Patent ID: 7358996

Claim:
Device for detection of a photonic flux emitted by a scanning type scene comprising at least one acquisition channel (V) comprising: several useful detectors ( 1 ) aligned parallel to the scanning direction, each associated with a preamplifier ( 2 ), designed such that each receives the same fraction of photonic flux from the scene and to supply information representing the received fraction of photonic flux to the associated preamplifiers ( 2 ), these preamplifiers ( 2 ) outputting an electric signal in response to the information and having a transfer function that can be modified by application of a stimulus (Sétat), a time delay integration device ( 4 ) for adding and delaying the signals emitted by preamplifiers of the channel (V), characterized in that the channel (V) cooperates with at least one calibration device comprising: calibration detector ( 9 ) located on the input side of the useful detectors ( 1 ) along the direction of scanning, designed to receive the fraction of photonic flux before the useful detectors ( 1 ) of the channel (V), and a stimulus generation device ( 11 ) starting from the fraction of flux received by the calibration detector ( 9 ), and with in addition at least one stimulus distribution device ( 13 ) synchronized with scanning, to apply the stimulus to the channel preamplifiers ( 2 ) before they have received information from the associated useful detectors ( 1 ) the stimulus being able to modify the transfer function of the preamplifiers.