Signal monitoring interference method

Abstract

The invention discloses a signal monitoring interference method, and the method comprises the following steps: 1, scanning and receiving a wireless signal in a monitoring area, and performing frequency spectrum shift, AD conversion, digital down conversion, FIR filtering and extraction processing on the wireless signal in sequence to convert the wireless signal into an I / Q signal; 2, carrying outthe baseband processing on the I / Q signals to obtain frequency spectrum signals, and analyzing and obtaining whether suspicious wireless signals exist in a monitoring area or not; if the suspicious wireless signal exists, generating a corresponding interference signal according to the frequency of the suspicious wireless signal; 3, firstly performing up-conversion processing on the interference signal, then performing power amplification on the interference signal, and finally transmitting the interference signal after power amplification to a monitoring area for interference. According to theinvention, suspicious wireless signals in a use area can be effectively monitored, and frequency spectrum signals with corresponding frequencies are generated for interference, so the purpose of effectively protecting privacy is achieved.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a signal monitoring and interference method, which is mainly used for monitoring and interference of suspicious wireless signals such as eavesdropping and eavesdropping, and is suitable for use in homes, conference rooms, confidential places and other places. Background technique [0002] Today, with the rapid development of information technology, high-tech crimes such as stealing personal privacy and committing economic crimes using wireless technology also occur from time to time, and they are normalized, seriously threatening social stability, the interests and safety of important groups and the general public . For this reason, timely perception, effective detection, and continuous prevention and control of threats from wireless theft have become an urgent need for both the information security professional field and the general public. [0003] my country's wi...

AI Technical Summary

Problems solved by technology

[0003] my country's wireless signal anti-theft detection equipment and technical means are relatively backward, and there is no real product support for private needs, and there is no general equipment to protect the personal privacy of important personnel and even ordinary people.

The current method of detection and discovery of suspicious wireless signals is to use general-purpose detection equipment or imported special equipment for detection and discovery, but there are the following disadvantages: (1) Most of the general-purpose detection equipment is temporary and non-targeted inspection equipment, and the long-term work of the equipment is not considered in the design The performance requirements for monitoring, the test results often vary from person to person and from time to time, lacking in scientificity, continuity, and integrity

(2) Foreign special-purpose detection analyzers are mostly export-restricted products, which are strictly controlled by foreign governments and relevant departments

Although these devices can be obtained in a corner, there is often a risk of being blocked from the frequency band used for stealing

However, domestic equipment has not yet been replaced by stable and reliable special equipment

(3) The equipment involved in the above technologies is large in size and expensive, and cannot be deployed in large quantities. It is not easy to promote to personal privacy protection and use in small areas

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