Light curve-based satellite body size calculation method

A calculation method and technology of light curve, which can be applied in the direction of calculation, use of optical devices, image data processing, etc., which can solve the problems of inability to express the specific dimensions of the length, width and height of the satellite, sensitivity to corners, and the length of the radar band.

Active Publication Date: 2018-11-23
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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Problems solved by technology

But there are some limitations. First, the radar has a long band, and the radar scattering cross section is related to many factors such as satellite structure, satellite attitude, radar operating frequency, incident field polarization, and receiving antenna polarization, and is sensitive to corners. , it is easy to form a large value at the corner of the satellite, which cannot well represent the real scale of the satellite
Secondly, since the strength of the

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  • Light curve-based satellite body size calculation method
  • Light curve-based satellite body size calculation method
  • Light curve-based satellite body size calculation method

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[0067] The technical scheme of the present invention will be further described below in conjunction with the drawings.

[0068] The method for acquiring satellite optical characteristics based on photoelectric detection of the present invention is divided into two parts: data acquisition and data processing. First, data acquisition is performed, which is mainly implemented in step 1.

[0069] Step 1: Observe and obtain high-precision satellite luminosity information

[0070] (1) Shooting auxiliary images for photometric calibration: background image, flat field image, standard star image

[0071] Observation test and shooting background images and flat field images

[0072] Select known bright stars for observation and test. After confirming that the telescope is pointing normally and the CCD is working normally, take background images and flat-field images.

[0073] Take standard star images

[0074] Select the LANDOLT star near the satellite sky area and take a standard star image.

[...

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Abstract

The invention belongs to the field of foundation optical observation, and discloses a light curve-based satellite body size calculation method. The method comprises the following steps of: carrying out observation to obtain high-precision satellite luminosity information; carrying out orbit calculation and attitude calculation to obtain a light visible relationship; carrying out observed data availability inspection; and carrying out satellite body size calculation. According to the method, the capability deficiency, for observing intermediate and high-orbit satellites, of radar ways is overcome; and a method for obtaining satellite body sizes by utilizing an optical telescope observation system is put forward so as to obtain length, width and height parameters. The method can be rapidly popularized and applied to existing foundation photoelectric detection equipment of the country and certain satellite body size determination capability can be formed without hardware changes.

Description

technical field [0001] The invention belongs to the field of ground-based photoelectric observation, and relates to a method for calculating the size of a satellite body. Background technique [0002] The size is an important physical parameter of the satellite. In addition to the body size data obtained from the design and construction, the others are obtained through various observations and measurements. The radar cross section (RCS) obtained by radar detection is generally used to characterize the satellite. the size of. But there are some limitations. First, the radar has a long band, and the radar scattering cross section is related to many factors such as satellite structure, satellite attitude, radar operating frequency, incident field polarization, and receiving antenna polarization, and is sensitive to corners. , it is easy to form a large value at the corner of the satellite, which cannot well represent the real scale of the satellite. Secondly, since the streng...

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Application Information

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IPC IPC(8): G06T7/62G01B11/02G01B11/06
CPCG01B11/02G01B11/0608G06T7/62
Inventor 王建峰张晓明李陶然葛亮姜晓军周婉曾显群邱鹏田健峰兀颖
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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