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Interference signal source monitoring method and device thereof

A technique for interfering with signals and signals, applied in the field of monitoring of sources of interfering signals

Inactive Publication Date: 2009-09-09
国家无线电监测中心
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a monitoring method and device for an interference signal source, so as to solve the problem of monitoring the interference source when the weak interference signal cannot be distinguished on the spectrum analyzer

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  • Interference signal source monitoring method and device thereof
  • Interference signal source monitoring method and device thereof
  • Interference signal source monitoring method and device thereof

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0018] When the spectrum of the interference signal is so weak that it cannot be distinguished on the spectrum analyzer, it is impossible to judge whether the interference signal exists by using the traditional spectrum analyzer. To solve this problem, in the embodiment of the present invention, the existence of a weak interference signal is judged by using the superposition of the autocorrelation of the interference signal (for example, the interference signal whose spectrum is lower than the noise floor of the spectrum analyzer by more than 30dB) accumulated in time. The theoretical analysis ...

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Abstract

The invention provides an interference signal source monitoring method and a device thereof. In the method, ground signals and emission signals of satellite frequency are received; power spectrums corresponding to relevant functions of the received ground signals and the satellite emission signals are worked out; whether the spectrums have peak value is monitored, and if yes, the interference signal source existence is confirmed. The interference signal source monitoring method and the device thereof can successfully monitor weak interference signals.

Description

technical field [0001] The invention relates to the field of wireless signal monitoring, in particular to a method and system for monitoring interference signal sources. Background technique [0002] At present, interference complaints often appear in aviation frequency bands, satellite frequency bands, etc. The commonly used monitoring and positioning method for interference signals is: generally, a specific positioning system is used to monitor the signal to find out the approximate range of the interference source, and then use a spectrum analyzer to observe the spectrum of the monitored signal in a specific frequency band. Judgment of spectrum shape to judge whether there is an interference signal source and its signal type. However, when the power of the interfering signal is extremely small or even lower than the noise floor of the spectrum analysis, it cannot be distinguished on the spectrum analyzer, and the interfering signal is completely buried, but it still has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R23/16G01S5/12
Inventor 李景春黄嘉谭海峰方箭牛刚刘海洋
Owner 国家无线电监测中心