NDLI: 2D optimal MMF design with a controllable maximum loss for Doppler signals

Content Provider	IET Digital Library
Author	Wang, Yan He, Yuliang Sun, Sibo Fu, Jin
Abstract	Mismatched filter (MMF) is a commonly used technique to suppress the masking effect of weak targets due to the range sidelobes of stronger targets. Although the existing design of MMFs is proved to have a good performance for radar, they cannot be directly applied to sonar, since the Doppler effect for sonar is far more severe than that for radar. In this study, the authors propose a novel two-dimensional (2D) optimal design of MMFs with a controllable maximum loss for sonar. First, they investigate the design of MMFs based on the 2D cross-correlation function when considering the Doppler effect. It is capable of improving the suppression performance of range sidelobes caused by Doppler signals. MMFs are extended to two dimensions. Then, the optimisation problems to minimise the integrated sidelobe level or the peak sidelobe level are established. It has the capability to flexibly control the maximum loss of signal-to-noise ratio and the 2D MMF characteristics by weighted functions. Finally, the constrained optimisation problems can be solved by transforming into the second-order cone programming problems. Simulations relative to multiple signals (P4 polyphase code, binary m-sequence and chirp signal) prove the validity of the design approach.
Starting Page	585
Ending Page	592
Page Count	8
ISSN	17518784
Volume Number	12
e-ISSN	17518792
Issue Number	Issue 6, Jun (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/12/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2017.0586
Journal	IET Radar, Sonar & Navigation
Publisher Date	2018-02-28
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	2D Cross-correlation Function 2D MMF Characteristics 2D Optimal MMF Design Constrained Optimisation Problem Controllable Maximum Loss Correlation Method Doppler Effect Doppler Signal Filtering Method in Signal Processing Filtering Theory Integrated Sidelobe Level Minimization Masking Effect Suppression Mathematical Programming Minimisation Mismatched Filter Optimisation Technique Peak Sidelobe Level Radar Radar Signal Processing Radar Theory Range Sidelobe Suppression Performance Second-order Cone Programming Problem Signal to Noise Ratio Sonar Two-dimensional Optimal Design Weighted Function
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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