| 摘要 |
The present invention relates to a method for amplifying an echo signal, wherein an analogue echo signal suitable for vehicle environment detection is amplified by means of an amplification based on the runtime of the echo signal, wherein the analogue echo signal is amplified by means of an amplifier having a plurality of outputs, each with different amplification and a downstream A/D converter with a time-variable reference voltage. At the same time, switching occurs between the different outputs of the amplifier at predefined switchover times and the reference voltage of the A/D converter varies time-wise between the switching times in such a manner that at the output of the A/D converter the echo signal is present with a runtime-dependent overall amplification, which has a predefined profile. |
