GPS relative position detection system
US5689269A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1995 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Jan 25, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/51
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system of devices both capable of receiving civilian GPS signals, but also capable of providing a relative distance and direction indication that is accurate to several meters. A first device would be capable of transmitting its GPS determined position to a second device. The second device would include a means for receiving the GPS determined position of the first device, and would also include means for calculating the relative distance and direction between the first and second devices. The system would further include the ability of the first device to selectively transmit telemetry at a desired frequency. By providing the second device with the ability to selectively tune a receiver to receive a telemetry signal broadcast by different devices, a distance and direction to a plurality of first devices is possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.