In this report, we address practical issues associated with tracking a single non-manoeuvering target using bearings-only data. In particular, we investigate the performance of various tracking algorithms and techniques by processing real trial data obtained from a field of sonobuoys. Difficulties using conventional modelling assumptions are illustrated. The primary aim is to understand the per...

Abstract In the modern war, with improvement of target mobility, increase diversity platform, decrease in radiation noise underwater targets, active sonar technology is becoming increasingly important detection. The data processing has also been continuously improved. Especially development information warfare, tracking highly valued by various countries around world, and it now become a very f...

Chronic neural recordings were taken from the midbrain superior colliculus (SC) of echolocating bats while they were engaged in one of two distinct behavioral tasks: virtual target amplitude discrimination (VTAD) and real oscillating target tracking (ROTT). In the VTAD task, bats used a limited range of sonar call features to discriminate the amplitude category of echoes, whereas in the ROTT ta...

This paper concerns the problem of array shape tracking from clutter for a towed active sonar array. Although heading sensors can provide towed-array shape information, they are sometimes not sufficiently available or accurate to facilitate beamforming with low sidelobe levels necessary for detection of low-Doppler targets, especially in the presence of severe bottom reverberation. We propose a...

An active sonar system consists of a sound source activating a surveillance area and a receiver listening for echoes reflected from targets. In a bistatic setup, the source and the receiver are not collocated. The resulting measurement model is described by a non-linear function of the target state, the given bistatic geometry and environmental parameters. For target tracking it is mandatory to...

Observations suggest that dolphin sonars function well in the very shallow, reverberant, near-shore region of the ocean, and significantly out-perform man-made systems under such conditions. The echolocation characteristics of many small cetaceans have been measured directly and the high performance of biosonar systems is not in question, but explanations for their resolution, target detection,...

Bats are suspected of using predictive tracking in their insect-capture behavior. In Webster and Brazier (1965) they are observed capturing rapidly accelerating moths in the presence of vegetation. This is of interest in the context of sonar-guided behavior in biomimetic robotics. Engineering approaches to that problem often use radar tracking algorithms, particularly various Kalman filters, wh...