Abstract: A method and system are disclosed for providing WAAS like corrections using a server and processor on the Internet. For one method, satellite measurement data is collected. Satellite position error corrections are computed using the collected satellite measurement data. The computed satellite position error corrections are stored. The stored satellite position error corrections can then be later retrieved and used by a server and processor on the Internet.

Abstract: A method and system that provide WAAS like corrections using a server and processor on a network. For one method, satellite measurement data is collected. Satellite position error corrections are computed using the collected satellite measurement data. The computed satellite position error corrections are stored. The stored satellite position error corrections can then be later retrieved and used by a server and processor coupled to the Internet.

Abstract: An infrastructure for implementing DGPS virtual reference stations is disclosed. The virtual reference station infrastructure is comprised of a network of real DGPS reference stations coupled to a central computer system. The real DGPS reference stations may be coupled to the central computer by a set of radio receivers that transmit the pseudorange corrections from each real reference station to the central computer system. The central computer system processes the pseudorange corrections from all the real DGPS reference stations to generate a dynamic satellite error vector and a clock error for each satellite. The dynamic satellite error vector and satellite clock error for each satellite are transmitted to plurality of “virtual” references stations. The virtual reference stations combine the dynamic satellite error vector and the satellite clock error with a local position to generate the local pseudorange corrections (PRC) for the observable satellites.

Abstract: The present invention comprises a global positioning system (GPS) based augmented reality (AR) aircraft collision avoidance system. The system of the present invention includes a GPS receiver for receiving GPS signals and determining a present position using the GPS signals. The system of the present invention also includes an automatic dependent surveillance (ADS-B) receiver for receiving an ADS-B signal from an aircraft. The system of the present invention further includes an AR visor coupled to both the GPS receiver and the ADS-B receiver. The AR visor receives the present position from the GPS receiver and receives the ADS-B signal from the ADS-B receiver. Using the present position and the ADS-B signal, the AR visor determines a three dimensional bearing to the aircraft. The AR visor is adapted to be worn by a user.

Abstract: The present invention comprises a global positioning system (GPS) based augmented reality (AR) aircraft collision avoidance system. The system of the present invention includes a GPS receiver for receiving GPS signals and determining a present position using the GPS signals. The system of the present invention also includes an automatic dependent surveillance (ADS-B) receiver for receiving an ADS-B signal from an aircraft. The system of the present invention further includes an AR visor coupled to both the GPS receiver and the ADS-B receiver. The AR visor receives the present position from the GPS receiver and receives the ADS-B signal from the ADS-B receiver. Using the present position and the ADS-B signal, the AR visor determines a three dimensional bearing to the aircraft. The AR visor is adapted to be worn by a user.

Abstract: A method for fast acquisition, in as little as 6-15 seconds, of signals from a satellite in a Satellite Positioning System (SATPS), such as GPS or GLONASS, that does not require permanent storage of satellite ephemeris information at an SATPS ground station. This SATPS signal acquisition method can be used whenever the "new" station initially powers up or has lost lock on one or more SATPS signals that must be (re)acquired. A reference SATPS station provides the new SATPS station with an estimated reference station location and ephemeris information for one or more identified SATPS satellites visible from the reference station. The new station receives and uses this information to establish carrier frequency ranges to search for the identified SATPS satellite, by limiting the search to a reduced frequency range based upon estimated Doppler shift of SATPS signals received from this satellite.

Abstract: A method for fast acquisition, in as little as 6-15 seconds, of signals from a satellite in a Satellite Positioning System (SATPS), such as GPS or GLONASS, that does not require permanent storage of satellite ephemeris information at an SATPS ground station. This SATPS signal acquisition method can be used whenever the “new” station initially powers up or has lost lock on one or more SATPS signals that must be (re)acquired. A reference SATPS station provides the new SATPS station with an estimated reference station location and ephemeris information for one or more identified SATPS satellites visible from the reference station. The new station receives and uses this information to establish carrier frequency ranges to search for the identified SATPS satellite, by limiting the search to a reduced frequency range based upon estimated Doppler shift of SATPS signals received from this satellite.