Abstract

Direction of Arrival estimation is a topic of paramount significance to both military and commercial applications in locating under water objects. Passive localization system, traditionally using acoustic pressure sensor array, estimates the geometrical coordinates of the acoustic sources by spatially sampling the propagating scalar pressure field radiated from the sources. The performance of spatial filtering algorithms mainly depends on the statistics of the signal of interest, ambient noise and the presence/absence of interfering signals. The signal generated would be a narrowband or wideband signals based on the target type. In this work, a comparative performance analysis of conventional and adaptive spatial filtering algorithms for narrow band and wide band signals is presented.

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