Method for reducing inter-frequency bias effects in a receiver
US6608998B1 · kind B1 · utility
17Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2000 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | Jan 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/33
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A calibration procedure for reducing frequency-dependent bias effects in a fixed satellite-based ground-positioning receiver is disclosed, the receiver having the capability to receive both GPS and GLONASS satellite signals. The calibration procedure removes satellite dynamics by utilizing the respective satellite ephemeris data, estimates the change in receiver clock offset by means of GPS measurements, and acquires a set of two or more GLONASS pseudorange measurements while cycling a local oscillator in the receiver through a predetermined sequence of different frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.