Radar velocity sensor

Details Radar velocity sensor Radar velocity sensor

G - Physics

01

S

343/12, 343/28

G01S 7/02 (2006.01) G01S 13/60 (2006.01)

Patent

CA 1228144

ABSTRACT OF THE DISCLOSURE A tracking, variable Q band pass filtering method and apparatus are provided for processing an IF signal from a radar transceiver or the like. The method comprises developing a digital period signal corresponding to the period of each of selected cycles of the IF signal; subjecting the digital period signal to low pass filtering; and controlling the effective corner frequency of the low pass filtering in accordance with the amount of variation in the digital period signal from one selected cycle to a successive selected cycle for producing a filtered signal which substantially follows the digital period signal, thereby substantially simultaneously tracking and filtering the IF signal. The apparatus comprises apparatus for carrying out the foregoing method. Preferably, the apparatus also includes an output switching control for selectively delivering or withholding the filtered signal from an output utilization device. This control is responsive to a predetermined control signal for withholding the filtered signal from the output utilization device. Preferably, the apparatus also includes a switchable power supply for the radar transceiver and a control circuit responsive to a predetermined control signal for switching the switchable power supply means to an inactive condition, thereby removing power from the radar transceiver.

460435

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