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ISCE_INSAR
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update ALOS-2 ionospheric correction

LT1AB
CunrenLiang 2020-04-30 23:43:41 -07:00 committed by piyushrpt
parent fba6542a10
commit 62726a5714
2 changed files with 23 additions and 3 deletions
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16
components/isceobj/Alos2Proc/runIonFilt.py
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@ -80,11 +80,17 @@ def runIonFilt(self):
cor[np.nonzero(cor<0)] = 0.0
cor[np.nonzero(cor>1)] = 0.0
#remove water body
wbd = np.fromfile('wbd'+ml2+'.wbd', dtype=np.int8).reshape(length, width)
cor[np.nonzero(wbd==-1)] = 0.0
#remove small values
cor[np.nonzero(cor<corThresholdAdj)] = 0.0
#compute ionosphere
fl = SPEED_OF_LIGHT / self._insar.subbandRadarWavelength[0]
fu = SPEED_OF_LIGHT / self._insar.subbandRadarWavelength[1]
adjFlag = 1
cor[np.nonzero(cor<corThresholdAdj)] = 0.0
ionos = computeIonosphere(lowerUnw, upperUnw, cor**corOrderAdj, fl, fu, adjFlag, 0)
#dump ionosphere
@ -131,13 +137,13 @@ def runIonFilt(self):
# 1 is not good for low coherence case, changed to 20
#corOrderFit = 1
corOrderFit = 20
corOrderFilt = 20
corOrderFilt = 14
else:
#parameters for using lower/upper band coherence
corfile = subbandPrefix[0]+ml2+'.cor'
corThresholdFit = 0.4
corOrderFit = 10
corOrderFilt = 10
corOrderFilt = 4
#################################################
@ -166,6 +172,10 @@ def runIonFilt(self):
cor[np.nonzero(cor<0)] = 0.0
cor[np.nonzero(cor>1)] = 0.0
#remove water body
wbd = np.fromfile('wbd'+ml2+'.wbd', dtype=np.int8).reshape(length, width)
cor[np.nonzero(wbd==-1)] = 0.0
# #applying water body mask here
# waterBodyFile = 'wbd'+ml2+'.wbd'
# if os.path.isfile(waterBodyFile):

10
components/isceobj/Alos2Proc/runIonUwrap.py
View File

@ -25,6 +25,7 @@ def runIonUwrap(self):
masterTrack = self._insar.loadTrack(master=True)
slaveTrack = self._insar.loadTrack(master=False)
wbdFile = os.path.abspath(self._insar.wbd)
from isceobj.Alos2Proc.runIonSubband import defineIonDir
ionDir = defineIonDir()
@ -40,6 +41,7 @@ def runIonUwrap(self):
############################################################
from isceobj.Alos2Proc.Alos2ProcPublic import create_xml
from contrib.alos2proc.alos2proc import look
from isceobj.Alos2Proc.Alos2ProcPublic import waterBodyRadar
ml2 = '_{}rlks_{}alks'.format(self._insar.numberRangeLooks1*self._insar.numberRangeLooksIon,
self._insar.numberAzimuthLooks1*self._insar.numberAzimuthLooksIon)
@ -69,6 +71,14 @@ def runIonUwrap(self):
# look(wbdOutFile, 'wbd'+ml2+'.wbd', width, self._insar.numberRangeLooksIon, self._insar.numberAzimuthLooksIon, 0, 0, 1)
# create_xml('wbd'+ml2+'.wbd', width2, length2, 'byte')
#water body
if k == 0:
look(os.path.join(fullbandDir, self._insar.latitude), 'lat'+ml2+'.lat', width, self._insar.numberRangeLooksIon, self._insar.numberAzimuthLooksIon, 3, 0, 1)
look(os.path.join(fullbandDir, self._insar.longitude), 'lon'+ml2+'.lon', width, self._insar.numberRangeLooksIon, self._insar.numberAzimuthLooksIon, 3, 0, 1)
create_xml('lat'+ml2+'.lat', width2, length2, 'double')
create_xml('lon'+ml2+'.lon', width2, length2, 'double')
waterBodyRadar('lat'+ml2+'.lat', 'lon'+ml2+'.lon', wbdFile, 'wbd'+ml2+'.wbd')
############################################################
# STEP 2. compute coherence