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Method for detecting man-made interference

A kind of interference detection, artificial technology, applied in the field of interference detection, can solve the problem of difficulty in parsing the received signal, inability to parse, etc., to achieve the effect of interference detection

Inactive Publication Date: 2012-05-02
QUECLINK WIRELESS SOLUTIONS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the CDMA system needs to know the spreading code structure, otherwise it is impossible to resolve the useful signal whose power spectral density may be lower than the noise power
In addition, for a system with a complex structure of the received signal, or when the received signal itself is encrypted, it will become very difficult to analyze the received signal through a self-made system

Method used

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  • Method for detecting man-made interference
  • Method for detecting man-made interference
  • Method for detecting man-made interference

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Embodiment 1

[0034] Such as image 3 As shown, the present invention provides a method for man-made interference detection, including a detection stage and a confirmation stage;

[0035] The detection phase includes the following steps:

[0036] (1) start operation;

[0037] (2) Parameter initialization, setting the signal strength threshold;

[0038] (3) Signal strength detection;

[0039] (4) Compare the range of change with the set signal strength threshold, and judge whether it exceeds, if so, perform step (5), if not, then perform step (3);

[0040] The detection phase includes the following steps:

[0041] (5) Delayed waiting;

[0042] (6) Judging whether the base station information BSIC can be decoded, if yes, then return to step (2), if not, then confirm that it is signal interference.

[0043] The signal strength detection in the step (3) adopts the basic GSM antenna and radio frequency circuit serving the system GSM protocol.

[0044] The delay waiting time in the step (5...

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Abstract

The invention discloses a method for detecting man-made interference. The method comprises a detecting stage and a determining stage, wherein the detecting stage comprises the following steps of: (1) starting to run; (2) initializing parameters and setting a signal intensity threshold value; (3) detecting the signal intensity; and (4) comparing the change amplitude with the set signal intensity threshold value, judging whether the change amplitude is greater than the set signal intensity threshold value, and if so, executing the step (5), otherwise, executing the step (3). The determining stage comprises the following steps of: (5) waiting for delay time; and (6) judging whether a base station identity code (BSIC) of base station information can be decoded, and if so, returning to the step (2), otherwise, determining that the signal is the man-made interference. By the utilizing method for detecting the man-made interference, a function of detecting the interference can be realized in the existing software and hardware framework.

Description

technical field [0001] The invention relates to an interference detection method, in particular to a man-made interference detection method. Background technique [0002] The existing jamming detection method mainly uses the receiver to actively initiate channel scanning, and determines whether there is jamming according to the scanned channel parameter characteristics. [0003] The first one is man-made interference detection such as Enfora. First, the receiver actively initiates scanning of each communication channel in the communication frequency band, and judges whether the value of the channel characteristic of the detected signal power exceeds the limit value. When it exceeds the limit value, then Determine that this channel is interfered, and record this channel; after scanning each channel, according to all the recorded interference channels, avoid using these channels during communication, the detection process is as follows figure 1 shown. [0004] In addition, T...

Claims

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Application Information

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IPC IPC(8): H04B17/00
Inventor 刘冬洪方绍
Owner QUECLINK WIRELESS SOLUTIONS
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