M3 PDS3 NaifSpice Driver (#608) (0ba7b24e) · Commits · aflab / astrogeology / Ale

ale/drivers/chandrayaan_drivers.py

+203 −0

Original line number	Diff line number	Diff line
		@@ -3,8 +3,211 @@ import spiceypy as spice
		from ale.base import Driver
		from ale.base.data_naif import NaifSpice
		from ale.base.label_isis import IsisLabel
		from ale.base.label_pds3 import Pds3Label
		from ale.base.type_distortion import NoDistortion, ChandrayaanMrffrDistortion
		from ale.base.type_sensor import LineScanner, Radar
		from csv import reader


		class Chandrayaan1M3Pds3NaifSpiceDriver(LineScanner, Pds3Label, NaifSpice, NoDistortion, Driver):

		@property
		def ikid(self):
		"""
		Returns the Naif ID code for the Moon Mineralogy Mapper

		Returns
		-------
		: int
		Naif ID used to for identifying the instrument in Spice kernels
		"""
		return -86520

		@property
		def sensor_frame_id(self):
		"""
		Returns the Naif ID code for the sensor reference frame

		Returns
		-------
		: int
		Naif ID code for the sensor frame
		"""
		return spice.bods2c("CH1")


		@property
		def spacecraft_name(self):
		"""
		Returns the name of the spacecraft

		Returns
		-------
		: str
		Full name of the spacecraft
		"""
		return self.label['MISSION_ID']


		@property
		def platform_name(self):
		"""
		Returns the name of the platform. For M3, this is reflected by the mission name.

		Returns
		-------
		: str
		Name of the platform that the sensor is on
		"""
		return self.label['MISSION_NAME']


		@property
		def image_lines(self):
		"""
		Return the number of lines in the image.

		Returns
		-------
		: int
		Number of lines in the image
		"""
		return self.label.get('RDN_FILE').get('RDN_IMAGE').get('LINES')


		@property
		def image_samples(self):
		"""
		Return the number of samples in the image.

		Returns
		-------
		: int
		Number of samples in the image
		"""
		return self.label.get('RDN_FILE').get('RDN_IMAGE').get('LINE_SAMPLES')


		def read_timing_data(self):
		"""
		Read data from the timing file.

		Returns
		-------
		None
		"""
		if hasattr(self, '_utc_times'):
		return(self._lines, self._utc_times)

		# Read timing file as structured text. Reads each row as a list.
		with open(self.utc_time_table, 'r') as time_file:
		lists = list(reader(time_file, skipinitialspace=True, delimiter=" "))

		# Transpose such that each column is a list. Unpack and ignore anything that's not lines and times.
		self._lines, self._utc_times, _ = zip(lists)


		@property
		def ephemeris_start_time(self):
		"""
		Returns
		-------
		: double
		The start time of the image in ephemeris seconds past the J2000 epoch.
		"""
		if not hasattr(self, '_ephemeris_start_time'):
		et = spice.utc2et(self.utc_times[0])
		et -= (.5 * self.line_exposure_duration)
		clock_time = spice.sce2s(self.sensor_frame_id, et)
		self._ephemeris_start_time = spice.scs2e(self.sensor_frame_id, clock_time)
		return self._ephemeris_start_time


		@property
		def ephemeris_stop_time(self):
		"""
		Returns
		-------
		: double
		The stop time of the image in ephemeris seconds past the J2000 epoch.
		"""
		return self.ephemeris_start_time + (self.image_lines * self.exposure_duration)


		@property
		def utc_time_table(self):
		"""
		Returns
		-------
		: str
		The name of the file containing the line timing information
		"""
		if not hasattr(self, '_utc_time_table'):
		self._utc_time_table = self.label['UTC_FILE']['^UTC_TIME_TABLE']
		return self._utc_time_table


		@property
		def utc_times(self):
		""" UTC time of the center of each line
		"""
		if not hasattr(self, '_utc_times'):
		self.read_timing_data()

		if self._utc_times[0] > self._utc_times[-1]:
		return list(reversed(self._utc_times))
		return self._utc_times


		@property
		def sampling_factor(self):
		"""
		Returns the summing factor from the PDS3 label. For example a return value of 2
		indicates that 2 lines and 2 samples (4 pixels) were summed and divided by 4
		to produce the output pixel value.

		Information found in M3 SIS

		Returns
		-------
		: int
		Number of samples and lines combined from the original data to produce a single pixel in this image
		"""
		instrument_mode = self.label['INSTRUMENT_MODE_ID']
		if instrument_mode.upper() == "GLOBAL":
		return 2
		else:
		return 1


		@property
		def line_exposure_duration(self):
		"""
		Line exposure duration returns the time between the exposures for
		subsequent lines.

		Logic found in ISIS translation file "Chandrayaan1M3Instrument.trn"

		Returns
		-------
		: float
		Returns the line exposure duration in seconds from the PDS3 label.
		"""
		instrument_mode = self.label['INSTRUMENT_MODE_ID']
		if instrument_mode.upper() == "GLOBAL":
		return .10176
		elif instrument_mode.upper() == "TARGET":
		return .05088

		@property
		def sensor_model_version(self):
		"""
		Returns
		-------
		: int
		version of the sensor model
		"""
		return 1

		class Chandrayaan1M3IsisLabelNaifSpiceDriver(LineScanner, IsisLabel, NaifSpice, NoDistortion, Driver):

tests/pytests/data/M3T20090630T083407_V03_RDN/M3T20090630T083407_V03_L1B_cropped_pds3.lbl

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+178 −0

Original line number	Diff line number	Diff line
		PDS_VERSION_ID = PDS3
		LABEL_REVISION_NOTE = "2009-01-26, S. Lundeen, 2010-12-07, S. Lundeen, 2011-09-20, S. Lundeen"
		DATA_SET_ID = CH1-ORB-L-M3-4-L1B-RADIANCE-V3.0
		PRODUCT_ID = M3T20090630T083407_V03_RDN
		RECORD_TYPE = UNDEFINED
		MISSION_ID = CH1
		MISSION_NAME = CHANDRAYAAN-1
		INSTRUMENT_HOST_ID = CH1-ORB
		INSTRUMENT_HOST_NAME = "CHANDRAYAAN-1 ORBITER"
		INSTRUMENT_NAME = "MOON MINERALOGY MAPPER"
		INSTRUMENT_ID = M3
		TARGET_NAME = MOON
		TARGET_TYPE = SATELLITE
		MISSION_PHASE_NAME = "PRIMARY MISSION"
		PRODUCT_TYPE = CALIBRATED_IMAGE
		PRODUCT_CREATION_TIME = 2009-05-10T18:01:10
		START_TIME = 2009-06-30T08:34:07
		STOP_TIME = 2009-06-30T08:34:36
		SPACECRAFT_CLOCK_START_COUNT = 12/1759028.348
		SPACECRAFT_CLOCK_STOP_COUNT = 12/1759056.993
		ORBIT_NUMBER = 2804
		PRODUCT_VERSION_TYPE = ACTUAL
		PRODUCT_VERSION_ID = "3.0"
		SOURCE_PRODUCT_ID = M3T20090630T083407_V01_L0.IMG
		PRODUCER_INSTITUTION_NAME = "JET PROPULSION LABORATORY"
		SOFTWARE_NAME = m3t_l1b_v07.exe
		SOFTWARE_VERSION_ID = "07"
		DESCRIPTION = "M3 Level 1B data product which contains pixel located, radiometrically-calibrated data."
		SOLAR_DISTANCE = 1.01711556761 <AU>
		INSTRUMENT_MODE_ID = TARGET
		DETECTOR_TEMPERATURE = 161.99
		CH1:SWATH_WIDTH = 608 <pixel>
		CH1:SWATH_LENGTH = 564 <pixel>
		CH1:SPACECRAFT_YAW_DIRECTION = FORWARD
		CH1:ORBIT_LIMB_DIRECTION = ASCENDING
		SPACECRAFT_ORIENTATION = (N/A, N/A, N/A)
		CH1:INITIAL_SC_ORIENTATION = (0.233580805487, 2.281265294933, 4.003902254047)
		CH1:SC_ORIENTATION_EPOCH_TDB_TIME = 299617824.351
		CH1:SC_ORIENTATION_RATE = (N/A, N/A, N/A)
		CH1:SC_ROTATION_AXIS_VECTOR = (0.049715054267, -0.997329135941, 0.053507083471)
		CH1:SC_ROTATION_RATE = 0.046843426581
		^DESCRIPTION = L1B_NAV_DESC.ASC
		CH1:SPECTRAL_CALIBRATION_FILE_NAME = M3T20070912_RDN_SPC.TAB
		CH1:RAD_GAIN_FACTOR_FILE_NAME = M3T20070912_RDN_GAIN.TAB
		Object = RDN_FILE
		^RDN_IMAGE = M3T20090630T083407_V03_RDN_cropped.IMG
		RECORD_TYPE = FIXED_LENGTH
		RECORD_BYTES = 7296
		FILE_RECORDS = 5
		Object = RDN_IMAGE
		LINES = 5
		LINE_SAMPLES = 608
		SAMPLE_TYPE = PC_REAL
		SAMPLE_BITS = 32
		UNIT = "W/(m^2 um sr)"
		BANDS = 3
		BAND_STORAGE_TYPE = LINE_INTERLEAVED
		LINE_DISPLAY_DIRECTION = DOWN
		SAMPLE_DISPLAY_DIRECTION = RIGHT
		End_Object
		End_Object
		Object = RDN_HDR_FILE
		^RDN_ENVI_HEADER = M3T20090630T083407_V03_RDN.HDR
		RECORD_TYPE = VARIABLE_LENGTH
		FILE_RECORDS = 803
		Object = RDN_ENVI_HEADER
		INTERCHANGE_FORMAT = ASCII
		BYTES = 25037
		HEADER_TYPE = ENVI
		DESCRIPTION = "Header file for compatibility with the commercial software package ENVI."
		End_Object
		End_Object
		Object = LOC_FILE
		^LOC_IMAGE = M3T20090630T083407_V03_LOC_cropped.IMG
		RECORD_TYPE = FIXED_LENGTH
		RECORD_BYTES = 14592
		FILE_RECORDS = 5
		Object = LOC_IMAGE
		LINES = 5
		LINE_SAMPLES = 608
		SAMPLE_TYPE = PC_REAL
		SAMPLE_BITS = 64
		BANDS = 3
		BAND_STORAGE_TYPE = LINE_INTERLEAVED
		BAND_NAME = (Longitude, Latitude, Radius)
		LINE_DISPLAY_DIRECTION = DOWN
		SAMPLE_DISPLAY_DIRECTION = RIGHT
		End_Object
		End_Object
		Object = LOC_HDR_FILE
		^LOC_ENVI_HEADER = M3T20090630T083407_V03_LOC.HDR
		RECORD_TYPE = VARIABLE_LENGTH
		FILE_RECORDS = 16
		Object = LOC_ENVI_HEADER
		INTERCHANGE_FORMAT = ASCII
		BYTES = 371
		HEADER_TYPE = ENVI
		DESCRIPTION = "Header file for compatibility with the commercial software package ENVI."
		End_Object
		End_Object
		Object = OBS_FILE
		^OBS_IMAGE = M3T20090630T083407_V03_OBS_cropped.IMG
		RECORD_TYPE = FIXED_LENGTH
		RECORD_BYTES = 24320
		FILE_RECORDS = 5
		Object = OBS_IMAGE
		LINES = 5
		LINE_SAMPLES = 608
		SAMPLE_TYPE = PC_REAL
		SAMPLE_BITS = 32
		BANDS = 10
		BAND_STORAGE_TYPE = LINE_INTERLEAVED
		BAND_NAME = ("To-Sun AZM", "To-Sun Zenith", "To-Inst AZM", "To-Inst Zenith", Phase-angle, "To-Sun Path Length", "To-Inst Path Length", "Facet Slope", "Facet Aspect", "Facet Cos i")
		LINE_DISPLAY_DIRECTION = DOWN
		SAMPLE_DISPLAY_DIRECTION = RIGHT
		End_Object
		End_Object
		Object = OBS_HDR_FILE
		^OBS_ENVI_HEADER = M3T20090630T083407_V03_OBS.HDR
		RECORD_TYPE = VARIABLE_LENGTH
		FILE_RECORDS = 21
		Object = OBS_ENVI_HEADER
		INTERCHANGE_FORMAT = ASCII
		BYTES = 706
		HEADER_TYPE = ENVI
		DESCRIPTION = "Header file for compatibility with the commercial software package ENVI."
		End_Object
		End_Object
		Object = UTC_FILE
		^UTC_TIME_TABLE = M3T20090630T083407_V03_TIM_cropped.TAB
		RECORD_TYPE = FIXED_LENGTH
		RECORD_BYTES = 57
		FILE_RECORDS = 5
		Object = UTC_TIME_TABLE
		NAME = "UTC OBSERVATION TIMING DATA"
		INTERCHANGE_FORMAT = ASCII
		ROWS = 5
		COLUMNS = 4
		ROW_BYTES = 57
		Object = COLUMN
		COLUMN_NUMBER = 1
		NAME = "LINE NUMBER"
		DATA_TYPE = ASCII_INTEGER
		START_BYTE = 1
		BYTES = 6
		FORMAT = I6
		DESCRIPTION = "Record number for each RDN image line"
		End_Object
		Object = COLUMN
		COLUMN_NUMBER = 2
		NAME = UTC_TIME
		DATA_TYPE = TIME
		START_BYTE = 8
		BYTES = 26
		FORMAT = A26
		DESCRIPTION = "UTC Time for the middle of the integration period for each RDN image line expressed as YYYY-MM-DDTHH:MM:SS.SSSSSS"
		End_Object
		Object = COLUMN
		COLUMN_NUMBER = 3
		NAME = YEAR
		DATA_TYPE = CHARACTER
		START_BYTE = 35
		BYTES = 4
		FORMAT = I4
		DESCRIPTION = "Decimal Day of Year (DDOY) Year reference extracted from the earliest time of each RDN image line"
		End_Object
		Object = COLUMN
		COLUMN_NUMBER = 4
		NAME = DDOY
		DATA_TYPE = DATE
		START_BYTE = 40
		BYTES = 16
		FORMAT = F16.12
		DESCRIPTION = "Decimal Day of Year represented as the number of days elapsed since 00:00 UTC of January 1 of the year associated with the time stamp of the first line of the RDN image file. DDOY is expressed using seventeen characters where 1-3 = three characters that contain the integer number of days; 4 = a decimal point; 5-16 = twelve charact- ers after the decimal for the fractional part of the day of year value."
		End_Object
		End_Object
		End_Object
		End
		No newline at end of file

tests/pytests/data/M3T20090630T083407_V03_RDN/M3T20090630T083407_V03_TIM_cropped.TAB

0 → 100644

+5 −0

Original line number	Diff line number	Diff line
		1 2009-06-30T08:34:35.653371 2009 180.357357101487
		2 2009-06-30T08:34:35.602491 2009 180.357356512598
		3 2009-06-30T08:34:35.551611 2009 180.357355923710
		4 2009-06-30T08:34:35.500731 2009 180.357355334822
		5 2009-06-30T08:34:35.449851 2009 180.357354745933

tests/pytests/data/isds/chandrayaan_m3_nadir_isd.json

0 → 100644

+418 −0

Original line number	Diff line number	Diff line
		{
		"isis_camera_version": 1,
		"image_lines": 5,
		"image_samples": 608,
		"name_platform": "CHANDRAYAAN-1",
		"name_sensor": "MOON MINERALOGY MAPPER",
		"reference_height": {
		"maxheight": 1000,
		"minheight": -1000,
		"unit": "m"
		},
		"name_model": "USGS_ASTRO_LINE_SCANNER_SENSOR_MODEL",
		"interpolation_method": "lagrange",
		"line_scan_rate": [
		[
		0.5,
		-0.12720000743865967,
		0.05088
		]
		],
		"starting_ephemeris_time": 299622941.60814995,
		"center_ephemeris_time": 299622941.73534995,
		"radii": {
		"semimajor": 1737.4,
		"semiminor": 1737.4,
		"unit": "km"
		},
		"body_rotation": {
		"time_dependent_frames": [
		31006,
		1
		],
		"ck_table_start_time": 299622941.60814995,
		"ck_table_end_time": 299622941.86254996,
		"ck_table_original_size": 2,
		"ephemeris_times": [
		299622941.60814995,
		299622941.86254996
		],
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		[
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		0.196465551731104,
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		0.10551657226330902
		]
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		"angular_velocities": [
		[
		6.124937754497467e-08,
		-1.0239801705539717e-06,
		2.4560118095097265e-06
		],
		[
		6.12493776573662e-08,
		-1.0239801709466094e-06,
		2.456011809503279e-06
		]
		],
		"constant_frames": [
		31001,
		31007,
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		],
		"constant_rotation": [
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		-0.00038086911909607826,
		1.5798557868269087e-06,
		0.9999999274681067
		],
		"reference_frame": 1
		},
		"instrument_pointing": {
		"time_dependent_frames": [
		-86,
		1
		],
		"ck_table_start_time": 299622941.60814995,
		"ck_table_end_time": 299622941.86254996,
		"ck_table_original_size": 6,
		"ephemeris_times": [
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		299622941.65902996,
		299622941.70991,
		299622941.76078993,
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		299622941.86254996
		],
		"quaternions": [
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		[
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		[
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		[
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		[
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		"angular_velocities": null,
		"reference_frame": 1,
		"constant_frames": [
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		"constant_rotation": [
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		},
		"naif_keywords": {
		"BODY301_RADII": [
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		1737.4,
		1737.4
		],
		"BODY_FRAME_CODE": 31001,
		"BODY_CODE": 301,
		"INS-86520_ITRANSS": [
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		],
		"INS-86520_BORESIGHT_SAMPLE": 304.5,
		"TKFRAME_-86520_RELATIVE": "CH1_SPACECRAFT",
		"INS-86520_OD_K": [
		0.000379921103637315,
		0.000213226448051461,
		-4.0186287875859195e-08
		],
		"FRAME_-86520_CLASS": 4.0,
		"INS-86520_DECENTER": [
		0.004047,
		-5e-06
		],
		"INS-86520_CK_REFERENCE_ID": 1.0,
		"INS-86520_PLATFORM_ID": -86000.0,
		"TKFRAME_-86520_UNITS": "DEGREES",
		"INS-86520_LT_SURFACE_CORRECT": "TRUE",
		"INS-86520_SWAP_OBSERVER_TARGET": "TRUE",
		"TKFRAME_-86520_ANGLES": [
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		0.0,
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		"FRAME_-86520_CENTER": -86.0,
		"INS-86520_LIGHTTIME_CORRECTION": "NONE",
		"INS-86520_PIXEL_PITCH": 0.027,
		"FRAME_-86520_NAME": "CHANDRAYAAN-1_M3",
		"TKFRAME_-86520_AXES": [
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		"TKFRAME_-86520_SPEC": "ANGLES",
		"INS-86520_TRANSX": [
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		"FRAME_-86520_CLASS_ID": -86520.0,
		"INS-86520_CK_FRAME_ID": -86000.0,
		"INS-86520_BORESIGHT_LINE": 0.0,
		"INS-86520_FOCAL_LENGTH": 39.63,
		"INS-86520_PP": [
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		],
		"INS-86520_ITRANSL": [
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		],
		"BODY301_POLE_RA": [
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		"BODY301_NUT_PREC_PM": [
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		"BODY301_NUT_PREC_RA": [
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		"BODY301_LONG_AXIS": 0.0,
		"BODY301_NUT_PREC_DEC": [
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		"BODY301_POLE_DEC": [
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		"BODY301_PM": [
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		No newline at end of file

tests/pytests/test_chandrayaan_driver.py

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