Navigation system with minimal on-board processing
US7890260B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2005 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Oct 20, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/188
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A navigation system that provides a position estimate. In one embodiment, a method includes integrating an acceleration estimate in each of three dimensions. Subtracting a GPS velocity in each of the dimensions from the integrated acceleration estimate in each dimension to determine a velocity noise error in each dimension. Filtering the velocity noise error in each dimension. Adding the filtered velocity noise error to the integrated acceleration estimate in each dimension to obtain a velocity estimate in each dimension. Integrating the velocity estimate in each dimension to determine an integrated velocity estimate in each dimension. Subtracting a GPS position in each dimension from the integrated velocity estimate in each dimension to determine a position noise error in each dimension. Filtering the position noise error in each dimension and adding the filtered position noise error in each dimension to the integrated velocity estimate to obtain a position estimate in each dimension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.