Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1995-06-02
1996-12-17
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
G01S 502
Patent
active
055858007
ABSTRACT:
The system for location-correction for removing the sun-induced effects in the global positioning system (GPS) caused by the problem of transforming the frequency of coherent radio signals to the geocentric inertial coordinate frame involves an implicit, dependence on earth-sun-clock orientation. This is accomplished by determining the systematic errors associated with sun-induced effects that alter the frequency of the transmission of every satellite within the GPS because of the GPS satellites orbit around both the sun and the earth and applying a correction factor to the initially determined position to obtain the true position within 10 cm to one meter.
REFERENCES:
patent: 5148179 (1992-09-01), Allison
patent: 5359521 (1994-10-01), Kyrtsos et al.
patent: 5379224 (1995-01-01), Brown et al.
Chubb, "Sun-Induced Variations In Time In The Global Positioning System", Astrophysics and Space Tech., vol. 213, pp. 63-73.
Kee et al., "Wide Area Differential GPS", variation, pp. 123-143, 1991.
Weiss, "Apparatus Diurnal Effects In The Global Positioning System", IEEE Trans. Instr. and Meas., vol. 38, No. 5, pp. 991-993, 1989.
Milliken et al., "Principle Of Operation Of Navstar And System Characteristics", Navigation, vol. 25, No. 2, pp. 95-106, 1978.
Spiker, "GPS Signal Structure And Performance Characteristics", Navigation, vol. 25, No. 2, pp. 121-146.
VanDiereddoner et al., "The GPS Navigation Message", Navigation, vol. 28, No. 2, pp. 147-165, 1978.
Martin, "GPS User Equipment Error Models", Navigation, vol. 25, No. 2, pp. 201-210, 1978.
Copps "An Aspect Of The Roe Of The Clock In A GPS Receiver", Navigation, vol. 31, No. 3, pp. 233-242, 1984.
Smith et al., "Sensitivity GPS Acquisition To Initial Data Uncertainties", Navigation, vol. 31, No. 3, pp. 220-232, 1984.
Knable et al., "Clock Coasting And Acetimeter Error Analysis For GPS", Navigation, vol. 31, No. 4, pp. 289-302, 1984.
Robbins, "Reference Trajectories From GPS Measurements", Navigation, vol. 35, No. 1, pp. 89-103, 1988.
Blair, "Time And Frequency: Theory And Fundamentals", Nat. Bur. Of STDS, Ch. 8, pp. 151-209, 1974.
Russel et al., "Control Segment And User Performance", Navigation, vol. 25, No. 2, pp. 166-172, 1978.
Phan Dao L.
Tarcza Thomas H.
LandOfFree
Location-corrector for removing sun-induced effects in the globa does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Location-corrector for removing sun-induced effects in the globa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Location-corrector for removing sun-induced effects in the globa will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1994684