Detection of Gaussian signals in Poisson-modulated interference.
Passive broadband detection of target signals by an array of hydrophones in the presence of multiple discrete interferers is analyzed under Gaussian statistics and low signal-to-noise ratio conditions. A nonhomogeneous Poisson-modulated interference process is used to model the ensemble of possible arrival directions of the discrete interferers. Closed-form expressions are derived for the recognition differential of the passive-sonar equation in the presence of Poisson-modulated interference. The interference-compensated recognition differential differs from the classical recognition differential by an additive positive term that depend on the interference-to-noise ratio, the directionality of the Poisson-modulated interference, and the array beam pattern.
Streit
R L
RL
Naval Undersea Warfare Center, Newport, Rhode Island 02841, USA. streitrl@npt.nuwc.navy.mil
D000162:Acoustics; D016477:Artifacts; D006801:Humans; D015233:Models, Statistical; D016011:Normal Distribution; D009791:Oceanography; D016012:Poisson Distribution; D012767:Ships