79 lines
3.7 KiB
Python
Executable File
79 lines
3.7 KiB
Python
Executable File
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# Copyright 2013 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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# Authors: Kosal Khun, Marco Lavalle
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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import stdproc
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import isceobj
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from isceobj import Constants
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def runResamp_slc(self):
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frame = self._isce.frames[self._isce.refScene][self._isce.refPol]
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instrument = frame.instrument
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fs = instrument.getRangeSamplingRate()
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pixelSpacing = Constants.SPEED_OF_LIGHT / (2.0 * fs)
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dopplerCentroid = self._isce.dopplerCentroid.fractionalCentroid
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for sceneid1, sceneid2 in self._isce.pairsToCoreg:
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pair = (sceneid1, sceneid2)
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offsetField = self._isce.refinedOffsetFields[pair]
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for pol in self._isce.selectedPols:
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slcImage2 = self._isce.slcImages[sceneid2][pol]
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resampledFilename = slcImage2.filename[:-3] + 'resampled.slc'
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sid = self._isce.formatname(pair, pol)
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catalog = isceobj.Catalog.createCatalog(self._isce.procDoc.name)
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resampSlcImage = run(slcImage2, resampledFilename, offsetField, instrument, pixelSpacing, dopplerCentroid, catalog=catalog, sceneid=sid)
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self._isce.procDoc.addAllFromCatalog(catalog)
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self._isce.slcImages[sceneid2][pol] = resampSlcImage
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def run(slcImage, resampledFilename, offsetField, instrument, pixelSpacing, doppler, catalog=None, sceneid='NO_ID'):
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# Create the resampled SLC image
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resampledSlcImage = isceobj.createSlcImage()
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resampledSlcImage.setFilename(resampledFilename)
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resampledSlcImage.setAccessMode('write')
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resampledSlcImage.setDataType('CFLOAT')
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resampledSlcImage.setWidth(slcImage.width)
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resampledSlcImage.createImage()
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resamp = stdproc.createResamp_slc()
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resamp.setNumberLines(slcImage.length)
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resamp.setNumberRangeBin(slcImage.width)
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resamp.setNumberFitCoefficients(1)
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resamp.setSlantRangePixelSpacing(pixelSpacing)
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resamp.setDopplerCentroidCoefficients([doppler, 0.0, 0.0, 0.0])
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resamp.wireInputPort(name='offsets', object=offsetField)
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resamp.wireInputPort(name='instrument', object=instrument)
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resamp.stdWriter = stdWriter.set_file_tags("resamp_slc",
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"log",
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"err",
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"out")
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resamp.resamp_slc(slcImage, resampledSlcImage)
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slcImage.finalizeImage()
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resampledSlcImage.finalizeImage()
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return resampledSlcImage
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