LAAS ground facility sigma monitor

Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07019688

ABSTRACT:
A 1-sigma pseudorange ground monitor (sigma monitor) is described. The sigma monitor calculates a weighted sum of squared deviations referred to as the discriminator for one or several reference receiver for a specific time period. The sigma monitor also calculates an alert threshold based on the chi-square or near chi-square probability distributions for one or several reference receivers and for the specific time period. The sigma monitor then compares the discriminator with the alert or alarm threshold. If the discriminator is greater than the alert or alarm threshold, an alert or alarm is issued and logged.

REFERENCES:
patent: 6332070 (2001-12-01), Bochmann et al.
patent: 6347113 (2002-02-01), Hatch
patent: 6380888 (2002-04-01), Kucik
patent: 6392589 (2002-05-01), Rogers et al.
patent: 6429808 (2002-08-01), King et al.
patent: 6559793 (2003-05-01), Eschenbach
patent: 6847893 (2005-01-01), Lupash
patent: 2002/0062193 (2002-05-01), Lin
patent: 2002/0167441 (2002-11-01), McBurney et al.
Braff, Ronald, “LAAS Perfomance for Terminal Area Navigation” The MITRE Corporation Center for Advanced Aviation System Development (CAASD), McLean, VA 22102.
Frank van Grass, Ph.D. “Development and Applications of Satellite-Based Services” Avionics Engineering Center, School of Electrical Engineering and Computer Science, Russ College of Engineering and Technology, Ohio University, Athens, Ohio. Aug. 2000.
Hartman, Randy “Precision Approach Using Differential GPS” Honeywell.
Miller, Jim, “LAAS Government Industry Partnership”.
Lamb, Dave et al., “Development of Local Area Augmentation System Siting Criteria”.
Lee, Jiyun, et al. “LAAS Sigma-Mean Monitor Analysis and Failure-Test Verification” Printed from http://WAAS.Stanford.edu/˜wwu/papers/gps/PDF/jiyunionam01.pdf. on Dec. 17, 2003.
Lewison, George, “Honeywell's Differential GPS Satellite Landing System” Avionic News, Sep. 1996.
Normark, Per-Ludvig, “Ground Facility Prototype Development to Support High-Integrity Aircraft Approach and Landing Using GPS” Stanford University Spring 2001.
Shively, Curtis A., “Preliminary Analysis of Requirements for Cat IIIB LAAS” The MITRE Corporation, Center for Advanced Aviation System Development, McLean, VA 22102.
United States Department of Transportation Federal Aviation and Administration, Specification FAA-E-2937A, Category I, Local Area Augmentation System Ground Facility, Apr. 17, 2002.
Warbuton, John et al., “Validation of the FAA LAAS Specification Using the LAAS Test Prototype (LTP)”.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

LAAS ground facility sigma monitor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with LAAS ground facility sigma monitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LAAS ground facility sigma monitor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3607022

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.