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Tunnel-passing rapid satellite alignment method and system for vehicle-mounted 'communication in motion'

A tunnel-passing and mobile communication technology, applied in the field of satellite communication, can solve the problems of tunnel reconnection and disconnection, and achieve the effects of improving sensitivity and practicability, shortening recovery time, and correcting gyro drift

Inactive Publication Date: 2019-07-12
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: aiming at the problems existing in the prior art, the present invention provides a fast tunnel alignment method and system for vehicle-mounted "communication in motion", which solves the problem of in-vehicle satellite communication system links The tunnel is disconnected, and the problem of being unable to reconnect after leaving the tunnel for a long time

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  • Tunnel-passing rapid satellite alignment method and system for vehicle-mounted 'communication in motion'

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Embodiment Construction

[0025] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0026] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0027] The present invention uses satellite position information, vehicle position information, GPS star number jump signal, inertial navigation system navigation information, satellite beacon signal, AGC level signal, inertial navigation drift correction strategy, etc., to invent a vehicle-mounted "dynamic The method and system for fast alignment through tunnels of Zhongtong can resume alignment within 1-2 seconds after the vehicle passes through the tunnel, which effectively improves the real-time c...

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Abstract

The invention discloses a tunnel-crossing rapid satellite alignment method and system for vehicle-mounted communication in motion. The method comprises the following steps of: detecting the number ofGPS effective satellites, when it is detected that the number of the GPS effective satellites is suddenly reduced, sending a 'kick reduction' signal, switching an antenna control mode from AGC beaconlevel tracking to inertial navigation locking, controlling the orientation of the antenna to be aligned with the direction of the satellite before the number of GPS effective satellites is suddenly reduced, and locking the pitch angle and the polarization angle of the antenna to be angles before the number of the GPS effective satellites is suddenly reduced; when it is detected that the number ofthe effective GPS satellites is increased suddenly, sending a 'kick increasing' signal, and switching the antenna control mode from inertial navigation locking to AGC beacon level tracking. Accordingto the method, the blank that the vehicle-mounted 'communication in motion' system does not have a rapid satellite alignment strategy when passing through a tunnel is filled, and the sensitivity andpracticability of the vehicle-mounted 'communication in motion' system in a multi-tunnel mountain area section are improved.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to a method and system for fast satellite alignment through a tunnel for vehicle-mounted "communication in motion". Background technique [0002] In recent years, with the continuous development of satellite communication technology, the "Mobile Communication" satellite communication technology has also made great progress. The vehicle-mounted "Mobile Communication" system uses an autonomous tracking method to track satellites. The satellite communication covers a large area and has strong anti-interference capabilities. , line stability, high flexibility, high sensitivity, and strong environmental adaptability, etc., are more and more used in the field of emergency communications to deal with various emergencies. Especially in recent years in the central and western regions of the motherland in earthquake relief, flood fighting and emergency rescue, and response to violence a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H01Q3/08
CPCH01Q3/08H04B7/18519
Inventor 魏伟官涛王海龙高平刘红秀何冰刘同占赵阳缪赟晨钟顺林樊星
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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