Method and device for determining common period of multiple signals and readable storage medium

Abstract

The invention discloses a method for determining a common period of multiple signals. A terminal is provided with a sensor matrix composed of a plurality of array elements, and each array element receives signals sent by a to-be-measured signal source. The method comprises the steps: carrying out the N-time snapshot space-time sampling of output signals, received by M array elements of an antennaarray element, of K to-be-measured signal sources, so as to construct a first signal matrix, for the K to-be-measured signal sources, of the M array elements; determining a first covariance matrix corresponding to the first signal matrix, and performing eigenvalue decomposition on the first covariance to determine a noise vector and a signal vector; determining a solving function of the frequencyparameter according to the noise vector and the signal vector; and searching the frequency parameter according to the solving function to obtain a common frequency parameter of the signals emitted bythe K signal sources to be tested, the common frequency parameter being a common period of the plurality of signals. The invention further discloses a device for determining the common period of the multiple signals and a readable storage medium. According to the invention, the period of the object can be accurately determined.

Description

technical field [0001] The present invention relates to the technical field of signal processing, in particular to a method, device and readable storage medium for determining a common period of multiple signals. Background technique [0002] When looking for the time law of a certain thing, that is, to determine the period of the thing, it is analyzed by using the time series that characterizes the thing, and the time series can be represented by a signal, that is, the time law of the thing can be determined through signal processing. [0003] There are many methods for determining the time regularity. First, use the Fourier analysis method to transform the same-year sequence into the frequency domain; second, use the short-time Fourier transform method to study the time-varying and stability of the periodic distribution on the time axis, and to study how things are affected by external factors. The change of the time period on the time axis; thirdly, the Gaussian filter i...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method, device and readable storage medium for determining the common period of multiple signals, aiming to solve the problem of inaccurate determination of the period of things

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