Deliverable 3.1: Technical report on approaches for sub-array beamformer

As a part of work package 3 this report presents the technical requirements for implementing the EISCAT_3D test sub-array beamformer and also, evaluates the commercial beamformer approaches by considering the architectural, interconnectivity, power, bandwidth and cost requirements. The evaluated approaches are categorized as the off-the-shelf and the customized solutions. Read more in the Deliverable 3.1 report.