Reliability and the accuracy of position-finding methods by estimation of the Rice factor of a radio link

US7248218B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Andreas Schmid · Duisburg, DE
• Andre Neubauer · Krefeld, DE

Key dates

• Filing date: Jun 7, 2005
• Grant date: Jul 24, 2007
• Expiry date: Jun 7, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S19/428
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In order to improve the reliability and the accuracy of a position-finding method such as the GPS method, the quality of a radio link which is used for the position-finding method is determined by estimating a parameter, in particular the Rice factor of the amplitude distribution density, which is characteristic of the ratio of the strength of a signal transmitted via a line-of-sight path, with respect to the strength of the signals transmitted via non-line-of-sight paths.