Distance measurement between two nodes of a radio network

US8965301B2 · kind B2 · utility

Assignee

• Atmel Corporation · US

Inventors

• Wolfram Kluge · Dresden, DE
• Eric Sachse · Leipzig, DE

Key dates

• Filing date: Feb 3, 2014
• Grant date: Feb 24, 2015
• Expiry date: Feb 3, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S13/84
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method includes transmitting, by a first node, a first carrier signal and receiving, from a second node, which receives the first carrier signal, a second carrier signal. The first node measures first and second values of a first phase, the first value assigned to a first frequency of the second carrier signal and the second value assigned to a second frequency of the second carrier signal. The first and second frequencies have a frequency difference. A third value of a second phase is assigned to a third frequency of the first carrier signal, and a fourth value of the second phase is assigned to a fourth frequency of the first carrier signal. The third and fourth frequencies have the frequency difference. A distance between the first and second nodes is determined from the frequency difference from the first and second values and from the third and fourth values.