ADS (Acoustic digital spread spectrum ) technology has been used by Nautronix to design a new underwater acoustic positioning and navigation system NAS (Nautronix Acoustic Subsea) Network , so as to enhance the current subsea positioning and communication capabilities. The designers have to either increase the SNR (signal-to-noise ratio) or the bandwidth of the signal to improve the performance of an acoustic positioning system. Acoustic detectors employ the use of a match filter, which best responds to the acoustic pulse to be detected and tends to attenuate other signals. NASNet utilizes the ADS signaling, enabling accurate acoustic positioning and communication over long ranges. The system includes a data telemetry capability for the operational management of stations, performing tasks such as clock synchronization and transmitting power level adjustments. The system provides a stable long-term common reference to multiple users simultaneously and is the dominant technology for positioning, communication, and sensing underwater assets.
Acoustic digital spread spectrum: An enabling technology
Akustisches digitales Streuspektrum: Eine Technik, die neue Möglichkeiten erschließt
Sea Technology ; 46 , 10 ; 15-20
2005
6 Seiten
Article (Journal)
English
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