Method and apparatus for determining smoothed code...

Details Method and apparatus for determining smoothed code... Method and apparatus for determining smoothed code...

2006-05-05

2008-10-21

Tarcza, Thomas H. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

C342S357490, C342S357490

Reexamination Certificate

active

07439908

ABSTRACT:
Disclosed is a method for determining coordinates of a mobile rover. The method includes determining a vector of one-shot code coordinates of the mobile rover. The method also includes determining a vector of phase increments by determining full phase differences for each navigation satellite in a plurality of navigation satellites in view at a discrete time interval (called a time epoch) and at a previous time epoch in a plurality of time epochs. A vector of radial range increments is determined from the full phase differences. A vector of rover phase coordinate increments is also determined using the vector of radial range increments. The vector of one-shot code coordinates and the vector of rover phase coordinate increments are then filtered to determine, at each time epoch, smoothed code coordinates of the mobile rover. Measured phase increments are cleared up from abnormal measurements.

REFERENCES:
patent: 6191732 (2001-02-01), Carlson et al.
patent: 2006/0017611 (2006-01-01), Hatch et al.
patent: 2006/0071849 (2006-04-01), Howle et al.

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