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1. (WO2014177437) HIGH SENSITIVE APPARATUS FOR CAR PARKING ULTRASONIC SENSORS AND METHOD THEREOF

Pub. No.:    WO/2014/177437    International Application No.:    PCT/EP2014/058222
Publication Date: Nov 6, 2014 International Filing Date: Apr 23, 2014
IPC: G01S 15/93
G01S 15/32
G01S 7/52
Applicants: CEUSONIC GMBH
Inventors: IVCHENKO, Vladimir
NOLLE, Markus
CHALLIS, Richard
TWEEDIE, Richard
Title: HIGH SENSITIVE APPARATUS FOR CAR PARKING ULTRASONIC SENSORS AND METHOD THEREOF
Abstract:
Disclosed is an apparatus (1) for car parking ultrasonic sensors and a corresponding method increasing sensitivity and distance of objects detection in vehicle surrounding by utilising Pseudo Noise encoded excitation sequences of ultrasonic pulses. Duration of said excitation sequences exceeds time of flight of ultrasonic wave from ultrasonic transducer (9) to object (11) and back to transducer (10), thus imposing a simultaneous operation of transmission the sequence and reception of ultrasonic echoes. The inherent effect of parasitic cross-talk from transmitting to receiving chains is eliminated.