System and method for generating precise code based and carrier phase position determinations
US5583513A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1993 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Oct 13, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/41
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A GPS system that includes a GPS beacon beacon that receives a plurality of GPS signals. Each of the GPS signals haa a carrier component and a pseudo-random code component. The beacon generates in response to the received GPS signals a plurality of beacon signals. Each of the plurality of beacon signals has a carrier component phase locked to one of the carrier components of the received GPS signals and a pseudo-random code component phase locked to one of the pseudo-random code components of the received GPS signals. The beacon then transmits the plurality of beacon signals. The system also includes a GPS receiver. The GPS receiver can make Code Based Differential GPS position determinations by making range measurements for each of the pseudo-random code components of the GPS and beacon signals and in response computing values representing a position. Additionally, the GPS receiver can make Carrrier Phase Differential GPS position determinations by first making phase measurements for each of the carrier components of the GPS and beacon signals at a plurality of measurment epochs during an initialization period. It then computes initialization values in response to these phase meas…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.