Short wave area emergency mobile communication semi-blind frequency selection system and method thereof

A technology of mobile communication and frequency selection system, applied in transmission systems, transmission monitoring, electrical components, etc., can solve the problems of blind areas covered by links, low reliability of passive detection methods, high power of active detection methods, etc. inefficient effect

Inactive Publication Date: 2017-05-31
CHONGQING TELECOMMUNICATION INSTITUTE
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Problems solved by technology

[0009] This application provides a semi-blind frequency selection system and method for emergency mobile communication in short-wave areas to realize the integration of detection and communication, and combines active detection and passive detection to solve the problems caused by short-wave frequency detection systems and communication systems in the prior art. The c

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  • Short wave area emergency mobile communication semi-blind frequency selection system and method thereof
  • Short wave area emergency mobile communication semi-blind frequency selection system and method thereof
  • Short wave area emergency mobile communication semi-blind frequency selection system and method thereof

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Embodiment

[0037]A semi-blind frequency selection system for emergency mobile communication in the short-wave area, such as figure 1 As shown, it includes a shortwave radio station, a broadband shortwave receiving module and an information processing module, wherein the information processing module includes a passive monitoring acquisition prior scanning frequency unit, an active detection frequency optimization unit, a spectrum management unit, a database management unit, and an ITS propagation Model and channel access module, wherein, the broadband short-wave receiving module is connected with the passive monitoring acquisition prior scanning frequency unit to perform short-wave full-band scanning through a USB interface, and the passive monitoring acquisition prior scanning frequency unit is based on the The highest available frequency MUF and the lowest available frequency LUF provided by the above-mentioned ITS propagation model set threshold values ​​to eliminate sudden interferenc...

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Abstract

The present invention provides a short wave area emergency mobile communication semi-blind frequency selection system and a method thereof. From the perspective of detection of communication fusion, the method comprehensively uses the wideband passive monitor and low signal to noise ratio detection technologies. First, a priori scanning frequency in an optimal work frequency is acquired based on full range passive monitoring, so as to prevent electromagnetic pollution caused by full range scanning, so that a basis is provided for bidirectional detection based on existing narrow band short wave radio. Further, the priori frequency is sensed proactively based on a portable short wave radio so as to select preferred frequency. The problems of low communication performance and poor concealment of high-power independent detection are solved, and the method can help improve the short wave area emergency mobile communication in the complex environment.

Description

technical field [0001] The invention relates to the technical field of short-wave communication frequency prediction, in particular to a semi-blind frequency selection system and method for emergency mobile communication in short-wave areas. Background technique [0002] my country is a country where natural disasters occur frequently and frequently. Disasters such as earthquakes and floods occur from time to time, causing great losses to the national economy and people's lives and properties. Emergency communication is an important guarantee for the fast, efficient, safe and reliable operation of all aspects of emergency management such as prevention and preparation, monitoring and early warning, disposal and rescue, restoration and reconstruction. As an important means of regional emergency mobile communication, the short-wave near vertical incidence skywave (NearVertical Incidence Skywave, NVIS) communication can not be restricted by terrain conditions, and achieve full c...

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Application Information

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IPC IPC(8): H04B1/00H04B17/391H04B17/29
CPCH04B1/005H04B17/29H04B17/391
Inventor 李国军贾昕杰何世彪周晓娜李高峰张德平王雄胡明辉徐小飞
Owner CHONGQING TELECOMMUNICATION INSTITUTE
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