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Signal Detection and Signal Information Interpretation Method Based on Spectral Analysis

A signal detection and signal information technology, applied in spectrum analysis/Fourier analysis, noise figure or signal-to-noise ratio measurement, transmission monitoring, etc., can solve problems such as high computational complexity, weak anti-noise performance, and poor adaptability. Achieve the effects of low computational complexity, high accuracy, and improved accuracy

Active Publication Date: 2015-09-30
PLA UNIV OF SCI & TECH
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Problems solved by technology

[0008] In short, the existing problems of signal detection and signal information interpretation technology are: poor adaptability, weak anti-noise performance, high computational complexity, and need for prior knowledge, especially for background noise that is changeable, communication mechanism is complex, and prior knowledge is difficult to obtain Satellite communication, deep space communication and other application fields are difficult to be competent

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  • Signal Detection and Signal Information Interpretation Method Based on Spectral Analysis
  • Signal Detection and Signal Information Interpretation Method Based on Spectral Analysis
  • Signal Detection and Signal Information Interpretation Method Based on Spectral Analysis

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Embodiment Construction

[0033] Such as figure 1 As shown, the signal detection and signal information interpretation method based on spectral type analysis of the present invention comprises the following steps:

[0034] 10) Spectrum data acquisition: obtain spectrum data from the front-end Fourier transform equipment;

[0035] In the step of acquiring (10) the spectrum data, the spectrum data is an amplitude spectrum or a power spectrum.

[0036] 20) Mean spectrum acquisition: perform mean filtering on the spectrum data to generate mean spectrum;

[0037] The step of obtaining the mean spectrum (20) is specifically: using mean Convolve the spectral data with the mean window of , and generate the mean spectrum corresponding to the spectral data. (L mean usually an odd number)

[0038] Suppose the original spectrum SP,

[0039] P i ∈SP(i=1...N spec ) (1)

[0040] is the amplitude of the i-th frequency point in the spectrum, Nspec=card(SP) is the number of spectrum points, where the card() o...

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Abstract

The invention discloses a signal detection and signal information interpretation method based on spectral pattern analysis. The method includes the steps of obtaining frequency spectrum data, a mean value spectrum and a mean value spectrum histogram, delimiting areas and determined areas, obtaining independent signals, a signal histogram and a signal principle value, and interpreting signal information. The signal detection and signal information interpretation method is high in adaptability, good in anti-noise performance, low in calculation complexity and free of priori knowledge requirements.

Description

technical field [0001] The invention belongs to the field of cognitive radio and digital signal processing, in particular to a signal detection and signal information interpretation method based on spectrum type analysis. Background technique [0002] With the development of wireless communication technology, wireless communication devices such as mobile phones and satellite communication terminals have been widely used by people, and various wireless communication methods have been deeply integrated into various production and living activities of human beings. Frequency domain analysis based on Fourier transform has always been the core means of wireless communication research, and monitoring the spectrum usage of fixed frequency bands is an important technical basis to ensure the normal operation of wireless communication systems and improve the efficiency of wireless communication spectrum usage. Spectrum detection is mainly divided into two parts: signal detection and s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/336G01R23/16G01R29/26H04B17/30
Inventor 边东明韩福春郑晖孙谦胡婧李永强谢智东张更新
Owner PLA UNIV OF SCI & TECH
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