diff --git a/contrib/stack/stripmapStack/unpackFrame_ROIPAC_raw.py b/contrib/stack/stripmapStack/unpackFrame_ROIPAC_raw.py
index 10988dc4e..8584d87c2 100755
--- a/contrib/stack/stripmapStack/unpackFrame_ROIPAC_raw.py
+++ b/contrib/stack/stripmapStack/unpackFrame_ROIPAC_raw.py
@@ -1,83 +1,83 @@
-#!/usr/bin/env python3
-
-import isce
-from isceobj.Sensor import createSensor
-import shelve
-import argparse
-import glob
-from isceobj.Util import Poly1D
-from isceobj.Planet.AstronomicalHandbook import Const
-import os
-from mroipac.dopiq.DopIQ import DopIQ
-import copy
-
-def cmdLineParse():
-    '''
-    Command line parser.
-    '''
-
-    parser = argparse.ArgumentParser(description='Unpack raw data and store metadata in pickle file.')
-    parser.add_argument('-i','--input', dest='rawfile', type=str,
-            required=True, help='Input ROI_PAC file')
-    parser.add_argument('-r','--hdr', dest='hdrfile', type=str,
-            required=True, help='Input hdr (orbit) file')
-    parser.add_argument('-o', '--output', dest='slcdir', type=str,
-            required=True, help='Output data directory')
-
-    return parser.parse_args()
-
-
-def unpack(rawname, hdrname, slcname):
-    '''
-    Unpack raw to binary file.
-    '''
-
-    if not os.path.isdir(slcname):
-        os.mkdir(slcname)
-
-    date = os.path.basename(slcname)
-    obj = createSensor('ROI_PAC')
-    obj.configure()
-    obj._rawFile = rawname
-    obj._hdrFile = hdrname
-    obj.output = os.path.join(slcname, date+'.raw')
-
-    print(obj._rawFile)
-    print(obj._hdrFile)
-    print(obj.output)
-    obj.extractImage()
-    obj.frame.getImage().renderHdr()
-
-
-    #####Estimate doppler
-    dop = DopIQ()
-    dop.configure()
-
-    img = copy.deepcopy(obj.frame.getImage())
-    img.setAccessMode('READ')
-
-    dop.wireInputPort('frame', object=obj.frame)
-    dop.wireInputPort('instrument', object=obj.frame.instrument)
-    dop.wireInputPort('image', object=img)
-    dop.calculateDoppler()
-    dop.fitDoppler()
-    fit = dop.quadratic
-    coef = [fit['a'], fit['b'], fit['c']]
-
-    print(coef)
-    obj.frame._dopplerVsPixel = [x*obj.frame.PRF for x in coef]
-
-    pickName = os.path.join(slcname, 'raw')
-    with shelve.open(pickName) as db:
-        db['frame'] = obj.frame
-
-if __name__ == '__main__':
-    '''
-    Main driver.
-    '''
-
-    inps = cmdLineParse()
-    if inps.slcdir.endswith('/'):
-        inps.slcdir = inps.slcdir[:-1]
-
-    unpack(inps.rawfile, inps.hdrfile, inps.slcdir)
+#!/usr/bin/env python3
+
+import isce
+from isceobj.Sensor import createSensor
+import shelve
+import argparse
+import os
+from mroipac.dopiq.DopIQ import DopIQ
+import copy
+
+def cmdLineParse():
+    '''
+    Command line parser.
+    '''
+
+    parser = argparse.ArgumentParser(description='Unpack raw data and store metadata in pickle file.')
+    parser.add_argument('-i','--input', dest='rawfile', type=str,
+            required=True, help='Input ROI_PAC file')
+    parser.add_argument('-r','--hdr', dest='hdrfile', type=str,
+            required=True, help='Input hdr (orbit) file')
+    parser.add_argument('-o', '--output', dest='slcdir', type=str,
+            required=True, help='Output data directory')
+
+    parser.add_argument('-d','--default', dest='defaultDoppler', type=str, action='store_true'
+            required=False, help='use DEFAULT to estimate doppler')
+
+    return parser.parse_args()
+
+
+def unpack(rawname, hdrname, slcname, default):
+    '''
+    Unpack raw to binary file.
+    '''
+
+    if not os.path.isdir(slcname):
+        os.mkdir(slcname)
+    date = os.path.basename(slcname)
+    obj = createSensor('ROI_PAC')
+    obj.configure()
+    obj._rawFile = os.path.abspath(rawname)
+    obj._hdrFile = hdrname
+    obj.output = os.path.join(slcname, date+'.raw')
+
+    print(obj._rawFile)
+    print(obj._hdrFile)
+    print(obj.output)
+    obj.extractImage()
+    obj.frame.getImage().renderHdr()
+
+    if defaultDoppler == True:
+        obj.extractDoppler()
+    else:
+        dop = DopIQ()
+        dop.configure()
+
+        img = copy.deepcopy(obj.frame.getImage())
+        img.setAccessMode('READ')
+
+        dop.wireInputPort('frame', object=obj.frame)
+        dop.wireInputPort('instrument', object=obj.frame.instrument)
+        dop.wireInputPort('image', object=img)
+        dop.calculateDoppler()
+        dop.fitDoppler()
+        fit = dop.quadratic
+        coef = [fit['a'], fit['b'], fit['c']]
+
+        print(coef)
+        obj.frame._dopplerVsPixel = [x*obj.frame.PRF for x in coef]
+
+    pickName = os.path.join(slcname, 'raw')
+    with shelve.open(pickName) as db:
+        db['frame'] = obj.frame
+
+if __name__ == '__main__':
+    '''
+    Main driver.
+    '''
+
+    inps = cmdLineParse()
+    if inps.slcdir.endswith('/'):
+        inps.slcdir = inps.slcdir[:-1]
+
+    unpack(inps.rawfile, inps.hdrfile, inps.slcdir, inps.defaultDoppler)