Wideband Waveform Design for Robust Target Detection

TL;DR

This paper presents a novel method for designing wideband waveforms in radar systems that maintain detection performance over a range of target parameters, enhancing robustness and resolution.

Contribution

It introduces a new optimization-based framework for creating robust wideband waveforms tailored for MISO radar systems, improving detection across uncertain target parameters.

Findings

Proposed waveforms outperform traditional signals in detection probability.

Method maintains detection capability over a range of delays and Doppler shifts.

Numerical results validate the robustness and efficiency of the designed waveforms.

Abstract

Future radar systems are expected to use waveforms of a high bandwidth, where the main advantage is an improved range resolution. In this paper, a technique to design robust wideband waveforms for a Multiple-Input-Single-Output system is developed. The context is optimal detection of a single object with partially unknown parameters. The waveforms are robust in the sense that, for a single transmission, detection capability is maintained over an interval of time-delay and time-scaling (Doppler) parameters. A solution framework is derived, approximated, and formulated as an optimization by means of basis expansion. In terms of probabilities of detection and false alarm, numerical evaluation shows the efficiency of the proposed method when compared with a Linear Frequency Modulated signal and a Gaussian pulse.