Abstract: A multi-sensor device for detecting events, comprises first acquisition means comprising at least a first sensor, operating in a first frequency band and second acquisition means comprising at least a second sensor, operating in a second frequency band different from the first frequency band, means for processing raw data originating from the acquisition means and comprising means for the detection of events in the raw data and for determining the geographic location of said events, means for transmitting an alert if an event is detected by the processing means, means for storing the raw data, said storage means being suitable for restoring the stored raw data in a synchronized manner, and monitoring means which, following detection of an event in the raw data of one of said acquisition means, enables said processing means to be adapted to detect events in said stored raw data originating from said other acquisition means.

Abstract: A multi-sensor device for detecting events, comprises first acquisition means comprising at least a first sensor, operating in a first frequency band and second acquisition means comprising at least a second sensor, operating in a second frequency band different from the first frequency band, means for processing raw data originating from the acquisition means and comprising means for the detection of events in the raw data and for determining the geographic location of said events, means for transmitting an alert if an event is detected by the processing means, means for storing the raw data, said storage means being suitable for restoring the stored raw data in a synchronized manner, and monitoring means which, following detection of an event in the raw data of one of said acquisition means, enables said processing means to be adapted to detect events in said stored raw data originating from said other acquisition means.

Abstract: A method and device are disclosed for real-time characterization of frequency-hopping networks, in which the signal to be characterized is converted into a digital signal and the frequency characteristics of the signal are determined. A frequency hop is sought for synchronization with the start of the transmission. The frequency is tracked and the central frequency Fc of the required transmission channel is sought. A delay is applied to the digitized samples during the tracking phase. The samples corresponding to the signal step are determined on the basis of the delayed samples and the identified central frequency.

Abstract: A method and device are disclosed for real-time characterization of frequency-hopping networks, in which the signal to be characterized is converted into a digital signal and the frequency characteristics of the signal are determined. A frequency hop is sought for synchronization with the start of the transmission. The frequency is tracked and the central frequency Fc of the required transmission channel is sought. A delay is applied to the digitized samples during the tracking phase. The samples corresponding to the signal step are determined on the basis of the delayed samples and the identified central frequency.