Milestone 9.4: First operation of beam-steering capabilities demonstrated
As part of the EISCAT_3D Work Package 9, tests of the IRF-developed triple channel arbitrary-waveform exciter prototype were carried out at the Jicamarca Radio Observatory (JRO) in Peru from March 19, 2012 to March 24, 2012. One of the purposes of these tests was to verify the beam-steering capabilities of the triple-channel prototype.
The techniques and configurations used at JRO deviate in several respects from the Work Plan of Task 9.2 in the EISCAT_3D Preparatory Phase. Instead of the planned use of time-delay-based beam-steering and beam tapering with three exciter units, direct phase steering with two exciter channels and no amplitude tapering was utilised. These deviations were due to the setup of the JRO system.
The proposed beam-steering, to control individual array elements by numerically phase-shifting independent exciters, was demonstrated and validated.
The successful demonstration of the beam-steering capabilities corresponds to Milestone 9.4 of the EISCAT_3D Preparatory Phase. This Milestone was reached in March 2012.