diff --git a/tools/RAiDER/constants.py b/tools/RAiDER/constants.py
index 408fbd81c..c7ba99ec2 100644
--- a/tools/RAiDER/constants.py
+++ b/tools/RAiDER/constants.py
@@ -9,7 +9,7 @@
 import numpy as np
 
 _ZMIN = np.float64(-100)   # minimum required height
-_ZREF = np.float64(15000)  # maximum requierd height
+_ZREF = np.float64(80000)  # default maximum height
 _STEP = np.float64(15.0)     # integration step size in meters
 
 _g0 = np.float64(9.80665)
diff --git a/tools/RAiDER/losreader.py b/tools/RAiDER/losreader.py
index d0fbcfb26..1351feb4b 100644
--- a/tools/RAiDER/losreader.py
+++ b/tools/RAiDER/losreader.py
@@ -235,7 +235,7 @@ def inc_hd_to_enu(incidence, heading):
     Parameters
     ----------
     incidence: ndarray	       - incidence angle in deg from vertical
-    heading: ndarray 	       - heading angle in deg clockwise from north
+    heading: ndarray 	       - heading angle in deg counter-clockwise from east
     lats/lons/heights: ndarray - WGS84 ellipsoidal target (ground pixel) locations
 
     Returns