Andre Boen

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Array beamforming techniques allow for the generation of 3-D spatial filters which can be used to localize objects in a large field of view (FOV) without the need for mechanical scanning. By combining broadband beamforming with a sparse, random array of receivers, we have constructed a low-cost, yet powerful, in-air sonar system, which is suited for a wide(More)
Bats are known to use spectral cues to localise targets. We propose a similar localisation scheme making use of a sensor array built using EMFi material and a structured backplate. We present an adaptation of `delay and sum¿ beamforming that when combined with a broadband chirp results in accurate localisation (±2°) in a broad field of view [¿70°,70°].
Echolocating bats have excellent spatial memory and are able to navigate to salient locations using bio-sonar. Navigating and route-following require animals to recognize places. Currently, it is mostly unknown how bats recognize places using echolocation. In this paper, we propose template based place recognition might underlie sonar-based navigation in(More)
We describe how, by combining broadband beamforming with a sparse, random array of receivers, we have constructed a low-cost, yet powerful, in-air sonar system which is suited for a wide range of robotic applications. In particular, we show how simple array beamforming techniques allow for the generation of 3D spatial filters that can be used to accurately(More)
Echolocating bats perceive the world through sound signals reflecting from the objects around them. In these signals, information is contained about reflector location and reflector identity. Bats are able to extract and separate the cues for location from those that carry identification information. We propose a model based on Wiener deconvolution that(More)
Bats use the spatial filtering performed by their pinnae in localization tasks. We propose a similar localization scheme based on the spatial filtering of the received echoes by using a phased array. By evolving the weights of a linear phased array using a genetic algorithm, a very efficient spatial filter can be implemented. The localization performance of(More)
REGULAR PAPERS Algorithms, Artificial Intelligence, SOFT Computing and Informatics Fuel-Type Identification Using Joint Probability Density Arbiter and Soft-Computing Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L. Xu, C. Tan, X. Li, Y. Cheng, and X. Li xxx(More)
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