NDLI: Low-observable target detection using two-stage RFRFT

Content Provider	IET Digital Library
Author	Wang, Wenguang Chen, Cheng Qu, Gaolong Zuo, Yan Zeng, Guoqi
Abstract	Long-time coherent integration is an effective method to implement low-observable target detection in a complex scenario. Radon-fractional Fourier transform (RFRFT) can compensate the range and Doppler migration simultaneously and obviously improve the signal-to-clutter-noise ratio (SCNR) via long-time coherent integration. However, RFRFT uses a combination of moving parameters, i.e. initial range, velocity and acceleration, to search targets, increasing the computational burden. In this study, a novel two-stage RFRFT is proposed to detect low-observable targets. In the first stage, by calculating the spectrum similarity between adjacent bins, regions of interest (ROIs) can be detected in the range–Doppler domain. The processing in the first stage reduces the global search to a limited number of ROIs. In the second stage, based on the extraction of moving parameters, a refined search is performed to realise target detection and false alarm discrimination. To verify the effectiveness of the proposed two-stage method, both a simulation scenario and real radar dataset are applied. The theoretical analysis and experiment results show that the novel method is effective for the detection of dim targets with far less computation than standard RFRFT.
Starting Page	653
Ending Page	663
Page Count	11
ISSN	17518784
Volume Number	13
e-ISSN	17518792
Issue Number	Issue 4, Apr (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/13/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2018.5336
Journal	IET Radar, Sonar & Navigation
Publisher Date	2018-12-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Doppler Migration Doppler Radar False Alarm Discrimination Fourier Transforms Integral Transforms Long-time Coherent Integration Low-observable Target Detection Moving Parameter Radar Detection Radar Theory Radon Transforms Radon-fractional Fourier Transform Range-Doppler Domain Refined Search Signal Detection Spectrum Similarity Target Detection Two-stage RFRFT
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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