ADJUSTABLE CLOCK OF GPS RECEIVER USING DRIFT ESTIMATE DERIVED FROM SATELLITE SIGNAL

Japanese Patent JP2013253985

A

To adjust processor clock information for the amount of drift in the processor clock information on the basis of global positioning satellite information, and generate a navigation solution by using the adjusted processor clock information.

A navigation system 100 comprises a global positioning satellite receiver 114 to receive at least one global positioning satellite signal and to output global positioning satellite information. The navigation system further comprises a programmable processor 104, communicatively coupled to the global positioning satellite receiver, to execute software. The navigation system further comprises a clock 112, communicatively coupled to the programmable processor, to output processor clock information. The software 106 estimates an amount of drift in the processor clock information using the GPS information, and adjusts the processor clock information for the amount of drift in order to generate adjusted processor clock information. The software generates a navigation solution 102 as a function of at least the global positioning satellite information and the adjusted processor clock information.

JEFFREY R RING
SCOTT SNYDER
CRAIG P ALLEN

JP2013147444A

December 19, 2013

July 16, 2013

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HONEYWELL INT INC

G01S19/21; G01C21/28; G01S19/23; G01S19/26

JP2001242235A	2001-09-07
JP2004077147A	2004-03-11
JP2002303533A	2002-10-18
JPH06341847A	1994-12-13
JP2000508076A	2000-06-27
JP2005521863A	2005-07-21
JP2003043129A	2003-02-13

US4754280A	1988-06-28
US5319374A	1994-06-07
US5828336A	1998-10-27

Shinjiro Ono
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Fumitoshi Nishiyama

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