： TN911.73
- Received：22 April 2016，
  
  Accepted：15 July 2016，
  
  Published：25 July 2017
- 稿件说明：
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Jing-ming GUO, Bing LIU, Xin HE, et al. Maritime precision appraisal for ship-borne radar based on high-precision star sensor[J]. Optics and precision engineering, 2017, 25(7): 1909-1918.
DOI：

Jing-ming GUO, Bing LIU, Xin HE, et al. Maritime precision appraisal for ship-borne radar based on high-precision star sensor[J]. Optics and precision engineering, 2017, 25(7): 1909-1918. DOI： 10.3788/OPE.20172507.1909.

摘要

航天测量船海上航行时主要通过精度校飞进行雷达精度鉴定，针对其周期长、耗费大和组织协调困难的缺点，提出了一种采用高精度星敏感器与雷达捷联跟踪测量空间目标进行海上精度鉴定的方法。雷达在跟踪空间目标的同时，星敏感器实时拍摄天线指向附近星图。首先，星敏感器利用雷达输出的编码器角度计算视轴的初始指向，通过快速星图识别和目标定位获取天线地心坐标系精确指向；然后，经坐标变换到地平系，根据蒙气差模型修正地平系俯仰角，再经过船摇修正转换到甲板坐标系；最后，进行轴系误差及脱靶量修正，实现雷达指向精度鉴定。试验结果表明：利用该方法测量的船载雷达相对于星敏感器方位、俯仰随机残差优于50"，满足雷达精度鉴定要求，证明该方法的可行性。

Abstract

At the time of marine navigation for the astronautic measurement ship

it was mainly subject to radar precision appraisal through accuracy calibration flight; thus it has long period

large costs

hard organization and coordination

and other defects. By taking advantages of high-precision star sensor and radar strap-down to track and measure the space target

a kind of marine precision appraisal method was proposed. At the time of tracking space target by radar

the star sensor shoots the star map nearby the antenna pointing. Firstly

the star sensor calculated the initial pointing of the bore-sight by the angle of the encoder output by radar; through fast star map identification and target localization

the precision pointing of the geocentric coordinates system for the antenna was obtained; Then

it was transformed to the horizontal coordinate system from the coordinate; according to atmospheric refraction model

the pitch angle of the horizontal coordinate system was corrected; and it was transformed to the deck coordinate system through ship swing correction; Finally

the pointing precision evaluation of radar was realized through axial system error and miss distance correction. The experimental result shows that comparing with the star sensor

the azimuth and pitch angle random rest error of the ship-borne radar measured by using the method is superior to 50"

which meets the requirement of radar precision evaluation and shows the method is feasible.

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Keywords

references

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