Since 1985, ARL:UT has served as the life cycle engineers for a highly reliable worldwide GPS tracking network for the National Geospatial-Intelligence Agency (NGA) called the GPS Monitor Station Network (MSN). The network collects, processes, quality checks, and forwards GPS tracking data to a variety of customers. The system is capable of supporting real-time and post processing customers that include the NGA, USAF, and International GPS Service (IGS). The data for this system is used to derive the NGA precise ephemeris for the GPS satellites as well as improve the accuracy and integrity of the GPS constellation. ARL:UT is involved in all aspects of the program including future planning, requirements, design, implementation, testing, deployment, maintenance, and field support. The GPS network is unique in that it collects data from both the civil and military signals. Thus, it can supply data with standard positioning service (SPS) or precise positioning service (PPS) accuracy at differing classification levels depending on the customer's needs.
Much of the code that became the base library of the GPSTk was originally developed in support of this project. The MSN continues to utilize GPSTk functionality in the operational system and uses it as a basis for developing additional analysis tools for GPS data. The MSN intends to continue to contribute applications and functionality to the GPSTk as well as utilize functionality as it aligns with project needs.
- 18 Nov 2006