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1. (WO2013156557) SENSOR SYSTEM AND METHOD FOR MEASURING THE TRANSMISSION PROPERTIES OF A TRANSMISSION PATH OF A MEASURING SYSTEM BETWEEN A TRANSMITTER AND A RECEIVER

Pub. No.:    WO/2013/156557    International Application No.:    PCT/EP2013/058064
Publication Date: Fri Oct 25 01:59:59 CEST 2013 International Filing Date: Fri Apr 19 01:59:59 CEST 2013
IPC: G01S 7/497
G01S 7/486
Applicants: ELMOS SEMICONDUCTOR AG
Inventors: KRÜCKE, Ludger
MELCHER, Rolf
Title: SENSOR SYSTEM AND METHOD FOR MEASURING THE TRANSMISSION PROPERTIES OF A TRANSMISSION PATH OF A MEASURING SYSTEM BETWEEN A TRANSMITTER AND A RECEIVER
Abstract:
The invention relates to a sensor system and a method for measuring the transmission properties of a first transmission path of a feedback compensation-based measuring system (1) between at least one transmitter (102) and at least one receiver (104). The transmitter (102) transmits a transmission signal (S25) into the transmission path, said transmission signal being detected by the receiver (102) after passing through at least one part of the first transmission path, and a compensation transmitter (106) transmits a compensation signal (S23) into a second transmission path, said compensation signal being detected by the receiver (102) after passing through the second transmission path. The transmission signal (S25) and the compensation signal (S23) overlap each other linearly in the receiver (102) so that a receiver output signal (S1) is formed from the transmission signal and the compensation signal in the receiver, said receiver output signal subsequently being further processed into a compensator feed signal (S3). The compensator feed signal (S3) is fed to the compensation transmitter (106) for the feedback regulation of the receiver output signal (S1). A control signal (S20) is generated by means of a control generator (4), and a signal generator unit (2) is controlled by means of said control signal. The signal generator unit (2) comprises at least one signal generator (3) which generates a feed signal that is fed to the transmitter, wherein the feed signal (S5) is dependent on the control signal (S20) generated by the control generator (4). The receiver output signal (S1) is filtered by means of a controllable filter unit (5), which comprises at least one filter (6), before the receiver output signal is further processed into the compensator feed signal (S3). Said processing is preferably carried out by means of a processing unit (10).