203 lines
6.9 KiB
Python
Executable File
203 lines
6.9 KiB
Python
Executable File
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# Copyright 2012 California Institute of Technology. ALL RIGHTS RESERVED.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# United States Government Sponsorship acknowledged. This software is subject to
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# U.S. export control laws and regulations and has been classified as 'EAR99 NLR'
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# (No [Export] License Required except when exporting to an embargoed country,
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# end user, or in support of a prohibited end use). By downloading this software,
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# the user agrees to comply with all applicable U.S. export laws and regulations.
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# The user has the responsibility to obtain export licenses, or other export
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# authority as may be required before exporting this software to any 'EAR99'
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# embargoed foreign country or citizen of those countries.
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#
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# Author: Gaiangi Sacco
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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import logging
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import isceobj
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import mroipac
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from iscesys.ImageUtil.ImageUtil import ImageUtil as IU
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from isceobj import Constants as CN
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from mroipac.ampcor.Ampcor import Ampcor
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logger = logging.getLogger('isce.insar.runOffsetprf')
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def runOffsetprf(self):
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from isceobj.Catalog import recordInputs
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logger.info("Calculate offset between slcs using ampcor")
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masterFrame = self._insar.getMasterFrame()
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slaveFrame = self._insar.getSlaveFrame()
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masterOrbit = self._insar.getMasterOrbit()
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slaveOrbit = self._insar.getSlaveOrbit()
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prf1 = masterFrame.getInstrument().getPulseRepetitionFrequency()
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prf2 = slaveFrame.getInstrument().getPulseRepetitionFrequency()
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nearRange1 = self.insar.formSLC1.startingRange
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nearRange2 = self.insar.formSLC2.startingRange
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fs1 = masterFrame.getInstrument().getRangeSamplingRate()
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fs2 = slaveFrame.getInstrument().getRangeSamplingRate()
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###There seems to be no other way of determining image length - Piyush
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patchSize = self._insar.getPatchSize()
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numPatches = self._insar.getNumberPatches()
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valid_az_samples = self._insar.getNumberValidPulses()
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firstAc = self._insar.getFirstSampleAcrossPrf()
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firstDown = self._insar.getFirstSampleDownPrf()
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numLocationAcross = self._insar.getNumberLocationAcrossPrf()
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numLocationDown = self._insar.getNumberLocationDownPrf()
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delRg1 = CN.SPEED_OF_LIGHT / (2*fs1)
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delRg2 = CN.SPEED_OF_LIGHT / (2*fs2)
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coarseRange = (nearRange1 - nearRange2) / delRg2
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coarseAcross = int(coarseRange + 0.5)
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if(coarseRange <= 0):
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coarseAcross = int(coarseRange - 0.5)
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pass
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if self.grossRg is not None:
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coarseAcross = self.grossRg
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pass
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s1 = self.insar.formSLC1.mocompPosition[1][0]
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s1_2 = self.insar.formSLC1.mocompPosition[1][1]
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s2 = self.insar.formSLC2.mocompPosition[1][0]
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s2_2 = self.insar.formSLC2.mocompPosition[1][1]
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coarseAz = int(
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(s1 - s2)/(s2_2 - s2) + prf2*(1/prf1 - 1/prf2)*(patchSize - valid_az_samples)/2)
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coarseDown = int(coarseAz + 0.5)
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if(coarseAz <= 0):
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coarseDown = int(coarseAz - 0.5)
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pass
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if self.grossAz is not None:
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coarseDown = self.grossAz
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pass
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coarseAcross = 0 + coarseAcross
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coarseDown = 0 + coarseDown
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mSlcImage = self._insar.getMasterSlcImage()
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mSlc = isceobj.createSlcImage()
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IU.copyAttributes(mSlcImage, mSlc)
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accessMode = 'read'
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mSlc.setAccessMode(accessMode)
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mSlc.createImage()
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masterWidth = mSlc.getWidth()
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masterLength = mSlc.getLength()
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sSlcImage = self._insar.getSlaveSlcImage()
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sSlc = isceobj.createSlcImage()
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IU.copyAttributes(sSlcImage, sSlc)
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accessMode = 'read'
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sSlc.setAccessMode(accessMode)
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sSlc.createImage()
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slaveWidth = sSlc.getWidth()
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slaveLength = sSlc.getLength()
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objAmpcor = Ampcor(name='insarapp_slcs_ampcor')
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objAmpcor.configure()
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objAmpcor.setImageDataType1('complex')
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objAmpcor.setImageDataType2('complex')
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if objAmpcor.acrossGrossOffset:
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coarseAcross = objAmpcor.acrossGrossOffset
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if objAmpcor.downGrossOffset:
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coarseDown = objAmpcor.downGrossOffset
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logger.debug("Gross Across: %s" % (coarseAcross))
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logger.debug("Gross Down: %s" % (coarseDown))
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xMargin = 2*objAmpcor.searchWindowSizeWidth + objAmpcor.windowSizeWidth
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yMargin = 2*objAmpcor.searchWindowSizeHeight + objAmpcor.windowSizeHeight
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#####Compute image positions
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offAc = max(firstAc,-coarseAcross)+xMargin
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offDn = max(firstDown,-coarseDown)+yMargin
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offAcmax = int(coarseAcross + ((fs2/fs1)-1)*masterWidth)
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logger.debug("Gross Max Across: %s" % (offAcmax))
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lastAc = int(min(masterWidth, slaveWidth- offAcmax) - xMargin)
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offDnmax = int(coarseDown + ((prf2/prf1)-1)*masterLength)
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logger.debug("Gross Max Down: %s" % (offDnmax))
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lastDown = int( min(masterLength, slaveLength-offDnmax) - yMargin)
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if not objAmpcor.firstSampleAcross:
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objAmpcor.setFirstSampleAcross(offAc)
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if not objAmpcor.lastSampleAcross:
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objAmpcor.setLastSampleAcross(lastAc)
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if not objAmpcor.numberLocationAcross:
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objAmpcor.setNumberLocationAcross(numLocationAcross)
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if not objAmpcor.firstSampleDown:
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objAmpcor.setFirstSampleDown(offDn)
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if not objAmpcor.lastSampleDown:
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objAmpcor.setLastSampleDown(lastDown)
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if not objAmpcor.numberLocationDown:
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objAmpcor.setNumberLocationDown(numLocationDown)
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#####Override gross offsets if not provided
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if not objAmpcor.acrossGrossOffset:
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objAmpcor.setAcrossGrossOffset(coarseAcross)
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if not objAmpcor.downGrossOffset:
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objAmpcor.setDownGrossOffset(coarseDown)
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#####User inputs are overriden here
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objAmpcor.setFirstPRF(prf1)
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objAmpcor.setSecondPRF(prf2)
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objAmpcor.setFirstRangeSpacing(delRg1)
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objAmpcor.setSecondRangeSpacing(delRg2)
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# Record the inputs
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recordInputs(self._insar.procDoc,
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objAmpcor,
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"runOffsetprf",
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logger,
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"runOffsetprf")
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objAmpcor.ampcor(mSlc,sSlc)
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# Record the outputs
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from isceobj.Catalog import recordOutputs
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recordOutputs(self._insar.procDoc,
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objAmpcor,
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"runOffsetprf",
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logger,
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"runOffsetprf")
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mSlc.finalizeImage()
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sSlc.finalizeImage()
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# save the input offset field for the record
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self._insar.setOffsetField(objAmpcor.getOffsetField())
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self._insar.setRefinedOffsetField(objAmpcor.getOffsetField())
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