FIU_Sven

Acoustic Scattering basics Lecture from 29th of April 2020

contact sgastauer@ucsd.edu for more information or comments.

• Find the lecture presentation as pptx file in the presentation folder

QuickStart

Easiest way to use the scripts, is to clone the repository and open the SvenFIU R Project file in RStudio.

• DEMO.R runs through the demonstrations chronologically as they were used during the original lecture

All files

• FIU_cal_demoApp.R :

  • R shiny app simulating calibraiton spheres

  source('./R/FIU_cal_demoApp.R')
  FIUCalDemo()
  

• FIU_shape_dependence_demo.RMD & FIU_shape_dependence_demo.html

  • R Markdown Document demonstrating the influence of different simplified krill shapes on the estimated target strength

• FIU_sphere_demoApp

  • Analytical solution for a fluid-like sphere. Shiny app that allows quick analysis of the effect of size, ambient sound speed and density as well as g and h on TS estimates

  source('./R/FIU_sphere_demoApp.R')
  FIUSphereDemo()
  

• helper_functions

  • At the moment of writing this contains functions to check package availability and automated installation of missing packages and a function to opend HTML files in a browser from within R.

• skaret_vignette.Rmd, skaret_vignette.html, skaret_vignette.pdf

  • Vignette demonstrating the effect of L/a on the estimates of TS based on the krill shape from the Skaret et al paper.

• TSCal.R

  • old R function to compute the TS of a standard calibrations sphere

  #load the ts.cal function
  source('./R/TSCal.R')
  results <- ts.cal(freq=seq(90,170,by=1),c=1480,plot="yes")
  

• TSCal_example.R

  • Some examples on how to compute the TS values of standard calibraiton spheres.