Method for sharing radio spectrum on basis of beam constant offset, and low-orbit communication satellite system

Abstract

Provided are a method for sharing a radio spectrum with high-orbit communication satellites, which comprise a geosynchronous satellite and operate in a near-equatorial orbit, on the basis of 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.