GPS carrier phase measurements are widely used in high accuracy navigation and timing applications. However, anomalies can exist in these measurements, which if not accounted for, can degrade their integrity and accuracy and make them unsuitable for high accuracy applications.
The research contained in this document was performed to identify carrier phase measurement anomalies and develop algorithms that can detect and possibly correct these anomalies. Following the identification of carrier phase anomalies, two types of detectors were developed for their detection along with logic to combine the outputs of the detectors, including appropriate corrective action upon the detection of one or more anomalies. Anomalies were simulated by introducing errors into the GPS data sets collected at Ohio University.