169 lines
6.7 KiB
Python
Executable File
169 lines
6.7 KiB
Python
Executable File
#!/usr/bin/env python3
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# Author: Piyush Agram
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# Copyright 2016
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#Heresh Fattahi, Adopted for stack
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import argparse
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import logging
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import isce
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import isceobj
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import mroipac
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import os
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import s1a_isce_utils as ut
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def createParser():
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parser = argparse.ArgumentParser( description='Use polynomial offsets and create burst by burst interferograms')
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parser.add_argument('-m', '--reference', dest='reference', type=str, required=True,
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help='Directory with reference acquisition')
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parser.add_argument('-s', '--secondary', dest='secondary', type=str, required=True,
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help='Directory with secondary acquisition')
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parser.add_argument('-b', '--baseline_file', dest='baselineFile', type=str, required=True,
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help='An output text file which contains the computed baseline')
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return parser
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def cmdLineParse(iargs = None):
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parser = createParser()
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return parser.parse_args(args=iargs)
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#logger = logging.getLogger('isce.topsinsar.runPreprocessor')
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def main(iargs=None):
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'''Compute baseline.
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'''
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inps=cmdLineParse(iargs)
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from isceobj.Planet.Planet import Planet
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import numpy as np
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#swathList = self._insar.getInputSwathList(self.swaths)
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#commonBurstStartReferenceIndex = [-1] * self._insar.numberOfSwaths
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#commonBurstStartSecondaryIndex = [-1] * self._insar.numberOfSwaths
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#numberOfCommonBursts = [0] * self._insar.numberOfSwaths
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referenceSwathList = ut.getSwathList(inps.reference)
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secondarySwathList = ut.getSwathList(inps.secondary)
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swathList = list(sorted(set(referenceSwathList+secondarySwathList)))
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#catalog = isceobj.Catalog.createCatalog(self._insar.procDoc.name)
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baselineDir = os.path.dirname(inps.baselineFile)
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os.makedirs(baselineDir, exist_ok=True)
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f = open(inps.baselineFile , 'w')
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for swath in swathList:
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referencexml = os.path.join( inps.reference, 'IW{0}.xml'.format(swath))
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secondaryxml = os.path.join( inps.secondary, 'IW{0}.xml'.format(swath))
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if os.path.exists(referencexml) and os.path.exists(secondaryxml):
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reference = ut.loadProduct(os.path.join(inps.reference , 'IW{0}.xml'.format(swath)))
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secondary = ut.loadProduct(os.path.join(inps.secondary , 'IW{0}.xml'.format(swath)))
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minReference = reference.bursts[0].burstNumber
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maxReference = reference.bursts[-1].burstNumber
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minSecondary = secondary.bursts[0].burstNumber
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maxSecondary = secondary.bursts[-1].burstNumber
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minBurst = max(minSecondary, minReference)
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maxBurst = min(maxSecondary, maxReference)
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print ('minSecondary,maxSecondary',minSecondary, maxSecondary)
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print ('minReference,maxReference',minReference, maxReference)
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print ('minBurst, maxBurst: ', minBurst, maxBurst)
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refElp = Planet(pname='Earth').ellipsoid
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Bpar = []
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Bperp = []
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for ii in range(minBurst, maxBurst + 1):
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###Bookkeeping
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#commonBurstStartReferenceIndex[swath-1] = minBurst
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#commonBurstStartSecondaryIndex[swath-1] = commonSecondaryIndex
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#numberOfCommonBursts[swath-1] = numberCommon
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#catalog.addItem('IW-{0} Number of bursts in reference'.format(swath), reference.numberOfBursts, 'baseline')
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#catalog.addItem('IW-{0} First common burst in reference'.format(swath), minBurst, 'baseline')
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#catalog.addItem('IW-{0} Last common burst in reference'.format(swath), maxBurst, 'baseline')
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#catalog.addItem('IW-{0} Number of bursts in secondary'.format(swath), secondary.numberOfBursts, 'baseline')
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#catalog.addItem('IW-{0} First common burst in secondary'.format(swath), minBurst + burstOffset, 'baseline')
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#catalog.addItem('IW-{0} Last common burst in secondary'.format(swath), maxBurst + burstOffset, 'baseline')
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#catalog.addItem('IW-{0} Number of common bursts'.format(swath), numberCommon, 'baseline')
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#refElp = Planet(pname='Earth').ellipsoid
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#Bpar = []
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#Bperp = []
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#for boff in [0, numberCommon-1]:
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###Baselines at top of common bursts
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mBurst = reference.bursts[ii-minReference]
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sBurst = secondary.bursts[ii-minSecondary]
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###Target at mid range
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tmid = mBurst.sensingMid
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rng = mBurst.midRange
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referenceSV = mBurst.orbit.interpolate(tmid, method='hermite')
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target = mBurst.orbit.rdr2geo(tmid, rng)
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slvTime, slvrng = sBurst.orbit.geo2rdr(target)
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secondarySV = sBurst.orbit.interpolateOrbit(slvTime, method='hermite')
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targxyz = np.array(refElp.LLH(target[0], target[1], target[2]).ecef().tolist())
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mxyz = np.array(referenceSV.getPosition())
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mvel = np.array(referenceSV.getVelocity())
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sxyz = np.array(secondarySV.getPosition())
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aa = np.linalg.norm(sxyz-mxyz)
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costheta = (rng*rng + aa*aa - slvrng*slvrng)/(2.*rng*aa)
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Bpar.append(aa*costheta)
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perp = aa * np.sqrt(1 - costheta*costheta)
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direction = np.sign(np.dot( np.cross(targxyz-mxyz, sxyz-mxyz), mvel))
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Bperp.append(direction*perp)
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#catalog.addItem('IW-{0} Bpar at midrange for first common burst'.format(swath), Bpar[0], 'baseline')
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#catalog.addItem('IW-{0} Bperp at midrange for first common burst'.format(swath), Bperp[0], 'baseline')
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#catalog.addItem('IW-{0} Bpar at midrange for last common burst'.format(swath), Bpar[1], 'baseline')
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#catalog.addItem('IW-{0} Bperp at midrange for last common burst'.format(swath), Bperp[1], 'baseline')
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print('Bprep: ', Bperp)
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print('Bpar: ', Bpar)
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f.write('swath: IW{0}'.format(swath) + '\n')
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f.write('Bperp (average): ' + str(np.mean(Bperp)) + '\n')
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f.write('Bpar (average): ' + str(np.mean(Bpar)) + '\n')
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f.close()
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#else:
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# print('Skipping processing for swath number IW-{0}'.format(swath))
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#self._insar.commonBurstStartReferenceIndex = commonBurstStartReferenceIndex
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#self._insar.commonBurstStartSecondaryIndex = commonBurstStartSecondaryIndex
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#self._insar.numberOfCommonBursts = numberOfCommonBursts
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#if not any([x>=2 for x in self._insar.numberOfCommonBursts]):
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# print('No swaths contain any burst overlaps ... cannot continue for interferometry applications')
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#catalog.printToLog(logger, "runComputeBaseline")
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#self._insar.procDoc.addAllFromCatalog(catalog)
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if __name__ == '__main__':
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'''
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Main driver.
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'''
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main()
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