Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1994-08-08
1996-01-23
Issing, Gregory C.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
370 70, G01S 502, H04J 102
Patent
active
054868343
ABSTRACT:
A receiver embodiment of the present invention comprises a radio frequency section that down-converts frequency division signals received from the several orbiting GLONASS satellites into a composite pseudo-baseband with spectral fold-over, a Nyquist sampling unit for sampling the composite signal at twenty to twenty-five MHz, and a programmable carrier frequency in-phase (I) and quadrature-phase (Q) digital multiplier for sorting through the composite signal to find a particular GLONASS satellite's signal. The particular satellite is identified by comparing almanac and ephemeris information. Cross-correlations between L1 and L2 are performed by a correlation that is integrated over a whole data bit length and a proposed insertion bit is inverted or not inverted according to its sign before further summing.
REFERENCES:
patent: 4463357 (1984-07-01), MacDoran
patent: 5101416 (1992-03-01), Fenton et al.
Lennen, "The USSR'S P-Code--Determination and Initial Results" Proc. of ION GPS-89, 1989.
The USSR'S Glonass P-Code--Determination and Initial Results, by Gary R. Lennen, Proceedings of ION GPS-89, the Second International Technical Mtg. of Satellite Division of the Institute of Navigation, Colorado Springs, Colo., Sep. 27-29, 1989.
Global Satellite Navigation System GLONASS Interface Control Document (Second Wording), Russian Institute of Space Device Engineering/Research, 1991.
Issing Gregory C.
Schatzel Thomas E.
Trimble Navigation Limited
LandOfFree
Global orbiting navigation satellite system receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Global orbiting navigation satellite system receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Global orbiting navigation satellite system receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1507715