Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2009-03-11
2011-12-27
Phan, Dao (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
C342S357230
Reexamination Certificate
active
08085196
ABSTRACT:
A method for removing biases in dual frequency GNSS receivers circumvents the need for ionosphere corrections by using L2(P) in combination with either L1(P) or L1(C/A) to form ionosphere-free ranges. A table of biases is stored in microprocessor controller memory and utilized for computing a location using corrected ionosphere-free pseudo ranges. A system for removing biases in dual frequency GNSS receivers includes a dual frequency GNSS receiver and a controller microprocessor adapted to store a table of bias values for correcting pseudo ranges determined using L2(P) in combination with either L1(P) or L1(C/A).
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Brown Mark E.
Hemisphere GPS LLC
Law Office of Mark Brown LLC
Phan Dao
LandOfFree
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