Advances in Sonar Technology 2012 Part 7 doc
Advances in Sonar Technology 2012 Part 7 doc
... pursuit, Advances in Neural Information Signal Processing, no. 10, pp. 273 - 279 . Hyvärinen, A. (1998b) Independent component analysis in the presence of Gaussian noise by maximizing joint likelihood. ... 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...
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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 ... Fig. 27. Mass images obtained for each proposition with the kurtosis parameter in Fig. 3 Fig. 28. Mass images obtained after fusion of...
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Advances in Sonar Technology 2012 Part 11 doc
... detection in coral reef communities using Ikonos satellite sensor imagery and historic aerial photographs. International Journal of Remote Sensing, 24, 873 - 878 . Pasqualini, V.; Pergent-Martini, ... Schalles, J.; Hutchins, K. & Keck, J. (2002). Classifying and mapping general coral-reef structure using Ikonos data. Photogrammetric Engineering and Remote Sensing, 68, 12 97- 1305....
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Advances in Sonar Technology 2012 Part 1 pptx
... p. cm. ISBN 978 -3-902613-48-6 1. Advances in Sonar Technology, Sergio Rui Silva Advances in Sonar Technology 4 Ray tracing Ray tracing (Bell 19 97) is a method to calculate the path ... 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 i...
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Advances in Sonar Technology 2012 Part 3 potx
... target placed in the river bottom. Along/cross track compressed image (ART - AF) Along-Track (m) Cross-Track (m) 17. 66 17. 68 17. 7 17. 72 17. 74 17. 76 17. 78 17. 8 17. 82 17. 84 17. 86 8.38 8.4 8.42 8.44 8.46 8.48 0.1 0.2 0.3 0.4 0.5 0.6 0 .7 0.8 0.9 1 ... is obtained by sensing, recording, and processing the ping-to-ping phase history resulting from the variation in slant ran...
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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 ... Warman, K. (2000). An introduction to synthetic aperture sonar, Proceedings of the Tenth IEEE Workshop on Statistical Signal and Array Processing, pp. 71 7 -72 1, ISBN: 0 -78 03-5...
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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 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, ... Acoustic Mapping Apparatus. US patent n° 348 473 7, 1969. Advances in Sonar Technology 156 uneconomical and inefficient. Evans et al. (Evans et al., 1999) investigated the advantages of singl...
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Advances in Sonar Technology 2012 Part 12 pdf
... illustrated in Figure 2. Line 7 is in charge of building the new local map of each particle, by adding the current set of sonar readings and discarding to oldest readings so that the map size remains ... Ltd, Jerusalem, 1 971 . Yura, H. T. (1 971 ). Atmospheric turbulence induced laser beam spread. Applied Optics, Vol. 10, No. 12 (December 1 971 ), pp. 277 1– 277 3. Outdoor Sona...
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