Robust transceiver design for wideband MIMO radar utilizing a subarray antenna structure
Journal article, 2013

In this paper, we investigate the possibility to suppress interference in wideband multiple-input multiple-output radar. The idea is to employ tunable filters at the transmitter and the receiver sides, and to derive filter coefficients that result in optimal transmitted signals from a system performance point of view, for a given radar scenario. The system performance is measured in signal-to-interference-and-noise ratio (SINR) at the receiver output, from which the filter properties are derived. The focus is to suppress active jamming interference, and especially deceptive jamming interference. We discuss two ways to derive the transmit and the receive filters. Each procedure utilizes two different power constraints related to the transmit filters. To incorporate imperfections in the given scenario, a robust extension to the design problem is proposed. Two different robust methods are evaluated: one that utilizes a Taylor series expansion of the SINR, and one that exploits a worst-case SINR maximization. Numerical validation illustrates the possibility to suppress interference without actually forming a spatial null in the direction towards interference, and the necessity to design transmit filters that are robust to uncertainties in the given scenario. (C) 2013 Elsevier B.V. All rights reserved.

MIMO radar

steering vector

interference

models

delay

target detection

resolution

wave-form design

Wideband radar

clutter

analysis

performance

Transmit-receive filter design

Robust

systems

Author

Marie Ström

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Signal Processing

Mats Viberg

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Signal Processing

K. Falk

SAAB Electronic Defence Systems (EDS)

Signal Processing

0165-1684 (ISSN)

Vol. 93 12 3541-3552

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1016/j.sigpro.2013.03.025

More information

Latest update

9/6/2018 2