Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Patent
1988-07-21
1990-02-06
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Position indicating
342180, 342456, 364460, 364514, G01S 302, G01S 1300, G01C 1520, G06K 1500
Patent
active
048991619
ABSTRACT:
A computer method is disclosed for accurately transforming multiple radar observations of aircraft into a common coordinate system for air traffic control applications. The method involves a transformation from radar observables of the target slant range, azimuth and altitude to the target position coordinates in a stereographic system plane for display. The method includes a conformal coordinate conversion process from geodetic to conformal spherical coordinates followed by a conformal stereographic projection process onto a system display plane. The resulting display of aircraft position on the system plane is more accurate than has been available in the prior art.
REFERENCES:
patent: 3925750 (1975-12-01), Gilbert et al.
patent: 3971025 (1976-07-01), Levine
patent: 3996590 (1976-12-01), Hammack
patent: 4023158 (1977-05-01), Corcoran
patent: 4196474 (1980-04-01), Buchanan et al.
D. Goldenberg et al., "A Common Coordinate System for the Utilization of Data . . . ", MIT Lincoln Lab. Tech. Report #67, 9/54.
Morin, Jr. Wilfred W.
Wasser Barry
Hoel John E.
International Business Machines - Corporation
Issing Gregory C.
Tarcza Thomas H.
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