A Highly Digital Multiantenna Ground-Penetrating Radar (GPR) System Srivastav, Arvind ; Nguyen, Phong ; McConnell, Matthew ; Loparo, Kenneth A. ; Mandal, Soumyajit Abstract Publication: IEEE Transactions on Instrumentation Measurement Pub Date: October 2020 DOI: 10.1109/TIM.2020.2984415 Bibcode: 2020ITIM...69.7422S