NDLI: Effective coherent integration method for marine target with micromotion via phase differentiation and radon-Lv's distribution

Content Provider	IET Digital Library
Author	Chen, Xiaolong Guan, Jian Li, Xiuyou He, You
Abstract	Effective detection of marine targets with low observability gives a severe challenge to radar signal processing. The micro-Doppler (m-D) signatures of marine target can provide extra information for non-stationary and time-varying signal analysis. Long-time integration is an effective way to strengthen the m-D signal and improve signal-to-clutter ratio. However, the performances are affected by the range across unit and Doppler frequency migration effects. In this study, m-D characteristics of marine target are studied and a novel representation, i.e. phase differentiation and Radon-Lv's distribution (PD-RLVD), is proposed to detect the m-D signal to realise the long-time coherent integration. The PD-RLVD can accurately and directly represent the m-D signal in the chirp rate and chirp change domain appearing as obvious peaks. The proposed method is simple not only because it only requires a 2D Fourier transform of the scaled Radon instantaneous auto-correlation function after PD, but also for not introducing any non-physical attributes. Relations between PD-RLVD and other integration methods are introduced as well. Experiments with real data show that the proposed method can achieve higher integration gain, detection probability, and accuracies of motion parameter estimation.
Starting Page	1284
Ending Page	1295
Page Count	12
ISSN	17518784
Volume Number	9
e-ISSN	17518792
Issue Number	Issue 9, Dec (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/9/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2015.0100
Journal	IET Radar, Sonar & Navigation
Publisher Date	2015-12-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	2D Fourier Transform Chirp Change Chirp Rate Correlation Method Detection Probability Doppler Frequency Migration Effects Effective Coherent Integration Method Effective Marine Target Detection Integral Transforms in Numerical Analysis Integration Integration Gain M-D Signal Representation Marine Radar Micro Doppler Signatures Micromotion Motion Estimation Motion Parameter Estimation Accuracies Nonstationary Signal Analysis Numerical Integration And Differentiation Parameter Estimation PD-RLVD Phase Differentiation Radar Clutter Radar Detection Radar Equipment Radar Signal Processing Radon Transforms Radon-Lv Distribution Scaled Radon Instantaneous Autocorrelation Function Signal Detection Signal Representation Signal-to-clutter Ratio Improvement Statistical Distribution Statistics System And Application Time-varying Signal Analysis
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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