Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1995-06-07
1996-11-05
Issing, Gregory C.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
342386, G01S 502, G01S 108, H04B 7185
Patent
active
055722180
ABSTRACT:
A GPS system and method for generating precise position determinations. The GPS system includes a ground based GPS reference system which receives with a reference receiver GPS signals and makes phase measurements for the carrier components of the GPS signals. The GPS reference system then generates and broadcasts an initialization signal having a carrier component and a data link signal having a data component. The data component of the data link signal contains data representing the phase measurements made by the reference receiver. The GPS system also includes a GPS mobile system which receives with a mobile position receiver the same GPS signals as were received by the reference system. In addition, the GPS position receiver receives the data link and initialization signals broadcast by the reference system. The GPS position receiver then makes phase measurements for the carrier components of the GPS signals during and after an initialization period and makes phase measurements for the initialization signal during the initialization period. In response to the phase measurements made by both the reference receiver and the position receiver during the initialization period, the position receiver generates initialization values representing resolution of the integer ambiguities of the received signals. In response to the initialization values and the phase measurements made by both the receivers after the initialization period, the position receiver generates precise position determinations to within centimeters of the exact location.
REFERENCES:
patent: 4667203 (1987-05-01), Counselman, III
patent: 4672382 (1987-06-01), Fukuhara et al.
patent: 4754465 (1988-06-01), Trimble
patent: 4894655 (1990-01-01), Joguet et al.
patent: 4928106 (1990-05-01), Ashjaee et al.
patent: 4972431 (1990-11-01), Keegan
patent: 5134407 (1992-07-01), Lorenz et al.
patent: 5177489 (1993-01-01), Hatch
patent: 5252982 (1993-10-01), Frei
patent: 5311194 (1994-05-01), Brown
Expanding The Performance Envelope of GPS-Based Attitude Determination, by Clark E. Cohen, et al., Institute of Washington, Albuquerque, NM, Sep. 9-13, 1991.
Flight Tests of Attitude Determination Using GPS Compared Against An Inertial Navigation Unit, by Clark E. Cohen, et al., Institute of Navigation, San Francisco, CA, Jan. 20-22, 1993.
Integer Ambiguity Resolution Of The GPS Carrier For Spacecraft Attitude Determination, by Clark E. Cohen, et al., 15th Annual AAS Guidance & Control Conference, Keystone, CO, Feb. 8-12, 1992.
Attitude Determination Using GPS, by Clark E. Cohen, Dissertation for Ph.A. from Stanford University, Dec. 1992.
Ambiguity Resolution On-The-Fly--A Comparison of P Code And High Performance C/A Code, by Dr. Gerard Lachapelle, et al., Institute of Navigation, GPS-92, Albuquerque, NM, Sep. 1992.
Aircraft Applications of GPS-Based Attitude Determination, by Clark E. Cohen, et al., Institute of Navigation, GPS-92, Albuquerque, NM, Sep. 1992.
Kinematic GPS For Differential Positioning: Resolving Integer Ambiguities On The Fly, by Patrick Y. C. Hwang, GPS Papers published in Navigation, vol. 38, No. 1, Jan. 1991.
Application & Technical Notes, Real-Time Kinematic GPS Surveying Technical Overview, published by Trimble Navigation, Jan. 1992.
Landau, H., et al., "Precise Real-Time Differential GPS Positioning Using On-The-Fly Ambiguity Resolution", Institute of Astonomical and Physical Geodesy, University FAF Munich.
"Site Surveyor, -Real-Time GPS Survey System," by Trimble Navigation, Oct. 1992.
"Application & Technical Notes, --Real-Time Kinematic GPS Surveying Technical Overview," by Trimble Navigation.
"Surveying and Mapping Products --System Surveyor, Series 4000, GPS Survey System," by Trimble Navigation, 1992.
Ambiguity Resolution On-The-Fly--Comparison Of P Code And High Performance C/A Code Receiver Technologies, by Dr. Gerard Lachapelle, et al., pp. 1025-1032.
Aircraft Applications Of GPS-Based Attitude Determination, by Clark E. Cohen, et al., Stanford University, Dept. of Aeronautics and Astronautics.
Instantaneous Ambiguity Resolution, by Ron Hatch, Paper Presented Sep. 11, 1990 at Banff, Canada at KIS Symposium 1990.
A GPS Precision Approach And Landing System, by Dr. Alison K. Brown, Inst. of Navigation, GPS-92, Albuquerque, NM, Sep. 1992, pp. 373-381.
Kinematic GPS For Differential Positioning: Resolving Integer Ambiguities On The Fly, by Patrick Y. C. Hwang, Rockwell Intl. Corp., Cedar Rapids, Iowa, Jan. 1991.
The Application Of Navstar Differential GPS In The Civilian Community, by Jacques Beser, et al., GPS Papers Published in Navigation, vol. II, 1984, pp. 167-196.
The Use Of Pseudo Satellites For Improving GPS Performance, by Dale Klein, et al., GPS Papers Published in Navigation, vol. III, 1986, pp. 135-146.
RTCM SC-104 Recommended Pseudolite Signal Specification, by Thomas A. Stansell, Jr., GPS Papers Published in Navigation, vol. III, 1986, pp. 117-134.
Cobb Henry S.
Cohen Clark E.
Lawrence David G.
Parkinson Bradford W.
Pervan Boris S.
IntegriNautics
Issing Gregory C.
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