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Method and system for monitoring electromagnetic spectrum

A spectrum monitoring and electromagnetic technology, applied in the transmission system, transmission monitoring, electrical components, etc., can solve the problems of complex time domain methods, complex implementation schemes, unfavorable algorithm development and loading, etc., and achieve simplified implementation complexity, easy hardware implementation, The effect of flexible loadability

Inactive Publication Date: 2011-02-16
THE PLA INFORMATION ENG UNIV
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Problems solved by technology

Among them: the time-domain method needs to store a large number of time-domain signals, which puts great pressure on the storage and processing capabilities of the nodes, and most of the time-domain methods are relatively complicated, which is not suitable for small sensor nodes with limited energy; time-frequency The electromagnetic spectrum monitoring method used in the mixed domain generally uses the frequency domain method for signal detection, and uses the idea of ​​combining the time domain method and the frequency domain method for parameter estimation and modulation identification. On the one hand, this solution needs to store time domain signal samples , on the other hand, the back and forth conversion of time-frequency domain data is required in the processing process, and the implementation scheme is complicated, which is not conducive to the further development and loading of the algorithm, so it is not suitable for implementation on sensor nodes

Method used

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  • Method and system for monitoring electromagnetic spectrum
  • Method and system for monitoring electromagnetic spectrum
  • Method and system for monitoring electromagnetic spectrum

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Embodiment Construction

[0048] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0049] like figure 1 Shown is the flowchart of the electromagnetic spectrum monitoring method of the embodiment of the present invention, comprising the following steps:

[0050] Step 101, acquire a time-domain signal output by an intermediate frequency receiver.

[0051] It is assumed that the signal received by the IF receiver has completed steps such as analog-to-digital conversion, down-conversion, down-decimation, and preprocessing, and the signal after these processes is a band-pass digital signal with a lower frequency and a lower sampling rate. in:

[0052] Analog-to-digital conversion refers to the conversion of analog signals into digital signals;

[0053] Down-conversion processing refers to the pr...

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Abstract

The invention discloses a method and system for monitoring an electromagnetic spectrum, wherein the method comprises the following steps of: obtaining a time-domain signal output by an intermediate-frequency receiver; and converting the time-domain signal into a frequency-domain signal; computing each characteristic cross section of the cyclic spectrum of the frequency-domain signal; and monitoring the electromagnetic spectrum by utilizing the conversion result of the signal and / or each characteristic cross section of the cyclic spectrum obtained through computation. The invention can be utilized for completely realizing the monitoring processing for the electromagnetic spectrum in a frequency domain and can be simply and effectively applied to sensor nodes.

Description

technical field [0001] The invention relates to the technical field of electromagnetic spectrum monitoring, in particular to an electromagnetic spectrum monitoring method and system. Background technique [0002] With the continuous development and progress of electronic technology, the application field of radio business has expanded rapidly, and various mobile communications, satellite communications, radio and television, radar navigation, telemetry and remote control, radio astronomy and other applications have spread throughout national defense, public safety, commercial and industrial fields. sector, whose volume of business is increasing day by day. The rapid development of radio services has brought new challenges and higher requirements to the management and monitoring of radio spectrum. [0003] Electromagnetic spectrum monitoring refers to the monitoring and general survey of radio signals in space. It mainly includes three main links: signal detection, modulatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00
Inventor 于宏毅张效义胡赟鹏田鹏武李青张霞谢然袁本义
Owner THE PLA INFORMATION ENG UNIV
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