Bootstrapping tandem GPS navigation receivers
US7057554B2 · kind B2 · utility
6Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2004 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Jan 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/43
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A bootstrapping tandem navigation receiver system includes two independent navigation receivers. A first uses coherent detection and makes carrier-phase pseudorange measurements. A second uses non-coherent detection and a longer predetection interval and thus can acquire satellites in very weak signal environments. The second navigation receiver delivers a bootstrapping message to the first receiver that allows it to directly acquire the satellites without searching for them. The first navigation receiver then drives to find carrier phase lock and produces its more accurate measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.