25-03-2021 дата публикации
Номер: US20210089386A1
A method for processing a signal on board an aircraft. An electronic control unit receives an input signal including useful data in a first passband, implements a first operation of bandpass filtering the input signal with a first passband to obtain a useful signal containing the useful data, with detection of interference caused by a lightning strike. The electronic control unit implements a second operation of bandpass filtering the input signal to obtain a detection signal, the bandpass filter having a second passband that is distinct from the first passband, comparing a detection value derived from the detection signal with a detection threshold, and correcting the exploitation of the useful data if exceeded. 1. A method for processing a signal of an electronic control unit on board an aircraft , wherein said electronic control unit:receives-an input signal comprising useful data in a useful frequency band,implements a first band-pass filtering of the input signal with a first bandwidth to obtain a useful signal containing the useful data, said first bandwidth comprising the useful band,uses said useful data,wherein the electronic control unit also implements a correction of a use of the useful data by a detection of disturbances caused by a lightning strike comprising the following steps:a second band-pass filtering of the input signal to obtain a detection signal, the second band-pass filtering being with a second bandwidth in which an input signal which has undergone disturbances linked to a lightning strike is likely to present anomalies, the second bandwidth being distinct from the first bandwidth and being comprised in a 1 kHz-15 kHz frequency range, wherein a frequency response of the first band-pass filtering has a main lobe and secondary lobes, a frequency response of the second band-pass filtering has a main lobe and secondary lobes, the main lobe of the first band-pass filtering and the main lobe of the second band-pass filtering not overlapping,a ...
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