30 lines
641 B
Matlab
30 lines
641 B
Matlab
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function [lat, lon, h] = ch_ENU2LLA(E, N ,U, lat0, lon0, h0)
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% ENU 转 经纬高
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% E, N ,U 系下增量，单位为m
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% lat0, lon0, h0: 起始点经纬高, 经纬度为rad， 高度为m
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% lat, lon, h 终点经纬高, 经纬度为rad， 高度为m
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%精确解
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XYZ0 = ch_LLA2ECEF(lat0, lon0, h0);
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[~, ~, C_ECEF2ENU, ~]= ch_earth(lat0, lon0, h0);
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dXYZ = C_ECEF2ENU' * [E N U]';
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XYZ = dXYZ + XYZ0;
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[lat, lon, h] = ch_ECEF2LLA(XYZ);
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% % 近似算法
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% R_0 = 6378137; %WGS84 Equatorial radius in meters
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% clat = cos(lat0);
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%
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% dlon = E / (R_0 * clat);
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% dlat = N / R_0;
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% dh = U;
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%
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% lon = lon0 + dlon;
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% lat = lat0 + dlat;
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% h = h0 + dh;
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end
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