Patents by Inventor Nestor Zarraoa Lopez

Nestor Zarraoa Lopez 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).

  • GNSS navigation solution integrity in non-controlled environments
    Patent number: 8131463
    Abstract: Disclosed is a method for providing a Global Navigation Satellite System (GNSS) navigation position solution with guaranteed integrity in non-controlled environments, the method including processing a (GNSS) signal including multiple satellites generating at least one signal to obtain carrier phase and pseudorange measurements; pre-processing the measurements to detect and characterize local errors in the measurements, wherein the local errors cannot be ascertained a priori, the characterization including providing error bounds estimated by measuring the carrier phase and pseudoranges measurements, thereby providing a set of measurements rejections when the characterization is not possible; and using the estimated error bounds, together with error bounds provided by the GNSS signal concerning satellite and ionospheric errors, to build in each measurement an estimated noise level in the measurements as input to a weighted Receiver Autonomous Integrity Monitoring (RAIM) algorithm in order to compute position co
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: March 6, 2012
    Assignee: GMV Aerospace and Defence, S.A.
    Inventors: Nestor Zarraoa Lopez, Juan Ramon Martin Piedelobo, Manuel Toledo Lopez, Joaquin Cosmen Schortmann
  • GNSS NAVIGATION SOLUTION INTEGRITY IN NON-CONTROLLED ENVIRONMENTS
    Publication number: 20100033370
    Abstract: Disclosed is a method for providing a Global Navigation Satellite System (GNSS) navigation position solution with guaranteed integrity in non-controlled environments, the method including processing a (GNSS) signal including multiple satellites generating at least one signal to obtain carrier phase and pseudorange measurements; pre-processing the measurements to detect and characterize local errors in the measurements, wherein the local errors cannot be ascertained a priori, the characterization including providing error bounds estimated by measuring the carrier phase and pseudoranges measurements, thereby providing a set of measurements rejections when the characterization is not possible; and using the estimated error bounds, together with error bounds provided by the GNSS signal concerning satellite and ionospheric errors, to build in each measurement an estimated noise level in the measurements as input to a weighted Receiver Autonomous Integrity Monitoring (RAIM) algorithm in order to compute position co
    Type: Application
    Filed: February 26, 2009
    Publication date: February 11, 2010
    Applicant: GMV Aerospace and Defence, S.A.
    Inventors: Nestor Zarraoa Lopez, Juan Ramon Martin Piedelobo, Manuel Toledo Lopez, Joaquin Cosmen Schortmann