Separated GPS sensor and processing system for remote GPS sensin

Details Separated GPS sensor and processing system for remote GPS sensin Separated GPS sensor and processing system for remote GPS sensin

1993-04-05

1995-05-30

Blum, Theodore M.

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

Directive

Including a satellite

H04B 7185, G01S 502

Patent

active

054205921

ABSTRACT:
A rawinsonde system embodiment of the present invention includes a digital GPS snapshot buffer and a serial communications controller for transmitting message frames formed of a combination of digital GPS data from the snapshot buffer and digitized hardwired meteorological data input from a humidity-temperature-pressure instrument. The message frames are telemetered at a relatively low rate over a meteorological radio band to a ground station. Substantially all of the conventional GPS digital signal processing is performed by the ground station, including carrier recovery, PRN code locking, pseudo-range extraction, ephemeris data extraction, almanac collection, satellite selection, navigation solution calculation and differential corrections. Ground processing further includes Kalman filter wind velocity calculation.

REFERENCES:
patent: 5119102 (1992-06-01), Barnard
patent: 5185610 (1993-02-01), Ward et al.
patent: 5323322 (1994-06-01), Mueller et al.
patent: 5347285 (1994-09-01), MacDoran et al.

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