A Method of Obtaining the Scale of Space Objects Based on Photoelectric Observation

Abstract

The invention belongs to the field of foundation photoelectric observation and discloses a space object dimension acquisition method based on photoelectric observation. The method includes the steps of obtaining high-precision photometric information of a space object through observation; obtaining photometric calibration parameters through orbital calculation; performing photometric correction on the space object; calculating the dimension of the space object. The space object dimension acquisition method based on photoelectric observation overcomes the lack of observational capability on middle-orbit and high-orbit space objects in a radar method and is a method for acquiring the optical dimension of the middle-orbit and high-orbit space objects with an optical telescope system by obtaining the parameters of the optical scattering cross section indicating the dimension of the space object. Compared with a wireless method, the space object dimension acquisition method based on photoelectric observation can accurately obtain the dimension of the space object due to the fact that an optical band is longer than a radio band and not sensitive to edges and corners. The space object dimension acquisition method based on photoelectric observation can be rapidly popularized and applied to existing foundation photoelectric detection devices in China without hardware modification to form a certain capability of determining the dimension of the space object.

Description

technical field [0001] The invention belongs to the field of ground-based photoelectric observation, and relates to a method for acquiring the scale of a space object. Background technique [0002] Scale size is an important physical characteristic of space objects. In the world, the radar cross section (Radar cross section, RCS) is generally used to characterize the size of space objects. However, the radar observation band is relatively long, and the radar scattering cross section is related to many factors such as the target structure, the operating frequency of the radar, the polarization form of the incident field, the polarization form of the receiving antenna, and the attitude of space objects, and is sensitive to corners, which is easy to be detected in space. Large values ​​are formed at the corners of objects, which cannot well represent the real scale of space objects. At the same time, since the detection signal strength of radar is proportional to the fourth po...

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Problems solved by technology

However, the radar observation band is relatively long, and the radar scattering cross section is related to many factors such as the target structure, the operating frequency of the radar, the polarization form of the incident field, the polarization form of the receiving antenna, and the attitude of space objects, and is sensitive to corners, which is easy to be detected in space. Large values ​​are formed at the corners of objects, which cannot well represent the real scale of space objects

At the same time, since the detection signal strength of the radar is proportional to the fourth power of the distance, it is 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 measure space objects in medium and high orbits

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