A method for controlling communication of a multimode satellite communication terminal and a communication terminal

Abstract

The invention discloses a method for controlling communication of a multi-mode satellite communication terminal and a communication terminal. The multi-mode satellite communication terminal includes: a first antenna access line for accessing the first line antenna; a first antenna line detection circuit; A multi-mode switching control module; a channel selection circuit, used to connect the first antenna access line as a communication channel under the action of the multi-mode switching control module. In the embodiment of the present invention, the antenna access circuit can be selected as the communication channel based on the channel selection circuit according to the state of the antenna line, or the antenna access circuit can not be selected as the communication channel, so as to ensure the hardware channel or software channel to realize the channel selection circuit degrees of freedom.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a method for controlling communication of a multi-mode satellite communication terminal and a communication terminal. Background technique [0002] The satellite system uses satellites to provide users with positioning, navigation, surveying and mapping, monitoring, and timing services. Satellite positioning has the characteristics of full-time, all-weather, high-precision, continuous real-time navigation, positioning and timing, so it plays a vital role in economic development, social construction and management, scientific research, disaster assessment and prevention and control, and military fields. Its role is related to national defense security and all aspects of people's lives. At present, there are four global positioning satellite systems (GNSS) in the world: GPS (Global Positioning System) of the United States, GLONASS (Global Navigation Satellite Syste...

AI Technical Summary

Problems solved by technology

In the current actual mode, one antenna is connected to the main control module under a communication system, and the antenna connected to one interface is connected to the main control module to realize the communication, and finally depends on the only antenna to receive satellite positioning signals. Currently, most If a satellite communication terminal uses a passive antenna for satellite communication, and the passive antenna is easily limited by the length of the coaxial cable, the communication rate will be reduced or the communication will fail in a complex geographical environment; The antenna needs to be inserted into the active interface on the satellite communication terminal. If the interface on the entire active antenna is damaged or pulled out, the communication terminal will not be able to receive satellite communication signals based on the active antenna, and the active antenna depends on the active interface from the active interface. For power supply, it is also necessary to maintain good conductivity on the active antenna access line

[0004] The existing multi-mode satellite communication terminals are commonly found in dual-mode satellite communication terminals. figure 1 and figure 2 It shows a schematic structural diagram of a multi-mode satellite communication terminal. There are two types of satellite communication main control modules in this dual-mode satellite communication terminal, as well as antenna access circuits for each standard, and antenna connection circuits for each standard. The incoming line can be a dual-mode antenna access line, or two single-mode antenna access lines, that is, when each antenna is connected to a dual-mode satellite communication terminal, each antenna needs to meet the multi-mode The communication function requirements under the satellite communication terminal, there is no targeted technical solution in the prior art to overcome how to solve the problem of how to access the antenna or not when the antenna is connected in the mode of the antenna interface, and the multi-mode satellite communication involved in the prior art After the passive antenna in the terminal is fixedly connected, it cannot adapt to the possibility of re-connecting the antenna in a complex environment, and after the active antenna is connected to the multi-mode satellite communication terminal, it generally enters the working state directly, and cannot be combined The state of its line changes to achieve energy consumption control, which cannot reduce the electrical power supply loss of the receiver device in the non-working mode, that is, it cannot perform switching control for specific changes in the state of the antenna line. How to ensure that the multi-mode satellite communication terminal The communication control that can be applied to the multi-mode satellite communication system with antenna access or without access antenna also needs to be solved and overcome by the present invention

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