The Calculation Method Based on the Observation Position of the Moon with High Precision Spatiotemporal Datum

Abstract

The high precision space time reference system is mainly used for space time foundation high precision modeling and calculation. Design in this paper, based on the space-time datum developed corresponding time benchmark and time system, coordinate system conversion and astrometry correction method, developed the basic algorithm library, include time system transformation, coordinate transformation and celestial bodies (stars and solar system objects) location calculation subroutine or function, and in a solar system objects, for example, in the imaginary observation position in the case of the moon, considering the gravity bending of the object, aberration and various disturbance factors, the calculation theory of the object position, and a simulation was carried out. This method can carry out high-precision modeling based on high-precision spatiotemporal datum, so as to improve the accuracy of geospatial information and provide theoretical basis for accurate geospatial information and other space applications such as space science and deep space exploration.