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Space target identification method based on main focus large-field-of-view photoelectric telescope

A technology for optoelectronic telescopes and space targets, used in scene recognition, character and pattern recognition, image data processing, etc., can solve problems such as difficulty in closed-loop tracking, large real-time data volume, and inability to observe space targets, and achieve the goal of improving the degree of observation automation. Effect

Active Publication Date: 2020-03-17
中国科学院国家天文台长春人造卫星观测站
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Problems solved by technology

[0018] The present invention solves the problem that in the process of space target recognition in the existing space target recognition method, the closed-loop tracking method is difficult to cope with the huge amount of real-time data, it is difficult to meet the real-time requirements, and there is difficulty in closed-loop tracking, so that the main field of view cannot monitor the space for a long time. Observing the target, the space target cannot be identified, etc., and a space target identification method based on the main focus large field of view photoelectric telescope is provided

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  • Space target identification method based on main focus large-field-of-view photoelectric telescope

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specific Embodiment approach 1

[0045] Specific implementation mode 1. Combination Figure 1 to Figure 3 In this embodiment, the space target recognition method based on the main focus large-field photoelectric telescope is described, and the method includes the extrapolation of the servo state of the telescope and image processing and analysis. Achieved by the following steps:

[0046] 1. Extrapolation of the servo state of the telescope;

[0047] Since the catalog information of the angle and time when the space target transits is predicted, the program tracking method (that is, the open-loop tracking method) can be used to guide the telescope to observe.

[0048] The so-called program tracking party first uses the two-line root number to calculate the azimuth and altitude angle data required for the telescope to align with the space target, and then these data are loaded on the servo platform of the telescope to drive the telescope to move.

[0049] For space targets in low-Earth orbit, the time interval ...

specific Embodiment approach 2

[0099] Specific embodiment two, combine Figure 4 Describe this embodiment, this embodiment is the embodiment of the space object recognition method based on the main focus large field of view photoelectric telescope described in the specific embodiment one:

[0100] Telescope platform: 1.2m main focus large field of view photoelectric telescope;

[0101] Target number: 33105;

[0102]Observation time: January 17, 2019;

[0103] Data composition: a total of 24 frames of data;

[0104] Calculation results: All 24 frames of images have recognized space targets.

[0105] In this embodiment, the target number 33105 is the JASON2 satellite, which is a marine terrain satellite jointly developed by CNES and NASA, with a perigee altitude of 1305km, an apogee altitude of 1317km, and an orbital inclination of 66.04°. Since this satellite is a laser star, the astronomical positioning of the identified space target can be carried out, and the data and the data of the CPF (consolidated...

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Abstract

The invention discloses a space target identification method based on a main focus large-field-of-view photoelectric telescope, and relates to the technical field of star map identification, solving the problem that in the process of spatial target recognition, the existing spatial target recognition method adopts a closed-loop tracking mode, so that huge real-time data volume is difficult to dealwith by adopting, and real-time requirements are difficult to meet and closed-loop tracking difficulties exist, thus causing that the main view field cannot observe the space target for a long time and a space target cannot be identified and so on. According to the space target identification method based on a main focus large-field-of-view photoelectric telescope, the space target can be automatically and efficiently identified, and the capability application of target identification in the field of celestial body measurement is further perfected and developed, and meanwhile, a new thought and a theoretical basis are provided for exploring a point source target identification and tracking technology. The space target identification method based on a main focus large-field-of-view photoelectric telescope can be used for improving the 40cm precision measurement type foundation photoelectric telescope of the vintage station, can improve the observation automation degree of the system, can realize an unattended observation operation mode of the system, and has important practical application values.

Description

technical field [0001] The invention relates to a space target recognition method based on a main focus large field of view photoelectric telescope. Background technique [0002] The main focus large-field photoelectric telescope belongs to the ground-based photoelectric telescope. It has the characteristics of strong light power. A high-performance astronomical camera with a large target surface is installed at the main focus, which can observe and locate dim and small space objects. [0003] The larger the field of view of the telescope, the stronger the ability to gather light, and the more beneficial it is for space target search and tracking. As a result, both the astronomical location and arc length of the space object are increased, and orbital correlation tasks are relieved. [0004] Due to the large observation field of view of the main focus large field of view photoelectric telescope, and the need to increase the exposure time to improve the detection ability of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62G06T7/66
CPCG06T7/66G06T2207/10032G06V20/13G06F18/23Y02A90/10
Inventor 杨文波刘德龙李振伟
Owner 中国科学院国家天文台长春人造卫星观测站
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