Link budget analysis for undewater acoustic signaling

Abstract

Link-budget analysis is the method to get the link margin of the underwater acoustic communication considering the transmitter signal power, transmitter antenna characteristics, propagation losses, channel ambient noise, and receiver antenna characteristics. Link-budget analysis is commonly applied to satellite and wireless communications for estimating signal-to-noise ratio (SNR) at the receiver. Underwater signal and the terms for the sonar equation translate easily to the formulation of the link budget. However, the high frequency dependence of the diffusion of underwater acoustics requires special attention, and is the result of an argument called signal to noise ratio channel. And compared to many of the problems of communication and voice navigation through link analysis of the large-scale budget. Link budget is applied to voice communications system using the same principles to sea radio link budget. The active sonar equation is utilized to provide an estimate of the first class of signals available at the receiver. Three case studies have shown wireless link budget of the utility systems in the design of broadband communications. Link budget is a useful tool in the perceived impact of the channel on the transmitted signal and evaluate the consequences of the strategic wireless transmission. Aim of this case of the research is design wideband frequency underwater acoustic communication system and comparative study of link budget analysis for underwater communication with the attenuation of the underwater channel by means of the modeling in the MATLAB software. Find out the channel conditions of the underwater acoustic communication in the wideband frequency are strongly range dependent due to underwater attenuation and interference noise. This study found at that link budgeting considers the range and frequency dependence of wideband signals in the acoustic medium. In particular, the channel SNR is strongly frequency dependent in the bands of interest.