Class / Patent application number | Description | Number of patent applications / Date published |
342357450 | Providing integrity information; e.g., health of satellites or quality of ephemeris data (IPC) | 6 |
20110285586 | GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) REFERENCE STATION INTEGRITY MONITORING AND ASSURANCE - In a method of Global Navigation Satellite System (GNSS) reference station integrity monitoring, network Real Time Kinematic (RTK) information is accessed for a location associated with a GNSS reference station. At least one aspect of GNSS information local to the location of the GNSS reference station is compared with a corresponding aspect of the network RTK information. The results of the comparing are monitored for indication of occurrence of compromise to operational integrity of the GNSS reference station. | 11-24-2011 |
20120062417 | METHOD AND SYSTEM FOR VERIFYING THE PRECISION PERFORMANCE OF A SATELLITE NAVIGATION SYSTEM - A method and a system verifies the precision performance of a satellite navigation system that can certify compliance with a level of precision whatever the observation conditions, notably as regards satellite geometry, and is a performance verification tool for the design, verification and qualification of a satellite navigation system. | 03-15-2012 |
20120206298 | METHOD AND APPARATUS FOR NAVIGATION SYSTEMS - The invention relates to a network element comprising a controlling element for forming assistance data relating to two or more signals transmitted by a reference station of at least one navigation system; and a transmitter for transmitting the assistance data via a communications network to a device. The device comprises a positioning receiver for performing positioning on the basis of two or more signals transmitted by a reference station of the at least one satellite navigation system; a receiver for receiving the assistance data from the network element; and an examining element configured to examine the received assistance data to find out information relating to the status of the two or more signals. The information comprises indication on the reference station the signal relates to, and the status indicates the usability of the signal. | 08-16-2012 |
20130127661 | SATELLITE BASED AUGMENTATION SYSTEM AND SATELLITE BASED AUGMENTATION METHOD - Provided is a satellite based augmentation system comprising: a threshold value calculation unit which calculates a monitoring threshold value for determining whether or not a value of carrier to noise power density ratio (C/No) at a time when a pseudorange is measured on the basis of a signal from a GPS satellite is proper; and a pseudorange determination unit which determines whether or not the pseudorange has proper accuracy by comparing the C/No value and the monitoring threshold value. | 05-23-2013 |
20130271315 | Enhancement of the Integrity Concept of a Satellite Navigation System - A method for determining the integrity risk at an alert limit of a position solution determined with a satellite navigation system involves calculating a first integrity risk at the alert limit assuming that one satellite j of the satellites is faulty. A first position solution is determined with the signals from all of the satellites and a second position solution is determined with the signals from all of the satellites except for the signal received from the satellite j. A difference between the first and the second position solution is identified and subtracted from the alert limit to create a reduced alert limit. A second integrity risk at the reduced alert limit is calculated with the signals received from all satellites except the signal received from the satellite j. The integrity risk at the alert limit is determined using the minimum of the first and second integrity risks. | 10-17-2013 |
20160011315 | METHOD AND APPARATUS FOR POSITION MEASURING OF PORTABLE ELECTRONIC DEVICE | 01-14-2016 |