Field unit for use in a GPS system
US6531982B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1997 |
| Grant date | Mar 11, 2003 |
| Priority date | — |
| Expiry date | Sep 30, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2205/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system is provided for communicating location and other related information of a field unit to a remote base station. The field unit generates position signals based on signals received from communication with a plurality of GPS satellites. These position signals are transmitted to a remote base station, where they are processed and displayed. The field unit includes an environmental circuit having devices for determining an environmental condition and producing an environmental signal representative of the environmental condition. The environmental signal is also transmitted to the remote base station for processing and display. The field unit is also provided with a cellular link circuit for transmitting the position signals and the environmental signal to the remote base station via a cellular link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.