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Wind profile radar signal and data processing method based on two channels

A wind profiler radar and data processing technology, applied in radio wave measurement systems, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve the problem that the coherent accumulation time return signal autocorrelation time cannot be automatically matched, which is not conducive to weak signals. Extraction etc.

Active Publication Date: 2012-07-04
航天新气象科技有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to provide a dual-channel based wind profile radar signal and data processing method to solve the problem that the existing coherent accumulation time and the autocorrelation time of the returned signal cannot be automatically matched during the traditional wind profile radar signal processing, which is not conducive to weak signal extraction problem

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  • Wind profile radar signal and data processing method based on two channels
  • Wind profile radar signal and data processing method based on two channels
  • Wind profile radar signal and data processing method based on two channels

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Embodiment Construction

[0031] A dual-channel-based wind profiler radar signal and data processing method is implemented based on a signal processor and a data terminal, and the specific steps are:

[0032] In the first step, the signal processor sets two sets of processing parameters

[0033] For the autocorrelation time, 0.2 and 0.4 seconds were selected for the tropospheric wind profiler radar, and 0.065 and 0.13 seconds for the boundary layer wind profiler radar, respectively. The autocorrelation time and beam dwell time are:

[0034] τ=PRT×N CI ×N FFT (1)

[0035] T BEAM =PRT×N CI ×N FFT ×N SPC (2)

[0036] where τ is the autocorrelation time, T BEAM is the beam dwell time, PRT is the pulse repetition period, N CI is the coherent accumulation number, N FFT is the number of FFT points, N SPC is the spectral mean.

[0037] After the beam dwell time is determined, two groups of different processing parameters are calculated according to the selected two groups of autoc...

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Abstract

The invention discloses a wind profile radar signal and data processing method based on two channels. The wind profile radar signal and data processing method is implemented by a signal processor and a data terminal, and comprises the specific steps that: the signal processor sets two groups of processing parameters; 2, the signal processor generates two groups of power spectrum data; 3, the data terminal processes the two groups of power spectrum data respectively; and 4, the data terminal selects a processing result. Therefore, wind profile radar signal and data processing based on the two channels is implemented. The method has the advantages that: the data output rate of a wind profile radar system is not changed; the new increased processing load is relatively small; the method is easily implemented; and the extraction capacity and the estimation precision of a wind profile radar to weak signals are improved effectively.

Description

technical field [0001] The invention relates to a radar signal and data processing method, in particular to a dual-channel based wind profiler radar signal and data processing method. Background technique [0002] The current wind profiler radar signal and data processing methods are based on signal processors and data terminals. The main steps of signal processing are: coherent accumulation, CI coherent accumulation of successively returned echo signals, where N CI is called the coherent accumulation number; the spectral transform, the N FFT The echo signals after coherent accumulation are subjected to fast Fourier transform (FFT) to obtain a power spectral density function, N FFT is called the number of FFT points; spectral averaging, the N SPC Average power spectral density functions to obtain a new average power spectral density function (hereinafter referred to as power spectrum), N SPC called the spectral mean. After that, the data terminal performs spectral data ...

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Application Information

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IPC IPC(8): G01S7/41G01S13/95
CPCY02A90/10
Inventor 魏艳强王晓蕾张哲
Owner 航天新气象科技有限公司
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