Mutual Coupling-Based Calibration for the Horus Digital Phased Array Radar

The development of the Horus digital polarimetric phased array radar at the University of Oklahoma is providing opportunities to explore and develop a number of element-level calibration and performance enhancement techniques. As digital phased arrays provide convenient mechanisms for in-situ mutual coupling measurements, the Horus engineering team has been leveraging them to iterate and improve on previously-reported algorithms that seek to align and monitor the performance of each element. Here, these algorithms and initial performance results are summarized.