Uplink self-adaptive closed loop power control method for satellite communication system

Abstract

The invention discloses an uplink self-adaptive closed loop power control method, which is applied to a satellite communication system. The interference with a satellite signal link from the factors, such as environment is eliminated by a binary search increasing-based power control algorithm. A ground control center is introduced into the satellite communication system for analyzing the error rate of a signal; and the power amplification factor at the next moment is calculated by adopting the binary search increasing-based power control algorithm, and various interferences, such as surrounding and the like, are quickly and accurately sensed, so interference is eliminated by self-adaptive power control. The satellite communication system at least comprises a geostationary satellite, an earth station, and the ground control center; a signal carrier is transmitted between the earth station and a satellite; and the ground control center manages a plurality of adjacent earth stations and sends power control commands to the plurality of adjacent earth stations to eliminate the interference with the satellite signal link from the factors, such as environment and the like.

Description

technical field [0001] The invention relates to an uplink self-adaptive closed-loop power control method applied to a satellite communication system, in particular to a control method for controlling transmission power based on a bit error rate of a received satellite signal, and belongs to the technical field of satellite communication. Background technique [0002] Satellite communication is the radio communication carried out by multiple earth stations (including land, water surface and atmosphere) on the earth using artificial communication satellites in the air as relay stations. The communication satellite consists of several transponders, several antennas, position and attitude control, telemetry and command, and power supply subsystems. Its main function is to transmit signals from various earth stations. [0003] A number of phenomena can cause signal loss when transmitting through the Earth's atmosphere. These phenomena include: atmospheric absorption (gas effect)...

AI Technical Summary

Problems solved by technology

[0010] Technical problem: According to the above-mentioned factors that cause interference to the satellite signal link due to various factors in the natural environment, the present invention provides an uplink adaptive closed-loop power control method in a satellite communication system, which adopts a method based on binary search growth The power control algorithm solves the interference caused by the environment and other factors to the satellite signal link, and can achieve the purpose of adaptive control power anti-interference by controlling the multiple of power amplification

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