Multi-receiver master control station for differential GPS and method
US5525999A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Nov 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/071
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A master control station (10) includes a common antenna (12) which drives two, unsynchronized multi-channel GPS receivers (16, 18). The two receivers (16, 18) couple to a controller (24). The controller (24) commands the receivers (16, 18) to identify all GPS satellites in view, and then assigns (48) satellites to various channels in the receivers (16, 18). The assignment includes at least one common satellite between the two receivers. Location data are obtained from the two receivers for the common satellite and used to normalize (66) all pseudorange data from all channels to compensate for the lack of synchronization between the two receivers (16, 18). Differential GPS location resolution (84) may then occur using the normalized data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.