Method for Sharing Radio Spectrum on Basis of Beam Constant Offset for Low-Orbit Communication Satellite System

This paper provides a method for sharing a radio spectrum with high-orbit communication satellites, which comprise a geosynchronous satellite and operate in a near-equatorial orbit, based on a beam constant offset, and a low-orbit communication satellite system. The method comprises: low-orbit communication satellites completing, near the South and North Poles and the equator, the conversion of a transmitting beam constant offset state, wherein before and after each implementation, beam offset directions are the opposite of each other, and the beam offset degree is a fixed constant. The low-orbit communication satellites near the equator all deflect towards the equator. During beam offset conversion near the North and South Poles, services are provided by beams of other low-orbit communication satellites in two other orbits, which are adjacent to each other, at both sides of the current orbit. And during the implementation of beam offset conversion near an ascending node and a descending node, beam coverage services are provided by adjacent low-orbit communication satellites located at the other side of the ascending node or the descending node in the same orbit.