MIMO Radar Transmit Beampattern Design With Ripple and Transition Band Control

The waveform diversity of multiple-input-multiple-output (MIMO) radar systems offers many advantages in comparison to the phased-array counterpart. One of the advantages is that it allows one to design MIMO radar with flexible transmit beampatterns, which has several useful applications. Many resear...

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Bibliographic Details
Published in:IEEE transactions on signal processing Vol. 61; no. 11; pp. 2963 - 2974
Main Authors: Guang Hua, Abeysekera, S. S.
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.06.2013
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Antennas
Applied sciences
Attenuation
Covariance matrix
Design engineering
Detection, estimation, filtering, equalization, prediction
Exact sciences and technology
Focusing
Information, signal and communications theory
Mathematical models
Matrix decomposition
MIMO
MIMO radar
MIMO radar beampattern formula
multiple-input-multiple-output (MIMO) radar
Radar
ripple control
Ripples
Signal and communications theory
Signal, noise
Studies
Telecommunications and information theory
Transaction processing
transmit beampattern
transmit beamspace processing (TBP)
Transmitting antennas
Performance evaluation
Lateral lobe
MIMO system
Cost minimization
multiple-input-multiple-output (MIMO) radar
Covariance matrix
Phased array antenna
ripple control
transmit beamspace processing (TBP)
MIMO radar beampattern formula
Digital filter
Transmitting antenna
transmit beampattern
Radar
Signal processing
Finite impulse response filter
Numerical simulation
Feasibility
ISSN:1053-587X, 1941-0476
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Summary:The waveform diversity of multiple-input-multiple-output (MIMO) radar systems offers many advantages in comparison to the phased-array counterpart. One of the advantages is that it allows one to design MIMO radar with flexible transmit beampatterns, which has several useful applications. Many researchers have proposed solutions to this problem in the recent decade. However, these designs pay little attention to certain aspects of the performance such as the ripples within the energy focusing section, the attenuation of the sidelobes, the width of the transition band, the angle step-size, and the required number of transmit antennas. In this paper, we first propose several methods that can indirectly or directly control the ripple levels within the energy focusing section and the transition bandwidth. These methods are based on existing problem formulations. More importantly, we reformulate the design as a feasibility problem (FP). Such a formulation enables a more flexible and efficient design that achieves the most preferable beampatterns with the least system cost. Using this formulation, an empirical MIMO radar beampattern formula is obtained. This MIMO radar beampattern formula is similar to Kaiser's formula in conventional finite-impulse-response (FIR) filter design. The performances of the proposed methods and formulations are evaluated via numerical examples.
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ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2013.2252173