Analog decorrelation of ranging signals
US7339524B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2004 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Jun 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a local positioning system, a receiver is adapted for receiving signals from a land-based transmitter. The receiver includes an analog decorrelator for decorrelating the transmitted spread spectrum signals. A down converter connected with an antenna may be spaced away from other portions of the receiver. The down converter down converts received ranging signals and provides them to the remotely spaced receiver portions. A signal line connecting the down converter to the receiver may be operable to transmit any two or more of a reference signal provided to the down converter, the down converted intermediate frequency signals provided to the receiver, and power provided to the down converter. The receiver may be positioned adjacent to or as part of a land-based transmitter. By determining positions of two or more antennas, the location of the associated transmitter is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.