Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1996-12-23
1998-08-18
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
342363, 343712, H04B 7185, G01S 502
Patent
active
057963657
ABSTRACT:
An apparatus and a method are described for determining with a high degree of accuracy the location of an object, based upon signals transmitted from a plurality of satellites rotating about the earth in known orbits. First, the latitude and longitude of a fixed point is determined with accuracy. The object is capable of moving with respect to the fixed point. Second, the satellite signals are received at the fixed point and processed to determine the approximate latitude and longitude of the fixed point. A first difference between the accurate and approximate latitudes is taken to provide a differential latitude correction of a magnitude corresponding to the first difference and of a direction to the north or south. A second difference between the accurate and approximate longitudes is also taken to provide a differential longitude correction of a magnitude corresponding to the second difference and of a direction to the west or east. The satellite signals are received at the object and processed to determine the approximate latitude and longitude of the object. The approximate object latitude and differential latitude correction are then combined to provide a corrected object latitude of improved accuracy, and the approximate object longitude and differential longitude correction are combined to provide a corrected object longitude of improved accuracy.
REFERENCES:
patent: 3568161 (1971-03-01), Knickel
patent: 4086595 (1978-04-01), Cherenko et al.
patent: 4141001 (1979-02-01), Boaz
patent: 4300140 (1981-11-01), Brandigampola
patent: 4445118 (1984-04-01), Taylor et al.
patent: 4596988 (1986-06-01), Wanka
patent: 4651157 (1987-03-01), Gray et al.
patent: 4667203 (1987-05-01), Counselman, III
patent: 4701760 (1987-10-01), Raoux
patent: 4721963 (1988-01-01), Nagy et al.
patent: 4728959 (1988-03-01), Maloney et al.
patent: 4731613 (1988-03-01), Endo et al.
patent: 4740792 (1988-04-01), Sagey et al.
patent: 4751512 (1988-06-01), Longaker
patent: 4754283 (1988-06-01), Fowler
patent: 4791572 (1988-12-01), Green, III et al.
patent: 4804967 (1989-02-01), Ohe et al.
patent: 4809005 (1989-02-01), Counselman, III
patent: 4812991 (1989-03-01), Hatch
patent: 4891650 (1990-01-01), Sheffer
patent: 4891761 (1990-01-01), Gray et al.
patent: 4894662 (1990-01-01), Counselman, III
patent: 4897642 (1990-01-01), DiLullo et al.
patent: 4907290 (1990-03-01), Crompton
patent: 4912756 (1990-03-01), Hop
patent: 4924699 (1990-05-01), Kuroda et al.
patent: 4928107 (1990-05-01), Kuroda et al.
patent: 4931808 (1990-06-01), Lalezari et al.
patent: 4953198 (1990-08-01), Daly et al.
patent: 4983980 (1991-01-01), Ando
patent: 5003317 (1991-03-01), Gray et al.
patent: 5014066 (1991-05-01), Counselman, III
patent: 5021794 (1991-06-01), Lawrence
patent: 5043736 (1991-08-01), Darnell et al.
patent: 5055851 (1991-10-01), Sheffer
patent: 5081462 (1992-01-01), Tachita et al.
patent: 5093669 (1992-03-01), Kasiyama
patent: 5119101 (1992-06-01), Barnard
patent: 5119102 (1992-06-01), Barnard
patent: 5119504 (1992-06-01), Duboraw, III
patent: 5132695 (1992-07-01), Dumas et al.
patent: 5142281 (1992-08-01), Park
patent: 5144318 (1992-09-01), Kishi
patent: 5148179 (1992-09-01), Allison
patent: 5155490 (1992-10-01), Spradley, Jr. et al.
patent: 5155491 (1992-10-01), Ando
patent: 5155689 (1992-10-01), Wortham
patent: 5223844 (1993-06-01), Mansell et al.
patent: 5225842 (1993-07-01), Brown et al.
patent: 5248981 (1993-09-01), Yoshihara et al.
patent: 5323164 (1994-06-01), Endo
patent: 5323322 (1994-06-01), Mueller et al.
patent: 5355144 (1994-10-01), Walton et al.
patent: 5365447 (1994-11-01), Dennis
patent: 5390124 (1995-02-01), Kyrtsos
patent: 5402134 (1995-03-01), Miller et al.
patent: 5426006 (1995-06-01), Delnick et al.
patent: 5438517 (1995-08-01), Sennott et al.
Communication Daily; vol. 9, No. 61, p. 3; "Mobile Communications; Joint Venture Plans to Compete With Geostar and Qualcomm Satellite Systems".
Communicatoins of the ACM; vol. 31, No. 6, p. 638; "Personal computer in the year; Winning entry in 1987 sponsored by Apple Computer Inc.", By Mel; Bartlett W.; Gmohundro, Stephen M, Robinson, Arch D.; Skiena, Steven S.; Thearling, Kurt H.; Young, Luke T.; and Wolfram, Stephen.
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