In the process of satellite imaging of mission planning,Angle between the satellite camera and the sun vector must be calculated accurately for ground imaging correctly.According to the above problem,a method for calculating the high-precision sun angle in the satellite body coordinate system based on VSOP theory is proposed.Through simulation experiment,it is found that the maxi-mum angle error of the solar angle calculation method is less than 0.15°in one satellite revisit orbit cycle.The experiment proves that the calculation method can accurately compute the solar azimuth of orbiting satellite,and can effectively guide the shooting angle of satellite camera.
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