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sensor: add Fucheng-1 parameters #1451

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Update sensor.py
Arctic-Ambrun Dec 28, 2025
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Arctic-Ambrun Dec 28, 2025
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Update sensor.py
Arctic-Ambrun Dec 28, 2025
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Arctic-Ambrun Dec 30, 2025
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Update sensor.py
yunjunz Feb 25, 2026
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yunjunz Feb 25, 2026
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Update sensor.py
yunjunz Feb 25, 2026
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25 changes: 24 additions & 1 deletion src/mintpy/objects/sensor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,7 +30,8 @@
'rcm' : ['rcm', 'rsatc', 'radarsat-constellation', 'radarsat-constellation-mission'],
'sen' : ['sen', 's1', 's1a', 's1b', 'sent1', 'sentinel1', 'sentinel1a', 'sentinel1b'],
'tsx' : ['tsx', 'terra', 'terrasar', 'terrasarx', 'tdx', 'tandemx'],
'uav' : ['uav', 'uavsar'],
'uav' : ['uav', 'uavsar'],,
'fc1' : ['fc1','fucheng', 'FuCheng-1', 'FuCheng'],
}

# duplicated in mintpy.cli.prep_gamma
Expand Down Expand Up @@ -478,6 +479,27 @@ def get_unavco_mission_name(meta_dict):
'noise_equivalent_sigma_zero': -22, # dB
}

# Fucheng-1
# reference:
# 1. Table1 in <High Resolution Sparse Imaging and Doppler Parameter Estimation of Fucheng‑1 SAR Satellite> Cai et al. (2025)
# 2. manual corrected parameters against par file from GAMMA
# 3. table from https://cn.spacety.com/SARDevelopment
FC1 = {
'altitude' : 505e3, # m
'orbit_inclination' : 97.3, # deg
'repeat_cycle' : 11, # day
# sar / antenna
'carrier_frequency' : 5.4000001e+09, # Hz
'antenna_length' : 4.56, # m
'antenna_width' : 0.8, # m
'chirp_bandwidth' : 1.0e+08, # Hz
'sampling_frequency' : 1.20e+08, # Hz
'azimuth_pixel_size' : 13.96, # m, this is the ground azimuth pixel spacing, NOT on orbits!
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@yunjunz yunjunz Feb 25, 2026

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This parameter is much larger than antenna_length/2. Could you double-check the value for the SLC file?

'range_pixel_size' : 1.24, # m
# 'ground_range_pixel_size' : ?, # m
}



##-------------------- S-band --------------------##

Expand Down Expand Up @@ -786,6 +808,7 @@ def get_unavco_mission_name(meta_dict):
'rsat2' : RSAT2,
'rcm' : RCM,
'gf3' : GF3,
'fc1' : FC1,
# S-band
'hj1c' : HJ1C,
# L-band
Expand Down