| Popis: |
Ranging errors are typically grouped into six classes: ionosphere propagation, troposphere propagation, multipath propagation, ephemeris data, satellite clock, and receiver errors. The magnitude of either error is directly proportional to the total electron content (TEC) in a tube of 1 m 2 cross section along the propagation path. Multipath propagation of the global navigation satellite system (GNSS) signal is a dominant source of error in positioning, especially in differential GNSS architectures. Processing against slowly changing multipath can be broadly separated into two classes: spatial processing and time‐domain processing. Another approach to time‐domain multipath mitigation is called multipath mitigation technology and incorporated a number of GNSS receivers manufactured by NovAtel Corporation of Canada. It is convenient to convert each error into an equivalent range error experienced by a user, which is called the user‐equivalent range error. |
