Improved radar signal time-frequency analysis method

The invention discloses an improved radar signal time-frequency analysis method, which comprises the following steps: S1: performing signal decomposition operation based on an improved empirical modedecomposition algorithm on a signal to obtain a series of mutually orthogonal intrinsic mode function...

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Bibliographic Details
Main Authors YUAN YONGYI, LU HANYU, PAN FANGBO, ZHANG XU, CHEN KUNSHAN, JU ZHIYUAN
Format Patent
LanguageChinese
English
Published 30.08.2019
Subjects
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
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Summary:The invention discloses an improved radar signal time-frequency analysis method, which comprises the following steps: S1: performing signal decomposition operation based on an improved empirical modedecomposition algorithm on a signal to obtain a series of mutually orthogonal intrinsic mode function components and a residual component Res(t), wherein the t is signal duration; S2: screening the obtained intrinsic mode function components, and removing invalid intrinsic mode function components to obtain valid intrinsic mode function components; S3: performing Hilbert transformation on each obtained intrinsic mode function component to convert each basic mode component into an analytic signal; and S4: respectively performing time-frequency analysis based on a rearrangement smooth pseudo Wigner-Ville distribution algorithm on the valid intrinsic modal function components to obtain an analysis result after the time-frequency analysis processing of the rearrangement smooth pseudo Wigner-Ville distribution algorith
Bibliography:Application Number: CN201910460524