Home > matlab > aer2ecef.m

aer2ecef

PURPOSE ^

aer2ecef convert azimuth, elevation, range to target from observer to ECEF coordinates

SYNOPSIS ^

function [x,y,z] = aer2ecef(az, el, slantRange, lat0, lon0, alt0, spheroid, angleUnit)

DESCRIPTION ^

aer2ecef  convert azimuth, elevation, range to target from observer to ECEF coordinates

 Inputs
 ------
 az, el, slantrange: look angles and distance to point under test (degrees, degrees, meters)
 az: azimuth clockwise from local north
 el: elevation angle above local horizon
 lat0, lon0, alt0: ellipsoid geodetic coordinates of observer/reference (degrees, degrees, meters)
 spheroid: referenceEllipsoid parameter struct
 angleUnit: string for angular units. Default 'd': degrees

 outputs
 -------
 x,y,z: Earth Centered Earth Fixed (ECEF) coordinates of test point (meters)

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function [x,y,z] = aer2ecef(az, el, slantRange, lat0, lon0, alt0, spheroid, angleUnit)
0002 %aer2ecef  convert azimuth, elevation, range to target from observer to ECEF coordinates
0003 %
0004 % Inputs
0005 % ------
0006 % az, el, slantrange: look angles and distance to point under test (degrees, degrees, meters)
0007 % az: azimuth clockwise from local north
0008 % el: elevation angle above local horizon
0009 % lat0, lon0, alt0: ellipsoid geodetic coordinates of observer/reference (degrees, degrees, meters)
0010 % spheroid: referenceEllipsoid parameter struct
0011 % angleUnit: string for angular units. Default 'd': degrees
0012 %
0013 % outputs
0014 % -------
0015 % x,y,z: Earth Centered Earth Fixed (ECEF) coordinates of test point (meters)
0016      
0017   if nargin < 7 || isempty(spheroid), spheroid = wgs84Ellipsoid(); end
0018   if nargin < 8, angleUnit = 'd'; end
0019 
0020   %% Origin of the local system in geocentric coordinates.
0021   [x0, y0, z0] = geodetic2ecef(spheroid, lat0, lon0, alt0, angleUnit);
0022   %% Convert Local Spherical AER to ENU
0023   [e, n, u] = aer2enu(az, el, slantRange, angleUnit);
0024   %% Rotating ENU to ECEF
0025   [dx, dy, dz] = enu2uvw(e, n, u, lat0, lon0, angleUnit);
0026   %% Origin + offset from origin equals position in ECEF
0027   x = x0 + dx;
0028   y = y0 + dy;
0029   z = z0 + dz;
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.
0040

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