Robust transmit beampattern design for uniform linear arrays using correlated LFM waveforms

• Main Authors: Hua, Guang, Abeysekera, Saman S.
• Other Authors: School of Electrical and Electronic Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2016
• Online Access: https://hdl.handle.net/10356/82907; http://hdl.handle.net/10220/40385
• Institution: Nanyang Technological University

This paper presents a robust design of the transmit beampattern for uniform linear antenna arrays. Existing designs are usually completed at the stage of achieving an optimal transmit covariance matrix from identifying a weighting matrix with the assumption of ideally orthogonal waveforms. However, we propose a compensation technique to achieve the optimal covariance matrix without the requirement of orthogonality. The corresponding solutions identify a set of weighting matrices that are robust against the imperfection of the waveforms. As a result, a set of easy-to-generate partially correlated linear frequency modulated (LFM) waveforms can be used to achieve identical transmit beampatterns which could be synthesized by ideally orthogonal multiple-input multiple-output (MIMO) radar waveforms. The proposed robust design is evaluated via numerical examples