Time control pulse interval laser encoding and decoding method

Abstract

The invention belongs to the technical field of laser information, and discloses a time control pulse interval laser encoding and decoding method. An encoding end is timed by a Beidou timing module; absolute precise time is obtained; absolute precise integral second moments are taken as references, a demanded quantity of pulse time intervals at a current moment are generated once according to an encoding function; encoding pulse signals are generated at pre-generated time intervals by a timer; a pulse width is controlled; a decoding end obtains the absolute precise moment through the Beidou timing module; the absolute precise moment is synchronous with that of the encoding end; pulse receiving moments are generated according to an encoding function the same to the encoding function of the encoding end; and pulse matriculate wave gates are precisely controlled at the pulse receiving moments by the timer; therefore, the decoding is realized. The method provided by the invention is mainly featured by that the encoding pulse time intervals are different from one another and have no any rule and cycle; the quasi-random distribution encoding has relatively strong anti-decoding capability; the design is simple and is easy to realize; and the method is applicable to fields such as laser semi-active guidance, laser communication and laser radars.

Description

technical field [0001] The invention belongs to the field of laser information technology and relates to coding and decoding technology, in particular to a time-controlled pulse interval laser coding and code recognition method to solve the problem that the current laser coding method is easily cracked and identified. Background technique [0002] Laser coding and code recognition technology has a wide range of applications, such as laser semi-active guidance systems, laser communication systems, and laser radar systems. The problem of laser coding / code recognition for the integrated transceiver (encoding end and code recognition end integrated) system is relatively simple. After the laser pulse is sent, according to the system requirements, the pulse can be received at the precise synchronization point; [0003] The laser coding / code recognition problem of the transceiver split system is more difficult than that of the transceiver integrated system. The code recognition end...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the current traditional codes are easy to be identified and cracked, the present invention proposes a time-controlled pulse interval laser coding and code recognition method, also known as the laser pulse code and code recognition method

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