A New Approach for Field Calibration of Absolute GPS Antenna Phase Center Variations

Abstract

This paper introduces a new approach for determining azimuth- and elevation-dependent phase center biases through a field measurement in an absolute sense. It gives particular attention to multipath effects. The model, the conditions for the field procedure, and preliminary analysis of the results are presented. The absolute antenna phase center calibration procedure is implemented in the GPS processing package GEONAP.