The Aerospace Corporation

Gan-Tai Tseng

Jo-Lien Yang

Steven Lloyd Johns

Cheng A Wu

James P McKay

Philip Roger Dahl

Michael Shigeru Yonezaki

James Chun-Hsiang Liau

Shih-Chieh Leung

A receiving system includes a combiner configured to receive signals from two or more antenna elements and to generate sum and difference outputs, and a switch configured to sequentially provide the sum and difference outputs as inputs to a receiver.

Switched combiner GPS receiver system

A method and system for determining three-axis attitude from line-of-sight (LOS) solutions for two or more GPS satellites uses intersections of null cone patterns and LOS vectors to the GPS satellites. In a preferred embodiment, a unified GPS-based sensor also provides navigation information.

Method and system using a GPS-based phased-array scheme for three-axis attitude determination

A pair of patch antennas are used to form a null slit antenna pattern for receiving GPS signals from at least three GPS satellites functioning as pseudo stars for spin rate and spin axis attitude determination for a spinning space vehicle in an earth orbit below the GPS satellites.

GPS patch antenna attitude reference system

A null slit antenna pattern receives GPS signals from at least three GPS satellites functioning as pseudo stars for spin rate and spin axis attitude determination of a spinning space vehicle in an earth orbit below the GPS satellites.

Growing community of inventors

Rancho Palos Verdes, CA, United States of America

Gan-Tai Tseng