Method for detecting and evaluating acoustic detonation signals, and an arrangement for carrying out the method

摘要

In order to detect and evaluate acoustic detonation signals which are subject to interference and occur when a round leaves the barrel mouth or strikes a target, the interference signal which occurs at the same time is subjected to formation of an average value by means of an average-value forming device, especially a median-value forming device. The median of the amplitude values occurring within a time interval DELTA tau corresponds to the interference signal level existing in the received signal and is used for calculating an adaptive threshold. If this threshold is exceeded by the detonation signal which is subject to interference, for a predetermined time interval DELTA tau , then this received signal is interpreted as the real detonation signal. Detection of the length of the detonation signal allows the analysis interval to be shortened without loss of information. Furthermore, received detonation signals which occur shortly after one another in time can still be resolved and evaluated.