Method and system for automatic control of vehicles based on carrier phase differential GPS
US6052647A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1997 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Jun 20, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Described is an automatic control system for land (and possible marine) vehicles based on carrier phase differential GPS (CPGPS). The system relies on CPGPS to determine vehicle position and attitude very precisely (position to within 1 cm and attitude to within 0.1.degree.). A system incorporates a technique to calculate and compensate for antenna motion due to vehicle roll and pitch. One aspect of the system utilizes an intelligent vehicle controller that recognizes and adapts to changing conditions, such as vehicle speed, implements towed by the vehicle, soil conditions, and disturbance level. The system provides the capability to control the vehicle on various paths, including straight lines and arbitrary curves. Also described is a technique for initialization and vehicle control using only a single pseudolite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.