Method for avoiding co-channel interference of polar orbit constellation by using phased array beam reconstruction

Abstract

A method for avoiding co-channel interference of a polar orbit constellation by using phased array beam reconstruction, including: calculating an average coverage multiplicity at different latitudes;determining a minimum average coverage multiplicity that ensures continuous coverage conditions; according to a polar orbit constellation operation law and a satellite beam strategy, calculating a maximum average coverage multiplicity of a satellite on which overlapping of same frequency beams does not occur; according to a latitude range in which the satellite is operating, determining a ground coverage beam used by the satellite in different latitude ranges; and according to the determined ground coverage beam used by the satellite in different beam ranges, generating a control strategy thatis on the ground coverage beam and that is performed by a phased array antenna during satellite operation, and automatically performing, by the polar orbit constellation, beam control of the phased array antenna according to a latitude of a sub-satellite point of the satellite and in accordance with the control strategy that is on the ground coverage beam and that is performed by the phased arrayantenna, so that overlapping of the same frequency beams does not occur in a high latitude area under the condition of ensuring continuous coverage, thereby avoiding the co-channel interference between the same frequency beams.

Description

technical field [0001] The invention relates to a method for avoiding co-frequency interference of polar-orbit constellations by using phased array beam reconstruction, that is, a beam control method for avoiding co-frequency interference in high-latitude areas by using phased-array antenna reconstruction, which belongs to polar-orbit constellation bipolar areas The technical field of co-channel interference avoidance. Background technique [0002] With the development of satellite technology, the demand for high-speed network access services around the world continues to grow. The use of polar orbit constellations to achieve global communication coverage and Internet access services is a key development direction in the field of satellite communications in the future. The polar-orbit constellation is the most economical constellation (with the least number of constellation satellites) to meet global coverage under low orbit altitude conditions, so it is widely used in the ...

AI Technical Summary

Problems solved by technology

However, the use of the traditional beam switch strategy will cause the satellite beam switch to be too frequent, which is not conducive to the use of phased array antennas.

At the same time, the coverage area and service time of different satellites are different, resulting in different energy consumption of different satellites in polar orbit constellations, which increases the difficulty of designing power balance strategies for polar orbit constellation satellites

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