Automated GPS processing for global total electron content data

摘要: A software package known as MIT Automated Processing of GPS (MAPGPS) has been developed to automate the processing data into global total electron density (TEC) maps. The goal MAPGPS is produce reliable TEC automatically, although not yet in real time. Observations are used from all available receivers during geomagnetic conditions where successfully collected. In this paper, architecture described. Particular attention given algorithms estimate individual receiver biases. One largest sources error estimating determination these unknown approach solving bias problem uses three different methods: minimum scalloping, least squares, and zero-TEC. These methods described detail, along with their relative performance characteristics. brief comparison JPL biases presented, a possible remaining source estimation discussed. Finally, Madrigal database, which allows Web access maps,