Radio tracking system and method of operation thereof

Details Radio tracking system and method of operation thereof Radio tracking system and method of operation thereof

1995-02-24

1997-06-17

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specific condition

34082549, 342147, 371 471, 375346, 455 541, G08B 2300

Patent

active

056401469

ABSTRACT:
A radio tracking and ranging system is disclosed which has at least one mobile radio frequency transmitter and a radio frequency receiver. The radio frequency receiver has a range control which sets a maximum range that each mobile radio frequency transmitter may be moved from the radio frequency receiver without generating an alert to the user of the radio frequency receiver. Each radio frequency transmitter has a "panic" switch which permits a user of the radio frequency transmitter to transmit an alert or alarm to the user of the radio frequency receiver. After receipt of an alert, the user of the radio frequency receiver switches the radio frequency receiver into a tracking mode for locating a direction from which a maximum signal strength is received which is indicative of the relative bearing of the radio frequency transmitter which is being tracked from the radio frequency receiver. Signal processing techniques are used to eliminate the effects of fading and interference in detecting an identification code periodically broadcast by each radio frequency transmitter and further, to eliminate the effects of fading and interference on RSSI signals which are used for determining the range of each radio frequency transmitter relative to the radio frequency receiver and tracking of each radio frequency transmitter.

REFERENCES:
patent: 3761891 (1973-09-01), Markwitz
patent: 3786415 (1974-01-01), Phillips et al.
patent: 3860907 (1975-01-01), Marshall
patent: 3873920 (1975-03-01), Apple, Jr. et al.
patent: 4319230 (1982-03-01), Fowler et al.
patent: 4523178 (1985-06-01), Fulhorst
patent: 4556760 (1985-12-01), Goldman
patent: 4596024 (1986-06-01), Thomson
patent: 4673921 (1987-06-01), Saito et al.
patent: 4675676 (1987-06-01), Narcisse
patent: 4680766 (1987-07-01), Wilkinson
patent: 4686690 (1987-08-01), Sato
patent: 4694473 (1987-09-01), Etoh
patent: 4785291 (1988-11-01), Hawthorne
patent: 4858235 (1989-08-01), Matsuda et al.
patent: 4868885 (1989-09-01), Perry
patent: 4885749 (1989-12-01), Golden
patent: 5004999 (1991-04-01), Hartmann et al.
patent: 5115223 (1992-05-01), Moody
patent: 5115224 (1992-05-01), Kostusiak et al.
patent: 5119072 (1992-06-01), Hemingway
patent: 5153584 (1992-10-01), Engira
patent: 5159331 (1992-10-01), Park et al.
patent: 5193216 (1993-03-01), Davis
patent: 5245314 (1993-09-01), Kah, Jr.
patent: 5289163 (1994-02-01), Perez et al.
patent: 5307053 (1994-04-01), Wills et al.
patent: 5307372 (1994-04-01), Sawyer et al.
patent: 5357254 (1994-10-01), Kah, Jr.
Product Brochure, "Child Locator", Yes! Entertainment Corporation, .COPYRGT.1994.

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