Add convenience radar to lon/lat/alt method

Author: deeplycloudy

coordinateSystems.py

@@ -94,7 +94,7 @@ def ctrPosition(self):
             cx, cy, cz = self.fromECEF(ex, ey, ez)
         else:
             cx, cy, cz = 0, 0, 0
-        return cx, cy, cz
+        return cx, cy, cz    
 
     def toECEF(self, x, y, z):
         x += self.cx
@@ -202,8 +202,8 @@ def getSlantRangeElevation(self, groundRange, z):
         el *= 180.0 / pi
 
         return r, el
-            
-    def toECEF(self, r, az, el):
+        
+    def toLonLatAlt(self, r, az, el):
         """Convert slant range r, azimuth az, and elevation el to ECEF system"""
         geoSys = GeographicSystem()
         geodetic = proj4.Geod(ellps='WGS84')
@@ -215,6 +215,10 @@ def toECEF(self, r, az, el):
 
         dist, z = self.getGroundRangeHeight(r,el)
         lon, lat, backAz = geodetic.fwd([self.ctrLon]*n, [self.ctrLat]*n, az, dist) 
+        return lon, lat, z
+            
+    def toECEF(self, r, az, el):
+        lon, lat, z = self.toLonLatAlt(r, az, el)
         return geoSys.toECEF(lon, lat, z.ravel())
 
     def fromECEF(self, x, y, z):