NDLI: Time-based multi-component irregular FM micro-Doppler signals decomposition via STVMD

Content Provider	IET Digital Library
Author	Li, Yi Xia, Weijie Dong, Shiqi
Abstract	The decomposition of multi-component micro-Doppler signals overlapping in the time-frequency (T-F) domain is critical and challenging, especially in the case of irregular instantaneous Doppler frequency. The authors propose a novel time-based decomposition method called the short-time variational mode decomposition (STVMD) to analyse the irregular (FM) micro-Doppler signals, and present an optimal model combined with T-F transformation. Then, considering the STVMD may fail to extract the instantaneous frequency (IF) of overlapped components, an improved STVMD algorithm is put forward. Since the dependence of the STVMD algorithm on the initial value, they adopt the Kalman filtering to implement IF tracking and regrouping under the global constraint, further accelerating the convergence of the algorithm. Furthermore, due to the mode aliasing at the intersection point, they adopt a degenerate STVMD model to decompose the signals with known centre frequencies, which can be viewed as a Wiener filter. With the two steps, the improved STVMD algorithm can effectively solve the decomposition of T-F overlapping irregular FM micro-Doppler signals. Compared with the peak ridge technique and the ridge path regrouping and intrinsic chirp component decomposition (RPRG + ICCD), the proposed method shows the effectiveness and adaptability even for irregular FM signals with large T-F spectrum amplitude fluctuation in the low signal-to-noise ratio environment.
Starting Page	1502
Ending Page	1511
Page Count	10
ISSN	17518784
Volume Number	14
e-ISSN	17518792
Issue Number	Issue 10, Oct (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/14/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2020.0091
Journal	IET Radar, Sonar & Navigation
Publisher Date	2020-06-02
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Degenerate STVMD Model Filtering Method in Signal Processing Frequency Domain Analysis Hilbert Transform IF Tracking Improved STVMD Algorithm Instantaneous Frequency Integral Transforms in Numerical Analysis Irregular FM MicroDoppler Signal Irregular FM Signal Irregular Instantaneous Doppler Frequency Irregular MicroDoppler Signal Kalman Filter Kalman Filtering Low Signal-to-noise Ratio Environment Mathematical Analysis Multicomponent MicroDoppler Signal Overlapped Component Short-time Variational Mode Decomposition Signal Processing Theory T-F Overlapping T-F Spectrum Amplitude Fluctuation Time-based Decomposition Method Time-based Multicomponent Irregular FM MicroDoppler Signal Decomposition Time-frequency Time-frequency Analysis Wiener Filter
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Micro-Doppler feature extraction method for vibration targets based on the segmental intrinsic chirp component decomposition

Superior execution time design of optimal (Wiener) time-frequency filter

A Variable Bandwidth Filter for Estimation of Instantaneous Frequency and Reconstruction of Signals With Time-Varying Spectral Content

Empirical mode decomposition based on instantaneous frequency boundary

Instantaneous fundamental frequency estimation of non-stationary periodic signals using non-linear recursive filters

Instantaneous Frequency Estimation Based on Modified Kalman Filter for Cone-Shaped Target

Time-Varying Frequency-Modulated Component Extraction Based on Parameterized Demodulation and Singular Value Decomposition

Directional adaptive kernel distribution and its application

Multicomponent noisy signal adaptive instantaneous frequency estimation using components time support information

Time-based multi-component irregular FM micro-Doppler signals decomposition via STVMD

Similar Documents

Micro-Doppler feature extraction method for vibration targets based on the segmental intrinsic chirp component decomposition

Superior execution time design of optimal (Wiener) time-frequency filter

A Variable Bandwidth Filter for Estimation of Instantaneous Frequency and Reconstruction of Signals With Time-Varying Spectral Content

Empirical mode decomposition based on instantaneous frequency boundary

Instantaneous fundamental frequency estimation of non-stationary periodic signals using non-linear recursive filters

Instantaneous Frequency Estimation Based on Modified Kalman Filter for Cone-Shaped Target

Time-Varying Frequency-Modulated Component Extraction Based on Parameterized Demodulation and Singular Value Decomposition

Directional adaptive kernel distribution and its application

Multicomponent noisy signal adaptive instantaneous frequency estimation using components time support information

Time-based multi-component irregular FM micro-Doppler signals decomposition via STVMD