Frequency-preset distributed frequency-hopping synchronizing method

Abstract

The invention discloses a frequency-preset distributed frequency-hopping synchronizing method. The method comprises two basic steps, namely synchronous establishment and synchronous maintenance of a hopping system. The step of synchronous establishment comprises three stages, namely initiation, primary network entry and final primary network entry of the frequency-hopping system. The step of synchronous maintenance comprises two operation rules, namely the way of determining and then stopping, and the way of presetting frequency, namely a given secret key determines a frequency-hopping table and determines a frequency-hopping sequence and an eigenfrequency sequence through a chaotic sequence; and the hopping system hops frequency according to the given frequency sequence, a frequency-hopping radio station hops frequency according to the eigenfrequency sequence, and synchronization information is issued through service frequency. The method has adaptive frequency-hopping function, is applied to a local area network frequency-hopping communication system consisting of N frequency-hopping radio stations, wherein N is more than or equal to 3. The frequency-hopping radio stations are required to have a full duplex working mode. Compared with the traditional frequency-hopping synchronizing method, the method has higher anti-jamming capability and anti-interception capability, and can realize information seamless connection and signal relay transmission.

Description

technical field [0001] The invention belongs to the technical field of frequency hopping communication, and relates to a frequency preset distributed frequency hopping synchronization method. technical background [0002] Frequency hopping communication has strong anti-jamming, anti-fading, anti-interception capabilities and multi-address networking capabilities. It was originally used in military communications and gradually extended to civilian fields. For example, GSM, HomeRF, Bluetooth, etc. have applied frequency hopping technology. Since the BLADES system of the U.S. Navy Sylvania began to adopt frequency hopping technology in 1963, Britain, France, Israel and other countries have successfully developed practical frequency hopping communication systems. The main military communication equipment. With the increasing complexity of the battlefield interference environment and the increasing frequency of civilian radio interference, higher requirements are placed on the s...

AI Technical Summary

Problems solved by technology

[0007] Although the various existing frequency hopping synchronization methods have different ways of achieving synchronization, they have two points in common: first, when synchronization is established, it needs to go through complex processing processes such as initial capture, synchronization identification, and synchronization tracking; Intermittent

The complex process of synchronous establishment and intermittent signal transmission greatly limit the flexibility, reliability and adaptability of the frequency hopping communication system to various complex communication environments, and cannot support the multi-user distributed network with the concept of modern network structure. frequency hopping communication system

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