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

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...

AI Technical Summary

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 communication frequency predicted by the detection system has poor applicability and low passability in the communication system caused by mutual separation, as well as the problems of high power, poor mobility, and electromagnetic environment pollution of the active detection method, and the low reliability of the passive detection method. Road coverage has blind spots

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