Title :
RTCA SC-159 Wide Area Integrity Broadcast/Wide Area Differential GPS status
Author :
van Dierendonck, A.J. ; Enge, Per
Abstract :
The Wide Area Integrity Broadcast (WIB) (formerly the GPS Integrity Channel-GIC) will use a network of ground stations at known locations to determine the status of every GPS satellite in view. It will then broadcast satellite health to GPS users in real time from a geostationary satellite (GS), thus providing system integrity. This broadcast will also include error estimates for the same GPS satellites that are valid over a specified region, which may include one or more countries or continents. These estimates, if accurate enough, can be used as differential corrections. This concept is called Wide Area Differential GPS (WDGPS). In addition, the broadcast signal will be modulated with a pseudo random noise (PRN) code that is synchronized with GPS time. Thus, it can also be used for ranging to augment the GPS system, thus improving system availability and continuity
Keywords :
radionavigation; satellite ground stations; satellite relay systems; GPS Integrity Channel-GIC; GPS satellite; GPS time; RTCA SC-159; Wide Area Differential GPS; Wide Area Integrity Broadcast; broadcast signal; differential corrections; error estimates; geostationary satellite; ground stations; pseudo random noise code; ranging; system availability; system continuity; system integrity; Aircraft navigation; Clocks; Error correction; Fault detection; Global Positioning System; Radio navigation; Satellite broadcasting; Satellite ground stations; Signal design; Signal detection;
Conference_Titel :
Position Location and Navigation Symposium, 1994., IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
0-7803-1435-2
DOI :
10.1109/PLANS.1994.303367
