Boots – shoes – and leggings
Patent
1995-11-14
1997-11-25
Voeltz, Emanuel T.
Boots, shoes, and leggings
364410, G01S 1374
Patent
active
056919220
ABSTRACT:
A golf ranging system is provided where a golfer positions a ranging unit at a ball position, indicates which hole is being played and the ranging unit reports the distance to the pin for that hole and/or the distance from the tee for that hole. The ranging signal is a direct sequence spread-spectrum signal and the ranging is repeated many times and an average taken, to improve the accuracy of the distance measurement. Optionally, the ranging system could operate over multiple frequencies to avoid interference. The multiple frequencies are scanned until an interference-free channel is found, or measurements are made at several frequencies and averaged. The pin unit might be housed just beyond the pin and include an offset to the pin. The offset can be set by simply sending an offset signal from a standard ranging unit, or a specially configured course management unit, held at the pin or manually entered via a serial port.
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Breed, Gary A., "A First Introduction to Direct Sequence Spread-Spectrum," RF Design (Apr., 1994) 3 pp.
Dixon, Robert C., "Spread Spectrum Systems With Commercial Applications," (Third Edition), Chapter 8, Section 8.1, (John Wiley & Sons, Inc.) pp. 297-301.
Fakatselis, John; Petrick, Al, "System Considerations in Spread-Spectrum Designs," Wireless Design & Development, Apr. 1995, vol. 3, No. 4, 4 pp.
Maietta Michael
Marcoccia Roberto
McEwan Charles
Pompeani Robert
Airwave Technology, Inc.
Kemper M.
Voeltz Emanuel T.
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