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Frequency hopping signal parameter estimation method based on Myriad filtering

A technology of frequency hopping signal and parameter estimation, applied in the field of communication, can solve the problem of parameter estimation performance degradation, achieve good suppression effect, overcome the obvious degradation of estimation performance, and high process feasibility.

Inactive Publication Date: 2014-12-17
XIDIAN UNIV
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Problems solved by technology

However, the disadvantage of this method is that the parameter estimation performance of this method will be significantly reduced under low generalized signal-to-noise ratio due to the fact that the fractional low-order operation has a certain inhibitory effect on the frequency hopping signal itself.

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  • Frequency hopping signal parameter estimation method based on Myriad filtering
  • Frequency hopping signal parameter estimation method based on Myriad filtering
  • Frequency hopping signal parameter estimation method based on Myriad filtering

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] Refer to attached figure 1 , the concrete steps of the present invention are as follows.

[0039] Step 1, collect the signal.

[0040] The signal acquisition system selects any received signal containing the original frequency hopping signal and impulse noise through the receiving antenna, and uses the selected received signal as the collected signal.

[0041] The impulse noise contained in the received signal collected by the present invention is symmetrical and stable SαS distributed noise, and the time domain waveform of symmetrical and stable SαS distributed noise is as follows figure 2 shown.

[0042] figure 2 The time-domain waveform shown in (a) is the symmetrical and stable SαS distribution noise with characteristic index α=1.5, figure 2 The curve connected by a solid line segment in (a) represents the time-domain waveform of the symmetrical and ...

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Abstract

The invention discloses a frequency hopping signal parameter estimation method based on Myriad filtering. The frequency hopping signal parameter estimation method based on the Myriad filtering is completed by firstly using a Myriad filter to suppress impulse noise, and then using a linear time frequency analysis method STFT in combination to complete estimation of parameters of frequency hopping periods, frequency hopping moments and frequency hopping frequency of frequency hopping signals under alpha stationary distribution noise. The frequency hopping signal parameter estimation method based on the Myriad filtering includes concrete steps: 1, collecting the signals; 2, performing weighting on the Myriad filtering; 3, analyzing time frequency; 4, searching the maximum value; 5, extracting parameter information. The frequency hopping signal parameter estimation method based on the Myriad filtering overcomes the defect that high impulse noise can not be suppressed in the prior art, and improves parameter estimation accuracy of the frequency hopping signals under a low generalized signal to noise ratio.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to a method for estimating frequency-hopping signal parameters based on Myriad filtering in the field of wireless communication technology and signal processing technology. The invention uses the Myriad filter to suppress the pulse noise, uses the short-time Fourier transform (STFT) to estimate the frequency hopping period, the hopping time and the frequency hopping frequency parameters of the frequency hopping signal, and realizes the frequency hopping in a non-Gaussian pulse noise environment Signal parameter extraction. Background technique [0002] Frequency hopping is an important spread spectrum communication method, which has the characteristics of strong anti-interference ability, high spectrum utilization rate, and excellent networking ability, and is widely used in the field of non-cooperative communication. Therefore, at the receiving end of a non-cooperativ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/715H04L25/02
Inventor 金艳任航赵新明姬红兵
Owner XIDIAN UNIV
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