Efficient Dual-Frequency Ambiguity Resolution Algorithm for GPS-Based Attitude Determination

Abstract

This paper discusses the benefits of using dual-frequency receivers for attitude determination applications. The ambiguity resolution performance, baseline, and attitude solution accuracy is compared between single and dual-frequency modes. Evaluation is performed both in static and kinematic environments. While the static data were collected in an open-sky environment, the two kinematic data sets were collected in “degraded” environments including partial blockages due to trees or overpasses. The level of dynamics observed during these tests is somewhat limited, as the vehicle often travels at constant speed, but is, however, representative of car navigation. Results indicate that for baselines as long as