Channel adaptive selection method suitable for very high frequency radio device

Abstract

The invention discloses a channel adaptive selection method suitable for a VHF radio device, and the method comprises the following steps: step 1, evaluating the channel quality of all working channels of the VHF radio device of two communication parties, and respectively building channel quality evaluation lists in the two communication parties according to the evaluation result; step 2, optimally selecting an optimal channel considering two communication parties from channel quality evaluation lists respectively established by the two communication parties; and step 3, guiding the VHF radiodevices of two communication parties to skip to a specified optimal channel by utilizing the DSC guard channel of the VHF radio devices, thereby realizing the adaptive selection of the communication channels of the two communication parties. The method provided by the invention is simple in step, can realize automatic selection of the communication channel between two communication parties of theVHF radio device without hardware modification of the original VHF radio device, and greatly improves the communication quality of the two communication parties of the VHF radio device.

Description

technical field [0001] The invention belongs to the technical field of maritime VHF communication, and in particular relates to a channel adaptive selection method suitable for VHF radio devices. Background technique [0002] The VHF radio device is an essential product for ship communication and navigation serial equipment, and is an important part of the Global Maritime Distress and Safety System (GMDSS). It has two communication modes, G3E (FM) and G2B (DSC), and supports simplex / half-duplex communication. [0003] However, the available channel resources of high-frequency radio devices are less, only 88 channels, of which CH70 is a dedicated channel for DSC communication (that is, the on-duty channel), and CH29~CH59, CH75~CH76 are unusable channels, that is, there are only 54 actually available channel resources . In ports or other ship navigation areas, it often happens that multiple ships jointly seize the same channel for communication, resulting in interference and...

AI Technical Summary

Problems solved by technology

There are two main reasons for this: one is the use habits of the crew, most of them are used to using several fixed communication channels; the other is the equipment capacity, the VHF radio device does not have the channel adaptive selection technology, the communication parties must Agree on 1 to 2 communication channels, otherwise you need to keep trying to communicate in 54 available channels, which will greatly increase the communication establishment time

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