Advanced Speech Watermarking for Secure Aircraft Identification
Konrad Hofbauer · 2008
AIT, a system for putting a small “Aircraft Identification Tag ” onto the voice communication between pilots and controller was presented in [4]. The system is based on spread-spectrum watermarking techniques and consists of an encoder, an autonomous data acquisition module and a decoder. In this PhD study the future research aims for major improvements in data capacity, inaudibility, reliability, security and speech quality of the system. This involves multidisciplinary research in communication engineering, audio signal processing, psychoacoustics and adjacent fields.