A First Look at the MPAR Dual-Polarization Phased-Array-Radar Mobile Demonstrator

The Multi-function Phased Array Radar (MPAR) program is exploring the feasibility of combining the functions of several national radar networks into a single radar system delivering the required performance for aircraft and weather surveillance. One of the main challenges to the use of phased-array antennas for weather observations is implementation of dual-polarization with acceptable performance. As part of the MPAR risk-reduction portfolio of activities, a ten-panel dual-polarization phased-array mobile demonstration system (referred to as the Ten Panel Demonstrator or TPD) has been developed. This demonstrator system will serve as a tool to evaluate the suitability of phased-array technology for MPAR's weather-surveillance function. The primary focus will be the development of a feasible calibration procedure which will result in acceptable errors of polarimetric variable estimates. In addition, the TPD is expected to provide information related to other risk reduction aspects (e.g., cost models for MPAR, experience with the design and fabrication of radiating elements, etc.). Herein, a first look at the TPD is presented.