Anti-communication reconnaissance and interception method and device

Abstract

The invention relates to a method and a device for anti communication reconnaissance and interception, which can effectively reduce the risk of secret communication. Pseudo-random sequence is generated by a random sequence generator and then according to preset mapping relations between the pseudo-random sequence and the modes of modulation / demodulation, interlacing / de-interlacing and coding / decoding, a modulation / demodulation controller, an interlacing / de-interlacing controller and a coding / decoding controller obtain the modes of modulation / demodulation, interlacing / de-interlacing and coding / decoding according to the mapping relations to carry out the modulation / demodulation, interlacing / de-interlacing and coding / decoding. The realization of random modulation / demodulation, interlacing / de-interlacing and coding / decoding is based on the synchrocontrol of the random sequence generators of a receiver and a sender and is completed by an isochronous controller connected with the receiver and the sender. The isochronous controller reads the current pseudo-random sequence generating information of the pseudo-random sequence generator of the sender, and the isochronous controller sends the sequence start-up information in the pseudo-random sequence generating information to the pseudo-random sequence generator so as to ensure that the sender and the receiver generate the pseudo-randomsequence simultaneously.

Description

technical field [0001] The present invention relates to the technical field of secure mobile communication, more specifically to a method and device for resisting communication reconnaissance and interception in mobile communication. Background technique [0002] The communication countermeasure system includes the communication reconnaissance system and the countermeasure system. The communication reconnaissance system, in the absence of prior knowledge of the target signal, in order to monitor the communication content or interfere with the enemy's communication, first searches the wireless communication signal, extracts relevant information, and obtains effective information. Parameters, to identify friend or foe, information analysis and intelligence deciphering on the intercepted wireless signals. At present, the communication monitoring equipment in the communication investigation system has a variety of investigation methods, including signal detection, signal classif...

AI Technical Summary

Problems solved by technology

That is to say, due to the relatively fixed modulation and coding methods in the prior art, the other party's monitoring and countermeasure equipment can give full play to its detection and interference effectiveness, so the risk of confidential communication is relatively high

[0005] In addition, some communication systems use adaptive channel modulation and coding technology (AMC), because the starting point of using this technology is to adjust the modulation order and coding rate according to channel changes to improve the throughput of the system, while the modulation and coding methods The types are basically the same, only differing in the modulation order and coding rate, so this method is usually not effective against electronic detection and jamming

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