Craig M Allen

US Patent:

7889125, Feb 15, 2011

Filed:

Mar 15, 2005

Appl. No.:

11/080345

Inventors:

Jeffrey R. Ring - Palm Harbor FL, US
Craig P. Allen - Clearwater FL, US
Scott Snyder - Mahtomedi MN, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

G01S 19/38

US Classification:

34235721

Abstract:

A navigation system comprises a global positioning satellite receiver to receive at least one global positioning satellite signal and to output global positioning satellite information. The navigation system further comprises a programmable processor, communicatively coupled to the global positioning satellite receiver, to execute software. The navigation system further comprises a clock, communicatively to the programmable processor, to output processor clock information. The software 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 as a function of at least the global positioning satellite information and the adjusted processor clock information.

US Patent:

20050162794, Jul 28, 2005

Filed:

Oct 21, 2004

Appl. No.:

10/969048

Inventors:

David Donnelly - Largo FL, US
Charles Green - Palm Harbor FL, US
John Lintz - Dunedin FL, US
Craig Allen - Clearwater FL, US

International Classification:

H02H003/08

US Classification:

361093100

Abstract:

A method for mitigating harmful radiation effects on at least one electrical component are disclosed. In a first preferred embodiment, power drawn by the electrical component, such as a GPS receiver, is monitored and compensated by an offset for expected variations due to temperature. When current drawn by the GPS receiver is higher than expected during operation at a given temperature, power to the electrical component is interrupted. Alternatively, or in addition thereto, a second preferred embodiment includes monitoring communications from the GPS receiver. When communications cease or fall below an acceptable level for a predetermined period of time, power to the electrical component is interrupted.