1
Jack Kuipers: Tracking and determining orientation of object using coordinate transformation means, system and process. Polhemus Navigation Sciences, Price Heneveld Huizenga & Cooper, September 28, 1976: US03983474 (243 worldwide citation)

An electromagnetic field which nutates about a pointing vector is used to both track or locate a remote object in addition to determining the relative orientation of the object. Apparatus for generating such a field includes mutually orthogonal dipole radiators, defining a reference coordinate frame ...


2
Jack Kuipers: Method and apparatus for determining remote object orientation and position. McDonnell Douglas Corporation, Price Heneveld Cooper DeWitt & Litton, May 3, 1988: US04742356 (221 worldwide citation)

A method and apparatus is provided for determining remote object orientation and position with an electromagnetic coupling. A plurality of radiating antennas are provided for radiating electromagnetic energy. Each of the radiating antennas have independent components for defining a source reference ...


3
Jack Kuipers: Apparatus for generating a nutating electromagnetic field. Polhemus Navigation Sciences, Price Heneveld Huizenga & Cooper, April 12, 1977: US04017858 (202 worldwide citation)

A field (e.g., a magnetic field) which nutates about a pointing vector is used to both track or locate an object in addition to determining the relative orientation of this object. Apparatus for generating such a field includes mutually orthogonal coils and circuitry for supplying an unmodulated car ...


4
Jack Kuipers: Method and apparatus for tracking objects. The Austin Company, Price Heneveld Huizenga & Cooper, November 3, 1981: US04298874 (125 worldwide citation)

Two spaced bodies, each including at least two independently oriented radiating antennas, are in communication with each other by such means as an electromagnetic field. The first body receives radiation transmitted from the second body and establishes the pointing angles to the second body with res ...