New PDF release: Localization and Orientation in Biology and Engineering

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By F. Ackermann (auth.), Prof. D. Varjú, Prof. H.-U. Schnitzler (eds.)

ISBN-10: 3642693083

ISBN-13: 9783642693083

ISBN-10: 3642693105

ISBN-13: 9783642693106

The German Society of Cybernetics organizes foreign meetings on chosen interdisciplinary themes in commonplace 3-year durations. the purpose of those conferences is to assemble scientists who paintings in really diverse disciplines, yet are faced with similar difficulties and use a similar or comparable methods. the subject of the 1983 convention which was once hung on March 23-25 on the collage of Tiibingen got here from a customary box of analysis during which engineers, biologists, and phYSicists proportion a typical curiosity. we don't are looking to talk about the following intimately the typical ideas that are utilized by nature and through engineers to resolve the issues linked to localization and orientation, because the reader will locate adequate examples during this quantity. The query, in spite of the fact that, no matter if the members of such conferences can quite cash in on one another, merits a few extra consid­ eration. First, there's the trouble of discovering a standard language. This nonetheless looks an issue, even supposing in a few fields the language of engineers and biologists has turn into very comparable through the years, an impact we additionally won through the convention. lots of the authors made a very good ef­ fortress to exploit a vocabulary that is comprehensible to humans outdoor their very own box of analysis, yet, admittedly, no longer all succeeded.

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Vogel aspect the fluctuation contains information about the scattering center locations in range or azimuth. A single radar measurement of a resolution cell containing more than one scattering center is not meaningful under constant conditions. An image will be speckled. Averaging over many decorrelated measurements is essential for a quantitative evaluation. For more than three scattering centers of equal magnitude, the rms power uncertainty for a single measurement is approximately

For active localization and identification an analogous way of reasoning may be applied. However now XI is the emitted signal and X2 is the reflected signal. Comparison of Z22 with ZII may lead to identification while evaluation of EI2 and Z21 may supply the clues for localization. In this context the function of EE- and EI-neurons in the central auditory nervous system should be considered. Acknowledgements. This investigation forms a part of the research program "Brain and Behaviour: Neural base of Localization and Orientation".

In: Busnel RG, Fish JF (eds) Animal sonar systems. Plenum Publ Corp, New York, pp 625-671 Bastiaans MJ (1979) Wigner distribution and its application to first order optics. J Opt Soc 69: 1710-1716 The Phonochrome - A Coherent Spectro-Temporal Representation of Sound 45 Claasen TACM, Mecklenbrauker WFG (1980) The Wigner distribution - A tool for time frequency signal analysis. I. Continuous time signals. II. Discrete time signals. III. Relations with other time-frequency signal transformations. Philips J Res 35:217-250; 276-300; 372-389 Flandrin P, Escudie B (1980) Time and frequency representation of finite energy signals: a physical property as a result of an Hilbertian condition.

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Localization and Orientation in Biology and Engineering by F. Ackermann (auth.), Prof. D. Varjú, Prof. H.-U. Schnitzler (eds.)


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