Apparatus for and method of improving position and time estimation of radio location devices using calibrated pulse shapes
US7298324B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2005 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Sep 18, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/43
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
GPS receivers utilize reference pulse shapes in operations to determine estimates of position and time to correct for range biases in differential operations and in signal quality operations. The reference pulse shapes may be code family based, or may be calibrated on a per satellite basis, to incorporate therein the affects of the satellite hardware on the transmitted signals. The receivers may further manipulate the calibrated pulse shape models on a per receiver basis, to incorporate therein the affects of the IF and RF paths through the respective receivers. The calibrated reference pulse shapes may also be used in multipath mitigation processing operations for the respective codes, to produce estimates of the direct path signals and corrections for the carrier and code tracking loops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.