Automatic power control apparatus and control method for up link of satellite earth station

Abstract

The invention discloses an automatic power control device for an uplink of a satellite earth station and a control method thereof, belonging to the technical field of wireless network communication. The antenna of the invention is connected with an uplink power amplifying frequency conversion unit and a downlink frequency conversion low-noise unit by a feed source; the downlink frequency conversion low-noise unit is connected with a satellite beaconing receiver by a coaxial cable; the satellite beaconing receiver is connected with a signal attenuation controller by a control cable; the signal attenuation controller is connected with a satellite transmitter and the uplink power amplifying frequency conversion unit by the coaxial cables. The invention solves the interference of environment factors on a satellite signal link and achieves the goals of automatically controlling the power and resisting interference by increasing and decreasing the amplified intensity of the signals of a power amplifying control unit.

Description

technical field [0001] The invention relates to a satellite earth station uplink automatic power control device and method, in particular to a control method for controlling transmission power based on the intensity of received satellite beacon signals, and the invention belongs to the technical field of wireless network communication. Background technique [0002] There are many factors that are subject to interference in satellite communications, including climate, rainfall, clouds, air temperature, etc., which will cause interference to the satellite communication link; the most influential factor is rainfall, and the satellite signal attenuation caused by rainfall is called rain attenuation; and Interference from environmental factors will affect the transmission quality of communication signals, which are specifically reflected in the application layer as packet loss in data transmission, discontinuous video transmission, and distorted voice sequence, which may even lead...

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Problems solved by technology

[0002] There are many factors that are subject to interference in satellite communications, including climate, rainfall, clouds, air temperature, etc., which will cause interference to the satellite communication link; the most influential factor is rainfall, and the satellite signal attenuation caused by rainfall is called rain attenuation; and Interference from environmental factors will affect the transmission quality of communication signals, which are specifically reflected in the application layer as packet loss in data transmission, discontinuous video transmission, and distorted voice sequence, which may even lead to the interruption of normal communication; therefore, the technical field of satellite communication In particular, there is an urgent need for a technical method that can resist interference caused by the natural environment and resist interference such as rain attenuation

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