| Title | NAVSTAR GPS Simulation and Analysis Program [Interim Report] |
|---|---|
| Record ID | 50410 |
| Personal Name Creator |
Kalafus, Rudolph M.; Knable, Norman; Kraemer, John; Vilcans, Janis |
| Source | 252p. in various pagings |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.) |
| Corporate Contributor |
United States. Department of Transportation. Research and Special Programs Administration |
| Publisher | United States. Dept. of Transportation. Research and Special Programs Administration |
| Publication Date | 19831001 |
| Language | English |
| Abstract | This study assesses the capability of the planned NAVSTAR Global Positioning System (GPS) to meet civil navigation requirements. When it becomes operational in about 1983, NAVSTAR GPS will provide accurate two-dimensional and three-dimensional service to a wide spectrum of users. The quality of the service will depend on the availability of the satellite signals, the satellite geometrics, the timing accuracy of the signal, and the user receiver design. In this study ten specific issues are identified which have not yet been resolved. These issues provide the focus for the effort. First, air, marine and land requirements are cited. Next, the approach is described, whereby a combination of analysis and receiver simulation is used to address the issues. Receiver design alternatives are then discussed, focusing on the resulting GDOP distributions. Outages caused by poor satellite geometries are described, and some preliminary estimates given for the ability of receivers to "coast" through them. The effects of Selective Availability (reduced accuracy) are then analyzed. Differential operation is treated in some detail. The effects of ionospheric and tropospheric delays are estimated. It is shown that differential operation can provide excellent reduction in bias errors over a considerable region. Finally, costs are estimated for single- and dual-channel user receivers for the next 20 years. |
| Rosap ID | dot:11797 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/11797 |
| TRT Terms | Global Positioning System; NAVSTAR; Assessments; Simulation; Cost estimating; Radar receivers |
| General Subjects | NAVSTAR; Global Positioning System; Artificial satellites in navigation; Civil sector; Requirements; User needs |
| Classification | NTL - MARINE/WATERWAYS TRANSPORTATION - MARINE/WATERWAYS TRANSPORTATION; NTL - MARINE/WATERWAYS TRANSPORTATION - Marine Safety; NTL - MARINE/WATERWAYS TRANSPORTATION - Marine Planning and Policy |
| Geographical Coverage |
United States |
| Contract Number | RS217/R3506 |
| Report Number | DOT-TSC-RSPA-83-02; PB83-216648 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/50000/50400/50410/DOT-TSC-RSPA-83-02.pdf |
| Format | |
| Database | NTL Digital Repository |