Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2007-07-03
2007-07-03
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
C342S357490
Reexamination Certificate
active
10776319
ABSTRACT:
An apparatus for calculating satellite acquisition information for controlling a position determination entity (PDE) to determine a position of the MS in a network assisted GPS system comprising an MS containing a GPS receiver and the PDE containing a reference station GPS receiver, the apparatus comprising a satellite data collector for collecting satellite orbital information transferred from a plurality of satellites to the reference station GPS receiver; a pseudo range calculator for receiving the satellites' position coordinates calculated based on the satellite orbital information and calculating a pseudo range between the MS and a satellite observed by the MS using the received information; a pseudo velocity calculator for receiving satellites' velocity information calculated based on the satellite orbital information; and a satellite acquisition information calculator for calculating a code phase using the pseudo range, calculating a Doppler shift using the pseudo velocity, and calculating the satellite acquisition information containing the code phase and the Doppler shift.
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Jung Jae-Young
Kum Dong-Jun
Won Eun-Tae
Mull Fred H.
Roylance Abrams Berdo & Goodman LLP
Tarcza Thomas H.
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