Impact of underwater bandwidth on cross-correlation based node estimation technique

摘要

Bandwidth is the most monumental topic both for the terrestrial and underwater communications. For proper network operation the estimation of number of signal sources (N) is very important. Most of the protocol based techniques are failed to give the desired results of node estimation due to underwater properties (long propagation delay, high absorptions and dispersion). Node estimation technique using cross-correlation is not based on protocol, where infinite band Gaussian signals are used. But the underwater bandwidth is finite (1-15 kHz). This limited bandwidth can encumber the signal bandwidth which might invade the estimation process. In this paper, the number of estimated nodes is being obtained considering the effect of underwater bandwidth using three sensors.