P4X.lin: Find Ray Parameter for Distance

In AtmRay: Acoustic Traveltime Calculations for 1-D Atmospheric Models

Description

Calculates ray parameter and azimuth of a ray that reaches some given point, using a 2-D iterative optimization search.

Usage

P4X.lin(x, y, zs, zr, ATM = CheckAtm.lin(list()), maxerror = 3) 

Arguments

x	Abscissa of receiver relative to source (m)
y	Ordinate of receiver relative to source (m)
zs	Elevation of source (m)
zr	Elevation of receiver (m)
ATM	Linear atmosphere
maxerror	Maximum permitted error for solution (m)

Details

'maxerror' should be set with the necessary arrival time precision in mind. Smaller values of maxerror will produce more accurate arrival locations (and arrival times), but will require longer calculation times.

Value

List with following elements:

p	ray parameter
az	azimuth
error	distance between inputs (x,y) and final position of result ray

Author(s)

Jake Anderson

Examples

ATM = CheckAtm.lin()
P4X.lin(100, 100, 100, 00, ATM)
P4X.lin(100, 100, 100, 00, ATM, 0.01)

AtmRay documentation built on May 2, 2019, 6:52 a.m.