192 lines
6.7 KiB
Python
192 lines
6.7 KiB
Python
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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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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from iscesys.ImageUtil.ImageUtil import ImageUtil as IU
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from isceobj import Constants as CN
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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")
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referenceFrame = self._insar.getReferenceFrame()
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secondaryFrame = self._insar.getSecondaryFrame()
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referenceOrbit = self._insar.getReferenceOrbit()
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secondaryOrbit = self._insar.getSecondaryOrbit()
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prf1 = referenceFrame.getInstrument().getPulseRepetitionFrequency()
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prf2 = secondaryFrame.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 = referenceFrame.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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objSlc = self._insar.getReferenceSlcImage()
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# widthSlc = max(self._insar.getReferenceSlcImage().getWidth(),
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# self._insar.getSecondarySlcImage().getWidth())
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widthSlc = self._insar.getReferenceSlcImage().getWidth()
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coarseRange = (nearRange1 - nearRange2) / (CN.SPEED_OF_LIGHT / (2 * fs1))
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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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print("gross Rg: ",self.grossRg)
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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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time1, schPosition1, schVelocity1, offset1 = referenceOrbit._unpackOrbit()
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time2, schPosition2, schVelocity2, offset2 = secondaryOrbit._unpackOrbit()
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s1 = schPosition1[0][0]
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s1_2 = schPosition1[1][0]
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s2 = schPosition2[0][0]
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s2_2 = schPosition2[1][0]
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coarseAz = int(
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(s1 - s2)/(s2_2 - s2) + prf2*(1/prf1 - 1/prf2)*
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(patchSize - valid_az_samples)/2
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)
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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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print("gross Az: ", self.grossAz)
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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.getReferenceSlcImage()
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mSlc = isceobj.createSlcImage()
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IU.copyAttributes(mSlcImage, mSlc)
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# scheme = 'BIL'
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# mSlc.setInterleavedScheme(scheme) #Faster access with bands
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accessMode = 'read'
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mSlc.setAccessMode(accessMode)
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mSlc.createImage()
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sSlcImage = self._insar.getSecondarySlcImage()
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sSlc = isceobj.createSlcImage()
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IU.copyAttributes(sSlcImage, sSlc)
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# scheme = 'BIL'
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# sSlc.setInterleavedScheme(scheme) #Faster access with bands
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accessMode = 'read'
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sSlc.setAccessMode(accessMode)
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sSlc.createImage()
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objOffset = isceobj.createEstimateOffsets(name='insarapp_slcs_estoffset')
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objOffset.configure()
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if not objOffset.searchWindowSize:
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objOffset.setSearchWindowSize(self.offsetSearchWindowSize, self.sensorName)
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margin = 2*objOffset.searchWindowSize + objOffset.windowSize
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offAc = max(firstAc,-coarseAcross)+margin+1
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offDn = max(firstDown,-coarseDown)+margin+1
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mWidth = mSlc.getWidth()
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sWidth = sSlc.getWidth()
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mLength = mSlc.getLength()
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sLength = sSlc.getLength()
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offDnmax = int(coarseDown + ((prf2/prf1)-1)*mLength)
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lastAc = int(min(mWidth, sWidth-coarseAcross) - margin-1)
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lastDown = int(min(mLength, sLength-offDnmax) - margin-1)
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if not objOffset.firstSampleAcross:
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objOffset.setFirstSampleAcross(offAc)
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if not objOffset.lastSampleAcross:
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objOffset.setLastSampleAcross(lastAc)
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if not objOffset.firstSampleDown:
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objOffset.setFirstSampleDown(offDn)
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if not objOffset.lastSampleDown:
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objOffset.setLastSampleDown(lastDown)
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if not objOffset.numberLocationAcross:
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objOffset.setNumberLocationAcross(numLocationAcross)
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if not objOffset.numberLocationDown:
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objOffset.setNumberLocationDown(numLocationDown)
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if not objOffset.acrossGrossOffset:
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objOffset.setAcrossGrossOffset(coarseAcross)
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if not objOffset.downGrossOffset:
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objOffset.setDownGrossOffset(coarseDown)
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###Always set these values
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objOffset.setFirstPRF(prf1)
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objOffset.setSecondPRF(prf2)
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# Record the inputs
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recordInputs(self._insar.procDoc,
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objOffset,
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"runOffsetprf",
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logger,
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"runOffsetprf")
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objOffset.estimateoffsets(image1=mSlc,image2=sSlc,band1=0,band2=0)
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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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objOffset,
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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(objOffset.getOffsetField())
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self._insar.setRefinedOffsetField(objOffset.getOffsetField())
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