Browse Prior Art Database

GLOBAL POSITIONING SYSTEM DIGITAL SPHERICAL COVERAGE

IP.com Disclosure Number: IPCOM000006352D
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2001-Dec-27
Document File: 3 page(s) / 127K

Publishing Venue

Motorola

Related People

Authors:
S. J. Sheard

Abstract

PROBLEM SOLVED Global Positioning System (GPS) receivers operating on an airplane need to be able to receive satellite signals in all tlight modes. Spherical tracking of GPS satellites by a GPS receiver on an airplane is currently accomplished by multi- ple antennae feeding into coupler circuits or special antenna. switching networks. GPS receiver operation without mul- tiple antennae is possible but signal acquisition is lost dur- ing maneuvering due to antennae not having full spherical coverage because of signal blockage by the airframe.