Radar obstacle detection system with self test

Details Radar obstacle detection system with self test Radar obstacle detection system with self test

1994-01-13

1995-07-11

Eldred, J. Woodrow

Communications: directive radio wave systems and devices (e.g.,

Presence detection only

By motion detection

342 70, 342170, 342171, 340435, 340436, G01S 1300

Patent

active

054325161

ABSTRACT:
A radar system which detects the presence of objects in the proximity of a movable vehicle includes a signal source which generates object detection signals, a first antenna which transmits the object detection signals and receives the object detection signals as reflected signals reflected from an object in the proximity of the movable vehicle. The first antenna is further operable for receiving non-reflected test signals. A second antenna is provided for transmitting test signals which correspond to a delayed portion of the object detection signal generated by the signal source. A control unit is responsive to the reception of the reflected signals for providing an indication of the detection of the object, and is responsive to the reception of the test signals for providing an indication of the operability of the system.

REFERENCES:
patent: 3697876 (1972-10-01), Robbins et al.
patent: 5287111 (1994-02-01), Shpater

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