Home > matlab > geodetic2ecef.m

geodetic2ecef

PURPOSE ^

geodetic2ecef convert from geodetic to ECEF coordiantes

SYNOPSIS ^

function [x,y,z] = geodetic2ecef(spheroid, lat, lon, alt, angleUnit)

DESCRIPTION ^

geodetic2ecef   convert from geodetic to ECEF coordiantes

 Inputs
 ------
 lat,lon, alt:  ellipsoid geodetic coordinates of point(s) (degrees, degrees, meters)
 spheroid: referenceEllipsoid parameter struct
 angleUnit: string for angular units. Default 'd': degrees

 outputs
 -------
 x,y,z:  ECEF coordinates of test point(s) (meters)

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function [x,y,z] = geodetic2ecef(spheroid, lat, lon, alt,  angleUnit)
0002 %geodetic2ecef   convert from geodetic to ECEF coordiantes
0003 %
0004 % Inputs
0005 % ------
0006 % lat,lon, alt:  ellipsoid geodetic coordinates of point(s) (degrees, degrees, meters)
0007 % spheroid: referenceEllipsoid parameter struct
0008 % angleUnit: string for angular units. Default 'd': degrees
0009 %
0010 % outputs
0011 % -------
0012 % x,y,z:  ECEF coordinates of test point(s) (meters)
0013 %
0014 
0015   if isempty(spheroid), spheroid = wgs84Ellipsoid(); end
0016   
0017   if nargin < 5 || isempty(angleUnit) || strcmpi(angleUnit(1),'d')
0018     lat = deg2rad(lat);
0019     lon = deg2rad(lon);
0020   end
0021  
0022   
0023 %% Radius of curvature of the prime vertical section
0024   N = get_radius_normal(lat, spheroid);
0025 %% Compute cartesian (geocentric) coordinates given  (curvilinear) geodetic coordinates.
0026   
0027   x = (N + alt) .* cos(lat) .* cos(lon);
0028   y = (N + alt) .* cos(lat) .* sin(lon);
0029   z = (N .* (spheroid.SemiminorAxis / spheroid.SemimajorAxis)^2 + alt) .* sin(lat);
0030         
0031 end
0032  
0033 % Copyright (c) 2014-2018 Michael Hirsch, Ph.D.
0034 % Copyright (c) 2013, Felipe Geremia Nievinski
0035 %
0036 % Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
0037 % 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
0038 % 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
0039 % THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Generated on Sun 28-Jan-2018 22:54:10 by m2html © 2005