ecef2aer convert ECEF of target to azimuth, elevation, slant range from observer Inputs ------ x,y,z: Earth Centered Earth Fixed (ECEF) coordinates of test point (meters) 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 ------- 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
0001 function [az, el, slantRange] = ecef2aer(x, y, z, lat0, lon0, alt0, spheroid, angleUnit) 0002 %ecef2aer convert ECEF of target to azimuth, elevation, slant range from observer 0003 % 0004 % Inputs 0005 % ------ 0006 % x,y,z: Earth Centered Earth Fixed (ECEF) coordinates of test point (meters) 0007 % lat0, lon0, alt0: ellipsoid geodetic coordinates of observer/reference (degrees, degrees, meters) 0008 % spheroid: referenceEllipsoid parameter struct 0009 % angleUnit: string for angular units. Default 'd': degrees 0010 % 0011 % Outputs 0012 % ------- 0013 % az, el, slantrange: look angles and distance to point under test (degrees, degrees, meters) 0014 % az: azimuth clockwise from local north 0015 % el: elevation angle above local horizon 0016 0017 if nargin < 7, spheroid = []; end 0018 if nargin < 8, angleUnit= []; end 0019 0020 [e, n, u] = ecef2enu(x, y, z, lat0, lon0, alt0, spheroid, angleUnit); 0021 [az,el,slantRange] = enu2aer(e, n, u, angleUnit); 0022 0023 end 0024 0025 % Copyright (c) 2014-2018 Michael Hirsch, Ph.D. 0026 % Copyright (c) 2013, Felipe Geremia Nievinski 0027 % 0028 % Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 0029 % 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 0030 % 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. 0031 % 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.