Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2007-10-30
2007-10-30
Issing, Gregory C. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
Reexamination Certificate
active
11187244
ABSTRACT:
A method, apparatus and article of manufacture provide ionospheric ground-truth measurements for use in a wide-area augmentation system (WAAS). Ionospheric pseudorange/code and carrier phase data as primary observables is received by a WAAS receiver. A polynomial fit is performed on the phase data that is examined to identify any cycle slips in the phase data. The phase data is then leveled. Satellite and receiver biases are obtained and applied to the leveled phase data to obtain unbiased phase-leveled ionospheric measurements that are used in a WAAS system. In addition, one of several measurements may be selected and data is output that provides information on the quality of the measurements that are used to determine corrective messages as part of the WAAS system.
REFERENCES:
patent: 5621646 (1997-04-01), Enge et al.
patent: 5828336 (1998-10-01), Yunck et al.
patent: 6469663 (2002-10-01), Whitehead et al.
patent: 7031730 (2006-04-01), Barber et al.
patent: 2004/0204852 (2004-10-01), Robbins
Komjathy Atfila et al: “On the Ionospheric Impact of Recent Storm Events on Satellite-Based Augmentation Systems in Middle and Low-Latitude Sectors” Proc. Ion GPS/GNSS 2003, Portland, OR, USA, Sep. 9, 2003, pp. 2769-2776.
Fraile-Ordonez Jose: “Real-time TEC determination for ionospheric modeling in WADGPS” Proc Ion GPS;□□Proceedings of Ion GPS 1995 Inst of Navigation, Alexandria, VA, USA, vol. 2, 1995, pp.□□1193-1197.
Komjathy Attila et al: “On the Ionospheric Impact of Recent Storm Events on Satellite-Based Augmentation Systems in Middle and Low-Latitude Sectors” Proc. Ion GPS/GNSS 2003, Portland, OR, USA, Sep. 9, 2003 pp. 2769-2776, XP002385758.
Fraile-Ordonez Jose: “Real-time TEC determination for ionospheric modeling in WADGPS” Proc Ion GPS; Proceedings of Ion GPS 1995 Inst of Navigation, Alexandria, VA, USA, vol. 2, 1995, pp. 1193-1197, XP002385759.
Smith D A: “Computing unambiguous TEC and ionospheric delays using only carrier phase data from NOAA's CORS network” Position Location and Navigation Symposium, 2004. Plans 2004 Monterey, CA, USA Apr. 26-29, 2004, Piscataway, NJ, USA, IEEE, US, Apr. 26, 2004, pp. 527-537, XP010768917 ISBN: 0-7803-8416-4.
Komjathy Attila et al: “The ionospheric impact of the Oct. 2003 storm event on WAAS” Proc. Int. Tech. Meet. Satell. Div. Inst. Navig. Ion GNSS; Proceedings of the 17th International Technical Meeting of the Satellite Division of the Institute of Navigation, Ion GNSS 2004; Proceedings of the 17th International Technical Meetings of the, 2004, pp. 1298-1307, XP002385760.
Iijima, B.A., I.L. Harris, C.M. Ho, U.J. Lindqwister, A.J. Mannucci, X. Pi, M.J. Reyes, L. C. Sparks, B.D. Wilson (1999). “Automated Daily Process for Global Ionospheric Total Electron Content Maps and Satellite Ocean Altimeter Ionospheric Calibration Based on Global Positioning System.” Journal of Atmospheric and Solar-Terrestrial Physics, vol. 61, pp. 1205-1218.
Komjathy, A. (1997). Global Ionospheric Total Electron Content Mapping Using the Global Positioning System. Ph.D. dissertation. Department of Geodesy and Geomatics Engineering Technical Report No. 188, University of New Brunswick, Fredericton, New Brunswick, Canada, 248 pp.
Komjathy, A., B.D. Wilson, T.F. Runge, B.M. Boulat, A.J. Mannucci, L. Sparks and M.J. Reyes (2002). “A New Ionospheric Model for Wide Area Differential GPS: The Multiple Shell Approach.” On the CD-ROM of the Proceedings of the National Technical Meeting of the Institute of Navigation, San Diego, CA, Jan. 28-30.
Lawson, C. (1984). “A Piecewise C2 Basis for Function Representation over a Surface of a Sphere.” JPL internal document.
Mannucci, A.J., B.D. Wilson, D.N. Yuan, C.H. Ho, U.J. Lindqwister and T.F. Runge (1998). “A Global Mapping Technique for GPS-derived Ionospheric Total Electron Content Measurements.” Radio Science, vol. 33, pp. 565-582.
Mannucci A.J., B.A. Iijima, L. Sparks, X. Pi, B.D. Wilson and U.J. Lindqwister (1999). “Assessment of Global TEC Mapping Using a Three-Dimensional Electron Density Model.” Journal of Atmospheric and Solar Terrestrial Physics, vol. 61, pp. 1227-1236.
Komjathy Attila
Mannucci Anthony J.
Sparks Lawrence
California Institute of Technology
Gates & Cooper LLP
Issing Gregory C.
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