Integrity Monitoring of CORS Networks - TrigNet Case Study

Abstract

This paper examines quality and integrity issues that need to be managed in order to successfully operate a real-time CORS network. Important concepts in quality control such as data availability, latency, multipath, atmospheric effects, and interference are discussed. These quality indicators are examined in the context of their capacity to indicate potential problems that can degrade the quality of real-time network positioning. The issue of intelligent alerting is raised and an alternative strategy, based on the use of relative thresholds, is proposed with the aim of reducing the number of unnecessary alerts provided to operators. South Africa’s CORS network TrigNet is used as a case study to test some of these concepts.