Title:
SPACE DEBRIS OBSERVATION METHOD BASED ON ALTERNATION OF DIFFERENT EXPOSURE TIMES OF CCD CAMERA
Document Type and Number:
WIPO Patent Application WO/2021/036565
Kind Code:
A1
Abstract:
Disclosed in the present invention is a space debris observation method based on alternation of different exposure times of a CCD camera. A CCD camera is controlled to consecutively perform alternate acquisition of short exposure images and long exposure images according to given exposure times; detection and astronomical positioning of low, medium and high orbit space debris are achieved by processing odd-frame short exposure images; detection of medium and high orbit space debris is achieved by processing even-frame long exposure images, and astronomical positioning of medium and high orbit debris detected in a current frame is achieved by using negative film model coefficients of adjacent odd-frame images; moreover, in a search observation mode, precise astronomical positioning of low, medium and high orbit space debris is achieved by means of a multipoint adjustment method and the negative film model coefficients of adjacent odd frames. The present invention can achieve simultaneous detection and precise astronomical positioning of all-orbit space debris, thereby improving observation efficiency of an observation device and guaranteeing detection precision of the observation device for all-orbit space debris.
Inventors:
ZHANG XIAOXIANG (CN)
GAO XIN (CN)
LI XIYU (CN)
GAO XIN (CN)
LI XIYU (CN)
Application Number:
PCT/CN2020/102314
Publication Date:
March 04, 2021
Filing Date:
July 16, 2020
Export Citation:
Assignee:
PURPLE MOUNTAIN OBSERVATORY CHINESE ACAD OF SCIENCES (CN)
International Classes:
G06K9/00
Foreign References:
| CN110399866A | 2019-11-01 | |||
| CN102494674A | 2012-06-13 | |||
| EP1168003B1 | 2009-05-27 |
Other References:
ZHANG XIAO-XIANG, ZHAO JIN-YU , JIA JIAN-LU, WU QING-LIN, LU YAO, GAO RUO-CHENG : "Study on the effect of rolling shutter sCMOS camera on space debris observation", OPTICS AND PRECISION ENGINEERING, vol. 26, no. 06, 15 June 2018 (2018-06-15), pages 1441 - 1449, XP009526383, ISSN: 1004-924X, DOI: 10.3788/OPE.20182606.1441
Attorney, Agent or Firm:
NANJING ZHONGSHAN PATENT AGENT CO., LTD. (CN)
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