Patents by Inventor Timothy Schempp

Timothy Schempp 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).

  • Single frequency user ionosphere system and technique
    Patent number: 8344946
    Abstract: A method and apparatus for directly estimating depleted ionosphere delay in a GPS receiver and using the estimate for improved navigation precision in satellite based augmentation systems.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: January 1, 2013
    Assignee: Raytheon Company
    Inventors: Gregory S. Um, Mark Wayne Biggs, Timothy Schempp
  • Single Frequency User Ionosphere System and Technique
    Publication number: 20110050492
    Abstract: A method and apparatus for directly estimating depleted ionosphere delay in a GPS receiver and using the estimate for improved navigation precision in satellite based augmentation systems.
    Type: Application
    Filed: August 23, 2010
    Publication date: March 3, 2011
    Applicant: RAYTHEON COMPANY
    Inventors: Gregory S. Um, Mark Wayne Biggs, Timothy Schempp
  • Methods and apparatus for evaluating operational integrity of a data processing system using moment bounding
    Publication number: 20050015680
    Abstract: Mechanisms and techniques provide a system to evaluate operational integrity of a data processing system such as an area augmentation system by obtaining at least one set of distribution data related to information processed by the data processing system. The set(s) of distribution data can include corrections information and integrity bounds information related to the corrections information. The system applies a moment generating function to the set of distribution data to produce a moment bounded distribution data result and compares the moment bounded distribution data result to an integrity limit to determine if the data processing system operates within an acceptable integrity threshold. The system can be used in real-time or non-real time with sets of distribution data that are non-Gaussian, non-symmetric and/or non-unimodal.
    Type: Application
    Filed: September 25, 2002
    Publication date: January 20, 2005
    Inventors: Arthur Rubin, Timothy Schempp