Patent ID: 7489271
Filing Date: 2009-02-10
Classification: H01Q

Abstract:
1. A global positioning system (GPS)-at-geosynchronous earth orbit (GEO) system for acquiring and tracking GPS signals and navigating a GEO spacecraft based on the GPS signals, the system comprising: a conical mode receive antenna configured to receive GPS signals including side-lobe signals, the conical mode receive antenna configured to operate in a conical mode, the conical mode antenna configured to provide a higher gain in a side-lobe region of a GPS signal than in a main-beam region of a GPS signal or at Nadir; a GPS receiver having an input and an output, the input of the GPS receiver configured to receive GPS signals from the conical mode receive antenna, the GPS receiver configured to track the GPS signals and to provide navigation data for a GEO spacecraft; and a processor having an input and an output, the input of the processor configured to receive the navigation data, the processor configured to process the navigation data for the GEO spacecraft.