High repetition rate laser ranging to space debris from Changchun Observatory

SONG Qing-li; LIANG Zhi-peng; DONG Xue; HAN Xing-wei; FAN Cun-bo

doi:10.3788/OPE.20162413.0175

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High repetition rate laser ranging to space debris from Changchun Observatory

更新时间：2020-08-13

- High repetition rate laser ranging to space debris from Changchun Observatory
- Optics and Precision Engineering Vol. 24, Issue 10s, Pages: 175-182(2016)
- 作者机构：
  
  中国科学院国家天文台长春人造卫星观测站,吉林长春,130117
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162413.0175
  CLC： P228.5
- Received：28 May 2016，
  
  Revised：13 June 2016，
  
  Published：14 November 2016
- 稿件说明：
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宋清丽, 梁智鹏, 董雪等. 长春站高重复频率空间碎片激光测距技术[J]. 光学精密工程, 2016,24(10s): 175-182

SONG Qing-li, LIANG Zhi-peng, DONG Xue etc. High repetition rate laser ranging to space debris from Changchun Observatory[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 175-182
宋清丽, 梁智鹏, 董雪等. 长春站高重复频率空间碎片激光测距技术[J]. 光学精密工程, 2016,24(10s): 175-182 DOI： 10.3788/OPE.20162413.0175.

SONG Qing-li, LIANG Zhi-peng, DONG Xue etc. High repetition rate laser ranging to space debris from Changchun Observatory[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 175-182 DOI： 10.3788/OPE.20162413.0175.

摘要

本文主要根据空间碎片运行速度快、预报精度差等特点，论述了高重复频率空间碎片激光测距的关键技术，通过采用高重复频率、高光束质量的激光器提高了激光输出功率密度。提出了回波指数概念，建立空间碎片观测目标数据库。利用光学视位置偏差信息，通过对数据实时拟合，修正预报距离偏差的参考值，提高探测成功率。在长春站60 cm激光测距系统上进行了可行性和有效性验证，在26个试验观测日内获得了233个不同空间碎片目标的466圈有效数据。对这些数据进行统计得到，观测目标距离在400~1800 km，其雷达散射截面（RCS）在0.9~26.1m

，测距精度约为1 m。该高重复频率空间碎片激光测距系统不仅可以获得有效的观测数据，而且大大提高了观测的成功率，观测数据可用于开展空间非合作目标测轨和定轨、精密编目以及其他科学应用研究。

Abstract

Based on the high running speed and poor forecast accuracy of space debris

the key technology for space debris laser ranging with high repetition rate was discussed

and the laser with high repetition rate and high beam quality was employed to improve the laser output power density. The concept of echo index was proposed and the observation target database of space debris was established. Then reference values f the forecast distance were corrected by fitting the data originated from the optical position deviation information

thus improving the success rate. The feasibility and effectiveness of such method were verified on the 60 cm laser ranging system in Changchun Railway Station. During the experimental observation period of 26 days

466 circles of data for 233 different space debris targets have been obtained. The data statistic shows that the radar cross section (RCS) is 0.9 m

~26.1 m

when the observation distance from the target is 400 km~1 800 km

with a ranging precision of approximately 1 m. Such space debris laser ranging system with high repetition rate can not only help obtain effective observation data

but can also improve the observation success rate. In addition

the observation data can be used for orbit measurement and orbit determination of non-cooperative space target

precise cataloging and other scientific application researches.

关键词

Keywords

references

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