Navigation with satellite communications
US7586438B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2005 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Jan 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/074
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A Low Earth Orbiting (LEO) satellite is used for broadcasting differential navigation corrections. Using LEO satellites, the “footprint” of the beam is much smaller than for geosynchronous satellites. Datalink bandwidth requirements are reduced to sufficiently cover an entire footprint area. With a LEO satellite transmitting in multiple beams, these footprints become even smaller. Corrections targeted to such a small area provide local area corrections broadcast from the LEO satellites. Payment, discounts, subsidies or charges are arranged to encourage different entities to own or host base stations, resulting in wide distribution of the network of base stations for use with satellite communications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.