The Boeing Company

Michael A Rizzo

David Arthur Whelan

Rongsheng Li

Gregory M Gutt

Per Kristian Enge

Kamran Ghassemi

Richard T Cervisi

Bart Ferrell

James C Lassa

Jeff R Bennett

Johathan A Tekawy

A method, system, and apparatus are disclosed for multipath isolation through the combined use of antenna diversity and frequency diversity. In particular, the present disclosure utilizes antenna diversity and frequency diversity to combat the deleterious effects of reflected signals on the positioning accuracy of satellite navigation systems. In at least one embodiment, the present disclosure uses two antennas and two frequencies for operation with a satellite navigation system. The present disclosure segregates the antennas and frequencies into two classes: references and monitors. The reference measurements are used for estimating the state of the vehicle, and the monitor measurements are used to detect faults that might degrade the reference estimation. Thus, the present disclosure enables an improvement in the positioning error experienced by roving users in downtown and indoor environments. Applications include positive train control, aircraft surface guidance, marine craft navigation in canals and ports, as well as automotive lane keeping.

Multipath isolation through the combined use of antenna diversity and frequency diversity

Growing community of inventors

Orange, CA, United States of America

Michael A Rizzo