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Method and device for accurately measuring multi-pulse frequency of single carrier frequency pulse signal

A pulse signal and precise measurement technology, which is applied in frequency measurement devices, frequency-to-phase shift conversion, spectrum analysis/Fourier analysis, etc., can solve the problems that the frequency measurement accuracy cannot be further improved, and achieve the effect of improving the frequency measurement accuracy

Inactive Publication Date: 2017-06-20
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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Problems solved by technology

[0004] In order to solve the problem that the Kay algorithm cannot further improve the frequency measurement accuracy when measuring the frequency of a single-carrier frequency pulse signal, the present invention utilizes multiple pulse iterations on the basis of single-pulse frequency measurement to achieve high-precision frequency accuracy of a single-carrier frequency pulse signal. Measurement

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  • Method and device for accurately measuring multi-pulse frequency of single carrier frequency pulse signal
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  • Method and device for accurately measuring multi-pulse frequency of single carrier frequency pulse signal

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[0040] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0041] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0042] see figure 1 , the inventive method comprises:

[0043] Orthogonal transformation step: firstly carry out orthogonal transformation to the received real number single-carrier frequency burst signal sample composed of K real number single-carrier frequency pulse signals, so that the real number pulse train signal sample is converted into a complex number pulse train signal sample, It is convenient for subsequent steps to extract and process the signal sample phase.

[0044] The step of calcula...

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Abstract

The present invention relates to a method for accurately measuring the frequency of a pulse signal, and discloses a method and a device for accurately measuring the multi-pulse frequency of a single carrier frequency pulse signal. The method comprises the following steps of: Step 1, orthogonally transforming real-number single carrier frequency pulse string signal samples that are received, and processing the first complex-number pulse signal sample by using a Kay algorithm to obtain a frequency iteration initial value fsp; Step 2, carrying out Fourier transform of each complex-number pulse signal sample to obtain the phase difference of peak points after Fourier transform of each complex-number pulse signal sample; Step 3, calculating the time difference between starting sampling points of Fourier transform of two adjacent complex-number pulse signal samples; Step 4, performing iterative calculation to get f(2), f(3), ..., f(K), wherein f(K) is the accurate measurement value of the multi-pulse frequency of the real-number single carrier frequency pulse string signal samples.

Description

technical field [0001] The invention relates to a method for accurately measuring the frequency of a pulse signal, in particular to a method for accurately measuring the frequency of multiple pulses of a single carrier frequency pulse signal. Background technique [0002] Steven Kay published a paper titled "A Fast and Accurate Single Frequency Estimator" on "IEEE Transactions on Acoustics.Speech.And Signal Processing" in 1989, which proposed a single carrier frequency estimation method in a Gaussian white noise environment. The signal uses the phase weighting method to carry out the algorithm of frequency accurate measurement, this is the Kay algorithm widely used at present. In this thesis, the phase weighting method is used to carry out phase weighting processing on the single carrier frequency continuous wave signal, and the unbiased measurement value of the continuous wave signal frequency in the sense of the smallest variance can be obtained under the condition of high...

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Application Information

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IPC IPC(8): G01R23/12G01R23/16
CPCG01R23/12G01R23/16
Inventor 吕东泽贾朝文陈俊霖程锌
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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