81 lines
1.9 KiB
Python
81 lines
1.9 KiB
Python
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#!/usr/bin/env python3
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import isce
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from isceobj.Sensor import createSensor
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import shelve
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import argparse
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import glob
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from isceobj.Util import Poly1D
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from isceobj.Planet.AstronomicalHandbook import Const
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import os
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def cmdLineParse():
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'''
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Command line parser.
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'''
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parser = argparse.ArgumentParser(description='Unpack CSK SLC data and store metadata in pickle file.')
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parser.add_argument('-i','--input', dest='h5dir', type=str,
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required=True, help='Input CSK directory')
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parser.add_argument('-o', '--output', dest='slcdir', type=str,
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required=True, help='Output SLC directory')
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return parser.parse_args()
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def unpack(hdf5, slcname):
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'''
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Unpack HDF5 to binary SLC file.
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'''
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fname = glob.glob(os.path.join(hdf5,'*.h5'))[0]
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if not os.path.isdir(slcname):
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os.mkdir(slcname)
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date = os.path.basename(slcname)
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obj = createSensor('KOMPSAT5')
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obj.hdf5 = fname
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obj.output = os.path.join(slcname, date+'.slc')
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obj.extractImage()
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obj.frame.getImage().renderHdr()
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coeffs = obj.dopplerCoeffs
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dr = obj.frame.getInstrument().getRangePixelSize()
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rref = 0.5 * Const.c * obj.rangeRefTime
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r0 = obj.frame.getStartingRange()
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norm = 0.5*Const.c/dr
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dcoeffs = []
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for ind, val in enumerate(coeffs):
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dcoeffs.append( val / (norm**ind))
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poly = Poly1D.Poly1D()
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poly.initPoly(order=len(coeffs)-1)
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poly.setMean( (rref - r0)/dr - 1.0)
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poly.setCoeffs(dcoeffs)
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pickName = os.path.join(slcname, 'data')
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with shelve.open(pickName) as db:
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db['frame'] = obj.frame
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db['doppler'] = poly
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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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inps = cmdLineParse()
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if inps.slcdir.endswith('/'):
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inps.slcdir = inps.slcdir[:-1]
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if inps.h5dir.endswith('/'):
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inps.h5dir = inps.h5dir[:-1]
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unpack(inps.h5dir, inps.slcdir)
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