Communications: directive radio wave systems and devices (e.g. – Radar ew
Patent
1990-06-18
1992-06-16
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
Radar ew
342 20, G01S 738
Patent
active
051228025
ABSTRACT:
An autonomous radar transmitting system transmits radar signals which simulate the presence of a police- manned radar station. A system controller runs pseudo- randomizing programs to select signal parameters such as the pulse width and pulse separation as well as the signal power of generated radar signals. The radar output of the system is therefore sufficiently random to prevent a detecting circuit from identifying it in the time it takes for a motorist with a radar detector to reach the radar source. This system is battery powered and a photovoltaic panel is provided to recharge the battery, thus giving the system a long lifespan. The controller detects the battery power level and modifies the parameters of the generated signals in response to low battery levels. A radiation detector is also provided through which radiation signals may be input from a remote control. The input radiation signals may be used to suspend system operation or modify the signal parameters. Thus, external control is provided without making the system susceptible to tampering or vandelism. Most of the electrical components are enclosed in a weatherproof casing capable of being mounted in a number of discrete, convenient locations.
REFERENCES:
patent: 2521683 (1950-09-01), Barker
patent: 3891989 (1975-06-01), Barney et al.
patent: 3895227 (1975-07-01), Murray et al.
patent: 4295131 (1981-10-01), Bonori et al.
patent: 4435699 (1984-03-01), Tacussel
patent: 4757304 (1988-07-01), Rho
patent: 4857917 (1989-08-01), Sato
"Barriers Remain to Safe Work Zones" by ENR (Apr. 7, 1988).
Federal Communication Newsletter, Report No. 4872, May 19, 1973.
"Antennas at X or K Band Frequencies" by M/A-Com Ga/As Products Inc. MA 86550.
"Radar", News Scope, Dec. 20, 1977.
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