Method and sensor system for measuring the properties of a transmission path of a measuring system between a transmitter and a receiver

摘要

Method and sensor system for measuring the transmission properties of a first transmission path based on feedback compensation between a first transmitter and a receiver, a compensation signal of a compensation transmitter being received in a superimposed manner in the receiver in addition to the emitted transmission signal of the first transmitter. A supply signal for the first transmitter and a receiver output signal each form a vector in a pre-Hilbert space. A Hilbert projection is performed between the receiver output signal and the supply signal so that a projection image signal is generated. An output signal is formed from the projection image signal. A pre-signal is generated by an inverse transformation of the output signal with the supply signal. A compensation signal for supplying the compensation transmitter is generated from the pre-signal formed in order to achieve feedback control of the receiver output signal.

主权项

1. A method for measuring the transmission properties of a first transmission path of a measuring system based on feedback compensation between a first transmitter and a receiver, the method comprising:
transmitting, by the first transmitter, a first signal onto the first transmission path that is detected by the receiver after passing through the first transmission path; transmitting, by a compensation transmitter, a second signal onto a second transmission path that is detected by the receiver after passing through the second transmission path, wherein the first signal and the second signal are superimposed in a linear manner in the receiver and a receiver output signal is formed therefrom; generating, by a generator, a supply signal, wherein the supply signal and the receiver output signal each form a vector in a pre-Hilbert space and the supply signal is a band-limited supply signal different from zero that has an upper cutoff frequency ωmax and a lower cutoff frequency ωmin, the lower cutoff frequency ωmin being different from the upper cutoff frequency ωmax; feeding the supply signal to the first transmitter; executing a forward transformation through a Hilbert projection from the receiver output signal of the receiver to the supply signal to generate a projection image signal; generating an output signal based on the projection image signal, wherein the output signal comprises information about the transmission properties of the first transmission path; executing at least partial inverse transformation of the output signal with the supply signal such that a pre-signal is formed; generating a compensation signal from the pre-signal; and feeding the compensation signal to the compensation transmitter for the feedback control of the receiver output signal.