Control method of geosynchronous earth orbit (GEO) synthetic aperture radar (SAR) for covering all over China
A technology of synthetic aperture radar and geosynchronous orbit, which is applied in the direction of feedback control, radio wave reflection/re-radiation, and measurement devices. It can solve the problem that GEOSAR cannot cover the entire territory of China, improve coverage characteristics, and reduce energy consumption. , Easy engineering effect
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[0026] The method of the present invention will be further described in detail below in conjunction with the drawings and embodiments.
[0027] In this embodiment, the satellite where the SAR is located is operating in a geosynchronous orbit (GEO) with a small eccentricity, and its sub-satellite track is located in the middle of my country. The average orbit parameters are as follows: semi-major axis 42164.2Km; orbital inclination 53°; eccentricity 0.07 ; The perigee depression angle is 270°; the intersection longitude is 105°. Such as figure 1 Shown.
[0028] The control method of the geosynchronous orbit synthetic aperture radar covering the entire territory of China is adopted to complete the satellite's entire coverage of China. Among them, the simulation of the beam coverage area, the calculation of geometric parameters and the revisit time are carried out with the help of STK (Satellite Tool Kit, an aerospace simulation software developed by the American Analytical Graphics ...
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