System and method for high dynamic acquisition and tracking of signals from the global positioning system
US8031112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2005 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Dec 13, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0065
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of acquiring a signal includes generating a first set of acquired signal power values comprising an acquired signal power value for each of a plurality of Doppler bins over a first predetection integration time (PIT) interval, and generating a second set of acquired signal power values comprising an acquired signal power value for each of the plurality of Doppler bins over a second subsequent PIT interval. The first and the second sets are used to generate at least three additional sets of acquired signal power values. A new set is generated by selecting the maximum of the summations for each Doppler bin from the three additional sets, and a Doppler shift is identified from the Doppler bin having the maximum summation value. The output may be used to initialize a first and a second extended Kalman filters for tracking a carrier signal and a code signal, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.