Browsing Technical Reports by Author "Nielsen, Peter L."
Now showing items 1-9 of 9
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A study of the uncertainty in estimate seabed properties as a result of goeacoustic inversion algorithms
Fallat, Mark; Dosso, Stan E.; Nielsen, Peter L. (NATO. SACLANTCEN, 2003/10)This paper investigates the inherent uncertainty in estimated seabed properties derived from matched-field geoacoustic inversion algorithms. This algorithm-induced uncertainty must be considered when interpreting inversion ... -
Application of real data to sonar detection by neural networks
Nielsen, Peter L. (NATO. SACLANTCEN, 1992/11)This memorandum describes the results of applying an artificial neural network for the detection of target echoes. The present study is a continuation of work conducted in 1989 in which a three-layer artificial neural ... -
Broadband geo-acoustic inversion from sparse data using genetic algorithms: results from the 1997 Geo-Acoustic Inversion Workshop
Siderius, Martin; Gerstoft, Peter; Nielsen, Peter L. (NATO. SACLANTCEN, 1998/03)Matched field acoustic inversion techniques were investigated -
Broadband signal simulation in shallow water
Jensen, Finn B.; Ferla, Carlo M.; Nielsen, Peter L.; Martinelli, Giovanna (NATO. SACLANTCEN, 2002/12)Today's minimum requirements for ocean acoustic models are to be able to simulate broadband signal transmissions in 2D varying environments with an acceptable computational effort. Standard -
Geo-acoustic inversion of the PROSIM'97 experimental data using simplex simulated annealing
Fallat, Mark; Nielsen, Peter L.; Jensen, Finn B. (NATO. SACLANTCEN, 2000/01)In the spring of 1997 SACLANTCEN performed an experiment near the Elba island in the Mediterranean Sea. The PROSIM'97 experiment was designed for the validation of a broadband acoustic propagation model. During the period ... -
GLider Acoustics Sensing of Sediments (GLASS): experiments and data analysis
Nielsen, Peter L.; Muzi, Lanfranco; Siderius, Martin; Miller, James H. (CMRE, 2013/12)Seabed characteristics (geoacoustic properties and scattering strength) are critical parameters for sonar performance predictions. However, this bottom information is considered very difficult and expensive to achieve in ... -
Mode and PE predictions of propagation in range-dependent environments: SWAM'99 workshop results
Nielsen, Peter L.; Jensen, Finn B. (NATO. SACLANTCEN, 2000/05)Three numerical acoustic models, a coupled normal-mode model (C-SNAP), -
PROSIM broadband normal-mode model: a user's guide
Bini-Verona, Francesco; Nielsen, Peter L.; Jensen, Finn B. (NATO. SACLANTCEN, 2000/02)PROSIM is a layered normal-mode model approach for adiabatic broadband range-dependent sound -
The characterization of a range-dependent environment using towed horizontal array data from the MAPEX 2000 experiment
Fallat, Mark; Nielsen, Peter L.; Siderius, Martin (NATO. SACLANTCEN, 2002/11)The characterization of ocean environments using geoacoustic inversion techniques has received a