A determination process of the number and distance of sea objects using CHIRP signal in a three sensors based underwater network

摘要

An inspection of signal processing approach in order to determine the number and distance of objects in the sea is conducted in this paper. In recent researches, a great emphasize is put on determining the number and distance of objects in the sea. But unfortunately, it's a difficult task due to the badly effect of high absorption, long propagation delay as well as dispersion. However, besides SONAR based techniques, some conventional techniques are also familiar to these aspects. In this research, we have proposed a statistical signal processing approach called Cross-correlation, due to its simplicity and convenience for any environment in the sea. The echo effect of CHIRP signal is used here to determine the number and distance of objects in such underwater networks where three sensors are located due to the task. We have verified this proposed theory by a simulation using MATLAB.