System for the calculation of at least one vehicular traffic che

Details System for the calculation of at least one vehicular traffic che System for the calculation of at least one vehicular traffic che

1993-08-25

1995-03-28

Teska, Kevin J.

Boots, shoes, and leggings

364437, 364438, 340933, 340934, 342454, G06F 1570

Patent

active

054023467

ABSTRACT:
This invention comprises a system for calculating at least one vehicular traffic check parameter. The system according to the invention includes a pulse modulated radar placed at a high point at the side of the lanes to be monitored. The radar emits pulses having a frequency f.sub.o and width .tau. according to a radiation diagram. The radiation diagram is narrow in plan and sufficiently wide in elevation to cover all lanes to be monitored, and inclined in elevation and plan such that at least one range bin of the radar is included in a lane. Echo signals received by the radar are then processed by a signal processing module and a parameter extraction module. The invention is particularly useful in automobile traffic, for calculation of the number of vehicles travelling in lanes, the vehicles speed and length, etc. The advantage of the this inventive system compared with previous systems is that it enables simultaneous checking of several traffic lanes.

REFERENCES:
patent: 3876946 (1975-04-01), La Clair et al.
patent: 4317117 (1982-02-01), Chasek
patent: 4947354 (1990-08-01), Hethuin
patent: 5161107 (1992-11-01), Mayeaux et al.
patent: 5283573 (1994-02-01), Takatou et al.
Smit et al., `Static Radar Sensors for Observation and Control of Inland Vessel Traffic`, Int'l Conf:Radar 87 Oct. 1987, N.Y., US pp. 292-296.

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