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"""
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*** Generate SLC parameter and image files for SWOT level 1B KaRIn SLC data ***
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*** Copyright 2024, Gamma Remote Sensing, v1.2 30-Oct-2024 cm ***
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OPENMP: number of physical processors: 12
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OPENMP: default max. number of threads (program specific): 8
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OPENMP: current max. number of available threads: 12
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OPENMP: number of program threads: 8
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swath side: R
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cycle number: 36
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tile name: 001_237R
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transmit antenna: minus_y
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polarization: V
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nominal slant-range spacing: 0.749481
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slc range resolution: 0.749481
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slc along track resolution: 4.804711
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wavelength: 0.008386
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near range: 896963.319151
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slc first line index in tvp: 332
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slc last line index in tvp: 23225
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ellipsoid semi-major axis: 6378137.000000
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ellipsoid flattening: 0.003353
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kmsf_to_dop_roll: 0.007578
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kmsf_to_dop_pitch: 0.014095
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kmsf_to_dop_yaw: 0.059821
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num lines: 22894
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num pixels: 5270
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grdem num lines: 1472
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grdem num pixels: 2000
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grdem cross track spacing: 50.000000
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grdem min cross track: 0.000000
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reading grdem data... done
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median terrain height (relative to ellipsoid): 2117.450195
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mean pitch correction: 0.000000
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num tvps: 23562
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start date and time: 2025-07-20T12:31:00.575461
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resampling grdem...
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done
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range Doppler polynomial estimation:
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polynomial fit coefficients: a0: -3.0534e+03 a1: -4.1911e-03 a2: 1.4951e-06 a3: -4.3494e-10
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azimuth Doppler polynomial estimation:
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polynomial fit coefficients: a0: -3.0521e+03 a1: -5.1078e-01 a2: 0.0000e+00 a3: 0.0000e+00
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SAR position at center time x,y,z (m): 4908555.981 881350.584 5285333.886
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scene center latitude (deg.): 46.72925490 longitude (deg.): 10.70877829
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scene center earth radius (m): 6368961.807 incidence angle at scene center (deg.): 3.114228
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earth radius below sensor (m): 7266736.198 platform heading (deg.): 15.505152
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north swath velocity (m/s): 6213.9987
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east swath velocity (m/s): 1515.7386
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along track swath velocity (m/s): 6396.18976
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SLC azimuth pixel spacing (m): 3.10089220
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reading SLC data... done
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reading radiometric calibration data... done
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reading noise calibration data... done
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SLC file: SWOT_L1B_HR_SLC_036_001_237R_output_v0/20250720_R_plus_y.slc
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SLC parameter file: SWOT_L1B_HR_SLC_036_001_237R_output_v0/20250720_R_plus_y.slc.par
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SLC width: 5270 lines: 22894
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SAR position at center time x,y,z (m): 4908555.770 881340.712 5285335.716
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scene center latitude (deg.): 46.72927643 longitude (deg.): 10.70866787
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scene center earth radius (m): 6368961.799 incidence angle at scene center (deg.): 3.114230
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earth radius below sensor (m): 7266736.188 platform heading (deg.): 15.505071
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north swath velocity (m/s): 6214.0017
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east swath velocity (m/s): 1515.7304
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along track swath velocity (m/s): 6396.19073
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SLC azimuth pixel spacing (m): 3.10089267
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reading SLC data... done
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reading radiometric calibration data... done
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reading noise calibration data... done
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SLC file: SWOT_L1B_HR_SLC_036_001_237R_output_v0/20250720_R_minus_y.slc
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SLC parameter file: SWOT_L1B_HR_SLC_036_001_237R_output_v0/20250720_R_minus_y.slc.par
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SLC width: 5270 lines: 22894
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DEM file: SWOT_L1B_HR_SLC_036_001_237R_output_v0/20250720.sch.dem
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DEM parameter file: SWOT_L1B_HR_SLC_036_001_237R_output_v0/20250720.sch.dem_par
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DEM width: 2000 lines: 1472
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user time (s): 22.370
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system time (s): 4.290
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elapsed time (s): 21.960
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[par_SWOT_SLC] wrote SLC legs + SCH DEM
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*** Calculate state vectors using orbit propagation and interpolation ***
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*** Copyright 2022, Gamma Remote Sensing, v2.0 1-Feb-2022 clw/awi/cm ***
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ISP image parameter file: SWOT_L1B_HR_SLC_036_001_237R_output_v0/20250720_R_minus_y.slc.par
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ISP image title: SWOT L1B_HR_SLC 036_001_237R TX: minus_y RX: minus_y
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starting date of the image data: year: 2025 month: 07 day: 20 julian day: 2460877
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starting time (UTC) of image data (seconds of day): 45060.5755
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starting time for input state vectors (s): 45060.5000
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interval between input state vectors (s): 0.1000
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number of input state vectors: 114
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extra time at start and end of output state vectors (s): 150.0000
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interval between output state vectors (s): 0.5000
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starting time for first output state vector (s): 44910.5755
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number of output state vectors: 624
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time of last output state vector: 45222.0755
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MODE: interp. between existing state vectors; propagate outside
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user time (s): 0.090
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system time (s): 0.000
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elapsed time (s): 0.090
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*** Calculate state vectors using orbit propagation and interpolation ***
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*** Copyright 2022, Gamma Remote Sensing, v2.0 1-Feb-2022 clw/awi/cm ***
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ISP image parameter file: SWOT_L1B_HR_SLC_036_001_237R_output_v0/20250720_R_plus_y.slc.par
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ISP image title: SWOT L1B_HR_SLC 036_001_237R TX: minus_y RX: plus_y
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starting date of the image data: year: 2025 month: 07 day: 20 julian day: 2460877
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starting time (UTC) of image data (seconds of day): 45060.5755
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starting time for input state vectors (s): 45060.5000
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interval between input state vectors (s): 0.1000
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number of input state vectors: 114
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extra time at start and end of output state vectors (s): 150.0000
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interval between output state vectors (s): 0.5000
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starting time for first output state vector (s): 44910.5755
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number of output state vectors: 624
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time of last output state vector: 45222.0755
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MODE: interp. between existing state vectors; propagate outside
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user time (s): 0.090
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system time (s): 0.000
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elapsed time (s): 0.100
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[ORB_prop_SLC] interval=0.5s extra=150s mode=2
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ERROR p_interp(): time outside of range: 45312.07576 min: 44820.57546 max: 45312.07546
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*** Change geometry from Doppler centroid to zero-Doppler (deskew) or vice-versa ***
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*** Copyright 2024, Gamma Remote Sensing, v1.6 17-Oct-2024 cm/clw/uw ***
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OPENMP: number of physical processors: 12
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OPENMP: default max. number of threads (program specific): 8
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OPENMP: current max. number of available threads: 12
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OPENMP: number of program threads: 8
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changing geometry from Doppler centroid to zero-Doppler (deskew)
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interpolation method: Lanczos, order 5, steps: 16000
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data are deramped before interpolation and reramped afterwards
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phase related to range shift is corrected
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ERROR p_interp(): time outside of range: 45312.07576 min: 44820.57546 max: 45312.07546
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*** Change geometry from Doppler centroid to zero-Doppler (deskew) or vice-versa ***
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*** Copyright 2024, Gamma Remote Sensing, v1.6 17-Oct-2024 cm/clw/uw ***
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OPENMP: number of physical processors: 12
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OPENMP: default max. number of threads (program specific): 8
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OPENMP: current max. number of available threads: 12
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OPENMP: number of program threads: 8
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changing geometry from Doppler centroid to zero-Doppler (deskew)
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interpolation method: Lanczos, order 5, steps: 16000
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data are deramped before interpolation and reramped afterwards
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phase related to range shift is corrected
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[SLC_deskew] order=5 Lanczos, deramp=1, ph_corr=1
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"""
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