Apparatus for and method of improving position and time...

Details Apparatus for and method of improving position and time... Apparatus for and method of improving position and time...

2007-11-20

2007-11-20

Tarcza, Thomas H. (Department: 3662)

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

Directive

Including a satellite

C342S357490

Reexamination Certificate

active

11145442

ABSTRACT:
GPS receivers utilize reference pulse shapes in operations to determine estimates of position and time to correct for range biases in differential operations and in signal quality operations. The reference pulse shapes may be code family based, or may be calibrated on a per satellite basis, to incorporate therein the affects of the satellite hardware on the transmitted signals. The receivers may further manipulate the calibrated pulse shape models on a per receiver basis, to incorporate therein the affects of the IF and RF paths through the respective receivers. The calibrated reference pulse shapes may also be used in multipath mitigation processing operations for the respective codes, to produce estimates of the direct path signals and corrections for the carrier and code tracking loops.

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patent: 0892277 (1999-01-01), None

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