NDLI: Waveform design for multiple extended targets in temporally correlated cognitive radar system

Content Provider	IET Digital Library
Author	Chen, Peng Wu, Lenan
Abstract	In cognitive radar systems, a closed-loop feedback is formed by the transmitter, environment, and receiver. Then, the transmit waveform can be optimised to improve the radar estimation performance. Unlike existing works that only consider single target with temporally correlated characteristic, waveform design for multiple extended targets is investigated in this study. The authors propose a Kalman filtering (KF)-based method to exploit the temporal correlation of target scattering coefficients (TSCs) and improve the corresponding estimation performance. Additionally, for the targets of both closed and separated in range, a novel optimisation problem is established to design the transmit waveform and minimise the mean square error of estimated TSC at each KF iteration, where an additional weight vector is introduced to achieve a trade-off among different targets. Since the optimisation problem is non-convex and cannot be solved efficiently, a two-step method is proposed to convert it into a convex problem, which can be solved by an optimisation toolbox such as CVX. Simulation results demonstrate that the joint method of waveform design outperforms the existing methods in TSC estimation for both separated and closed targets, and offers much more flexibility.
Starting Page	398
Ending Page	410
Page Count	13
ISSN	17518784
Volume Number	10
e-ISSN	17518792
Issue Number	Issue 2, Feb (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/10/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2015.0295
Journal	IET Radar, Sonar & Navigation
Publisher Date	2016-02-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Closed Loop Feedback Concave Programming Correlation Theory CVX Electromagnetic Wave Propagation Electromagnetic Wave Scattering Feedback Filtering Method in Signal Processing Interpolation And Function Approximation Iterative Method Kalman Filter Kalman Filtering KF Iteration Mean Square Error Method Mean Square Error Minimisation Minimisation Multiple Extended Target Nonconvex Programming Numerical Analysis Optimisation Problem Optimisation Technique Radar Equipment Radar Estimation Performance Radar Receiver Radar Transmitters Receiver System And Application Target Scattering Coefficient Temporally Correlated Cognitive Radar System Transmitter TSC Estimation Waveform Analysis Waveform Design Waveform Transmission Weight Vector
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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