73 lines
3.0 KiB
Python
73 lines
3.0 KiB
Python
#!/usr/bin/env python3
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# Copyright 2010 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: Walter Szeliga
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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import math
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from isce import logging
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from iscesys.Compatibility import Compatibility
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Compatibility.checkPythonVersion()
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from isceobj.Location.Peg import Peg
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from iscesys.Component.FactoryInit import FactoryInit
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class CalculatePegPoint(FactoryInit):
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def calculatePegPoint(self):
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self.logger.info("Parsing Raw Data")
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self.sensorObj.parse()
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frame = self.sensorObj.getFrame()
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# First, get the orbit nadir location at mid-swath and the end of the scene
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orbit = self.sensorObj.getFrame().getOrbit()
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midxyz = orbit.interpolateOrbit(frame.getSensingMid())
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endxyz = orbit.interpolateOrbit(frame.getSensingStop())
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# Next, calculate the satellite heading from the mid-point to the end of the scene
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ellipsoid = frame.getInstrument().getPlatform().getPlanet().get_elp()
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midllh = ellipsoid.xyz_to_llh(midxyz.getPosition())
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endllh = ellipsoid.xyz_to_llh(endxyz.getPosition())
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heading = ellipsoid.geo_hdg(midllh,endllh)
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# Then create a peg point from this data
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peg = Peg(latitude=midllh[0],longitude=midllh[1],heading=heading,ellipsoid=ellipsoid)
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self.logger.info("Peg Point:\n%s" % peg)
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def __init__(self,arglist):
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FactoryInit.__init__(self)
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self.initFactory(arglist)
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self.sensorObj = self.getComponent('Sensor')
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self.logger = logging.getLogger('isce.calculatePegPoint')
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if __name__ == "__main__":
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import sys
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if (len(sys.argv) < 2):
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print("Usage:%s <xml-parameter file>" % sys.argv[0])
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sys.exit(1)
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runObj = CalculatePegPoint(sys.argv[1:])
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runObj.calculatePegPoint()
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