Patents by Inventor Arthur S. Loh

Arthur S. Loh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Mobile terminal antenna alignment using arbitrary orientation attitude
    Patent number: 10763579
    Abstract: Systems and methods for aligning a satellite antenna mounted on a mobile platform to the platform. At each of several arbitrary orientations, a first directional vector is determined from the antenna to a satellite. For each orientation, an alias transformation is performed to transform the first vector having coordinates defined with respect to a first reference frame to a second vector having coordinates defined with respect to a second reference frame. A third vector is determined based on the orientation of the antenna after peaking the antenna. A rotation matrix is derived from the collection of second and third vectors. An estimate of the rotational offset of the satellite antenna with respect to the platform is determined based on the rotation matrix. The rotational offset is applied to the attitude of the platform to accurately point the antenna to the satellite.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: September 1, 2020
    Assignee: Viasat, Inc.
    Inventors: Brian T. Sleight, David H. Schmitz, Clifford K. Burdick, Arthur S. Loh
  • MOBILE TERMINAL ANTENNA ALIGNMENT USING ARBITRARY ORIENTATION ATTITUDE
    Publication number: 20190319353
    Abstract: Systems and methods for aligning a satellite antenna mounted on a mobile platform to the platform. At each of several arbitrary orientations, a first directional vector is determined from the antenna to a satellite. For each orientation, an alias transformation is performed to transform the first vector having coordinates defined with respect to a first reference frame to a second vector having coordinates defined with respect to a second reference frame. A third vector is determined based on the orientation of the antenna after peaking the antenna. A rotation matrix is derived from the collection of second and third vectors. An estimate of the rotational offset of the satellite antenna with respect to the platform is determined based on the rotation matrix. The rotational offset is applied to the attitude of the platform to accurately point the antenna to the satellite.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 17, 2019
    Inventors: Brian T. Sleight, David H. Schmitz, Clifford K. Burdick, Arthur S. Loh
  • Mobile terminal antenna alignment using arbitrary orientation attitude
    Patent number: 10320073
    Abstract: Systems and methods for aligning a satellite antenna mounted on a mobile platform to the platform are disclosed. At each of several arbitrary orientations, a first directional vector is determined from the antenna to a satellite. For each orientation, an alias transformation is performed to transform the first vector having coordinates defined with respect to a first reference frame to a second vector having coordinates defined with respect to a second reference frame. A third vector is determined based on the orientation of the antenna after peaking the antenna. A rotation matrix is derived from the collection of second and third vectors. An estimate of the rotational offset of the satellite antenna with respect to the platform is determined based on the rotation matrix. The rotational offset is applied to the attitude of the platform to accurately point the antenna to the satellite.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: June 11, 2019
    Assignee: Viasat, Inc.
    Inventors: Brian T. Sleight, David H. Schmitz, Clifford K. Burdick, Arthur S. Loh
  • Mobile Terminal Antenna Alignment Using Arbitrary Orientation Attitude
    Publication number: 20150200449
    Abstract: Systems and methods for aligning a satellite antenna mounted on a mobile platform to the platform. At each of several arbitrary orientations, a first directional vector is determined from the antenna to a satellite. For each orientation, an alias transformation is performed to transform the first vector having coordinates defined with respect to a first reference frame to a second vector having coordinates defined with respect to a second reference frame. A third vector is determined based on the orientation of the antenna after peaking the antenna. A rotation matrix is derived from the collection of second and third vectors. An estimate of the rotational offset of the satellite antenna with respect to the platform is determined based on the rotation matrix. The rotational offset is applied to the attitude of the platform to accurately point the antenna to the satellite.
    Type: Application
    Filed: January 12, 2015
    Publication date: July 16, 2015
    Inventors: Brian T. Sleight, David H. Schmitz, Clifford K. Burdick, Arthur S. Loh