Light curve-based satellite body size calculation method

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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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 radar detection signal is proportional to the fourth power of the distance, and will be affected by ground clutter and atmospheric loss, as well as its own power and operating wavelength limitations, it is generally difficult to use radar to achieve the measurement of medium and high orbit satellites

Third, the quantity obtained is the cross-sectional area and there are changes, which cannot represent the specific size of the satellite's length, width and height

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