Browsing Technical Reports by Author "Jensen, Finn B."
Now showing items 1-13 of 13
-
Acoustic impact of upper ocean models
Porter, M. B.; Piacsek, Steve; Henderson, Laurel; Jensen, Finn B. (NATO. SACLANTCEN, 1989/12)The upper mixed-surface layer of the ocean, with its homogeneous vertical temperature profile, provides a somewhat special acoustic propagation environment where the sound speed will increase (due to pressure) down to the ... -
Benchmarking scattering in ocean waveguides
Jensen, Finn B.; Ferla, Carlo M.; Gerstoft, Peter (NATO. SACLANTCEN, 1995/07)Accurate numerical solutions are presented for benchmark problems -
Bottom-interacting ocean acoustics: proceedings of a conference held at SACLANTCEN on 9-13 June 1980
Kuperman, William A.; Jensen, Finn B. (NATO. SACLANTCEN, 1980/07) -
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 -
C-SNAP: Coupled SACLANTCEN Normal mode propagation loss model
Ferla, Carlo M.; Porter, Michael; Jensen, Finn B. (NATO. SACLANTCEN, 1993/12)On the basis of a widely used and efficient range-independent normal mode code, SNAP, and a numerical solution technique for one-way mode coupling obtained from KRAKEN, we have built a range-dependent propagation loss model ... -
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 ... -
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), -
PC-based propagation and sonar prediction models
Dreini, Giancarlo; Isoppo, Cinzia; Jensen, Finn B. (NATO. SACLANTCEN, 1995/12)Six acoustic models available for use on PC's are tested on a series of typical propagation situations from the North Atlantic and the Mediterranean. The model set includes both early US Navy models (ASTRAL, FACT, RAYMODE) ... -
Performance assessment of propagation models in AESS-6.0
Ferla, Carlo M.; Jensen, Finn B. (NATO. SACLANTCEN, 1999/08)A set of AESS propagation-loss predictions has been generated for typical operational scenarios in both deep and shallow water, for two sonar frequencies (500 and 3500 Hz) and for several source-receiver combinations. ... -
Performance assessment of the LYBIN - 2.0 propagation-loss model
Ferla, Carlo M.; Isoppo, Cinzia; Martinelli, Giovanna; Jensen, Finn B. (NATO. SACLANTCEN, 2001/07)A new acoustic model LYBIN has been proposed for inclusion in the AESS model set. In order to determine this model's prediction accuracy and computational efficiency, SACLANTCEN was tasked to test LYBIN on exactly the same ... -
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 -
RAPID RESPONSE, september 1996: modelling of broadband transmission loss along selected tracks in the Strait of Sicily
Ferla, Carlo M.; Jensen, Finn B.; Akal, Tuncay (NATO. SACLANTCEN, 1997/07)A large set of experimental acoustic broadband data in the 50-3200 Hz band is analyzed with the objective of deriving average geoacoustic models for three sites in the Strait of Sicily. The experimental data were obtained ... -
Wave theory modelling of convergence zone propagation in the ocean
Dreini, Giancarlo; Jensen, Finn B. (NATO. SACLANTCEN, 1987/06)Improved numerical techniques together with continual advances in computer technology have now