Advances in Sonar Technology 2012 Part 13 ppt
Advances in Sonar Technology 2012 Part 13 ppt
... i-th sonar sensor. Let be defined as the set of readings in represented with respect to the coordinate frame of using the relative motion proposed by the particle: (6) Advances in Sonar ... approach to linear filtering and prediction problems. Transactions of the ASME. Journal of Basic Engineering, Vol. 82, March 1960, pp. 35- 45. Advances in Sonar Technology...
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Advances in Sonar Technology 2012 Part 1 pptx
... replaced by a final image level scaling. Computations can be performed directly in image space, removing also the need for the FFT when working in frequency domain, resulting in the following expression ... p. cm. ISBN 978-3-902 613- 48-6 1. Advances in Sonar Technology, Sergio Rui Silva Advances in Sonar Technology 4 Ray tracing Ray tracing (Bell 1997)...
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Advances in Sonar Technology 2012 Part 4 pptx
... mapping operation is carried out using an interpolation process. The final step is to invert the Fourier domain with a windowing function WW(k x ,k y ) to reduce the side lobes in the final ... 2-D weighting function to be applied to the Advances in Sonar Technology 52 3.1.4 Radiation pattern The radiation pattern or sonar footprint of a stripmap SAS system maintains th...
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Advances in Sonar Technology 2012 Part 5 pptx
... Advances in Sonar Technology 76 the scanning motion of the emitter antenna (and possibly the sensor antenna) may in this case influence the scaling. In general, we assume that the scaling ... Life Sciences, 2 Institute of Energy Technology, Department of Process and Fluid Flow Technology, Norway 1. Introduction In radar and sonar signal processing it is of interes...
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Advances in Sonar Technology 2012 Part 6 pptx
... of σ and Δ obtained by performing the computations described in the main text (solid lines) and corresponding asymptotical estimates (eqs. 26, dashed). Advances in Sonar Technology 94 ... sequence in a k is sorted according to increasing scaling to easily handle the thresholding. Each k then corresponds to a scaling threshold a k . Only data with scaling k aa≥ were retai...
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Advances in Sonar Technology 2012 Part 3 potx
... is obtained by sensing, recording, and processing the ping-to-ping phase history resulting from the variation in slant range caused by the projector’s main lobe illumination pattern moving past ... continuous 2D distribution of omni- directional (aspect independent) and frequency independent reflecting targets. This target area is illuminated by a side-looking sonar system travelling a...
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Advances in Sonar Technology 2012 Part 7 doc
... models remain valid. Advances in Sonar Technology 120 since the reader dealing with low-resolution sonar images may use the very same detection method proposed in this paper using the Rayleigh ... the Independent Component Analysis for Passive Sonar Signal Processing 109 Jutten, C. and Karhunen, J. (2003) Advances in nonlinear blind source separation, Proceedi...
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Advances in Sonar Technology 2012 Part 8 docx
... (segmentation) and kurtosis parameters in Fig. 3 Advances in Sonar Technology 140 In a similar way, we define a rate of error knowing the environment truth by the following expression: ( ) ( ) ( ) ∑ =∩ += ø 2 1log/ BA AAmBmEr ... obtained for each proposition with the kurtosis parameter in Fig. 3 Fig. 28. Mass images obtained after fusion of the three parameters...
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Advances in Sonar Technology 2012 Part 9 potx
... Advances in Sonar Technology 152 Fig. 1. Comparison of sonar systems operating at different depths. Notice the increasing footprint as the distance increases. However, ... Sonar Sensor Integration Advances in Sonar Technology 154 accurate assessment of the angular direction. Interferometric technology could prove highly beneficial to seabed mapping prog...
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Advances in Sonar Technology 2012 Part 11 doc
... Schalles, J.; Hutchins, K. & Keck, J. (2002). Classifying and mapping general coral-reef structure using Ikonos data. Photogrammetric Engineering and Remote Sensing, 68, 1297 -130 5. Malthus, ... are pointed out in this new, fascinating, and open field of research. 2. Propagation of ultrasonic waves in the atmosphere Sound propagation in the atmosphere has been the subject of...
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