A watermarking scheme is proposed based on optical asymmetric cryptography using double random phase encoding in
the gyrator transform domain. It is based on the phase and amplitude truncation during the encryption process. The
scheme is validated through computer simulations showing the scheme's sensitivity to decryption keys and orders of the
gyrator transform. The occlusion and noise attacks have also been analysed. The proposed scheme is significantly
resistant to both these attacks.
An airborne, high resolution, load tracking and structural health monitoring system for unmanned aerial vehicles is
presented. The system is based on embedded optical fiber Bragg sensors interrogated in real time during flight at 2.5
kHz. By analyzing the recorded vibration signature it is now possible to identify and trace the dynamic response of an
airborne structure and track its loads.
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