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Redid the ground sampling distance equation #121

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Redid the ground sampling distance equation #121

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853293e
updated sensor-lim. spatial res based on new eqn
jenniferzzhang Feb 21, 2023
d5d8636
Fixed formatting
jenniferzzhang Mar 3, 2023
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25 changes: 19 additions & 6 deletions architect/systems/optical/spectrometers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -206,19 +206,31 @@ def get_iFOV(self):

return iFOV

def get_sensor_spatial_resolution(self, target_distance):
def get_sensor_spatial_resolution(self, target_distance, skew_angle):
"""Get the sensor-limited spatial resolution.

Ref: https://www.notion.so/utat-ss/Sensor-Limited-Spectral-Resolution-5071f076997f4b59851f73127822fb23
Ref: https://www.notion.so/utat-ss/Sensor-Limited-Spatial-Resolution-e009528833ec4aebba532476aab15bef

"""
assert self.sensor is not None, "A sensor component must be specified."
assert self.foreoptic is not None, "A foreoptic component must be specified."

spatial_resolution = (
target_distance
* self.sensor.get_pitch()
/ self.foreoptic.get_focal_length()
(
target_distance
* self.sensor.get_pitch()
/ self.foreoptic.get_focal_length()
)
* np.power(
np.cos(np.arctan((19 * unit.mm) / (self.foreoptic.focal_length))), 2
)
/ np.power(
np.cos(
np.arctan((19 * unit.mm) / (self.foreoptic.focal_length))
+ skew_angle
),
2,
)
)

return spatial_resolution
Expand Down Expand Up @@ -268,7 +280,8 @@ def get_spatial_resolution(self, wavelength, target_distance, skew_angle=0):
spatial_resolution = self.spatial_resolution
else:
sensor_spatial_resolution = self.get_sensor_spatial_resolution(
target_distance=target_distance
target_distance=target_distance,
skew_angle=skew_angle,
)

optical_spatial_resolution = self.get_optical_spatial_resolution(
Expand Down
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