Optical domain pseudo code synchronization method, device and system based on microwave photon technology

Abstract

The invention relates to an optical domain pseudo code synchronization method, device and system based on a microwave photon technology, and the method comprises the steps: modulating a spread spectrum communication signal to a first path of laser after obtaining the first path of laser and a second path of laser of a laser source, and enabling the first path of laser to serve as a carrier signal; and meanwhile, a local oscillation optical frequency comb is generated by the second path of laser, and the local pseudo code sequence is regulated and controlled to the local oscillation optical frequency comb. And performing analog domain calculation on the carrier signal and the local oscillation optical frequency comb, and demodulating a calculation result to obtain a demodulated signal of the spread spectrum communication signal. On the basis, an optical domain pseudo code synchronization mode based on the microwave photon technology is provided, spread spectrum communication is met, meanwhile, the characteristics of a local oscillation optical frequency comb and analog domain calculation are combined, and the spread spectrum bandwidth, the synchronization speed and the communication hiding effect are considered.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method, device and system for synchronizing pseudocodes in optical domain based on microwave photonic technology. Background technique [0002] The rapid development of wireless communication technology has brought profound changes to the fields of military defense and civil technology, but wireless communication technology also faces a series of challenges and difficulties, such as communication security requirements, communication stability requirements and communication speed requirements. Among them, in order to effectively avoid the risk of wireless communication being interfered and intercepted by non-cooperating parties, high-reliability covert communication that takes into account high speed, anti-interference and covert transmission is crucial. [0003] In the anti-jamming covert communication, the direct sequence spread spectrum communication technology...

AI Technical Summary

Problems solved by technology

However, the traditional radio frequency communication system based on the pure electric domain is restricted by electronic devices and digital processing bottlenecks, resulting in limited operating frequency range, transmission signal bandwidth, anti-interference, and anti-interception capabilities.

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