Vehicle dynamics measuring apparatus and method using multiple GPS antennas
US6671587B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2002 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Feb 5, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2250/03
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for measuring dynamic movement of a vehicle (10) by employing multiple GPS satellites and determining velocity based change in the carrier frequency of multiple satellite signals. The apparatus includes at least two GPS receiving antennas (12a and 12b) installed on a vehicle (10) at known locations and a controller (20) for processing received GPS signals (16a-16c) and monitoring a carrier frequency associated with the GPS signals. The controller (20) determines a change in the carrier frequency of the GPS signals due to Doppler effect. The controller (20) further determines a first inertial velocity vector of each of the receiving antennas (12a and 12b) based on the change in carrier frequency, and determines angular rate of the vehicle based on the inertial velocity vectors. The controller (20) further determines vehicle longitudinal and lateral velocity and acceleration as a function of the inertial velocity vectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.