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gb_factory moved to AHotOpticalComponent

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This commit is contained in:
Lukas Klass 2020-04-15 15:39:01 +02:00
parent 92fa74d7f2
commit fa602c312d
2 changed files with 38 additions and 27 deletions
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44
esbo_etc/classes/optical_component/AHotOpticalComponent.py
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@ -3,7 +3,7 @@ from esbo_etc.classes.ITransmissive import ITransmissive
from esbo_etc.classes.SpectralQty import SpectralQty
from abc import abstractmethod
import astropy.units as u
from esbo_etc.lib.helpers import gb_factory
from astropy.modeling.models import BlackBody
from typing import Union, Callable
@ -12,8 +12,9 @@ class AHotOpticalComponent(AOpticalComponent):
Abstract super class for an optical component with thermal emission
"""
@abstractmethod
@u.quantity_input(wl_bins='length', temp=[u.Kelvin, u.Celsius])
def __init__(self, parent: ITransmissive, emissivity: SpectralQty, temp: u.Quantity):
@u.quantity_input(wl_bins='length', temp=[u.Kelvin, u.Celsius], obstruction_temp=[u.Kelvin, u.Celsius])
def __init__(self, parent: ITransmissive, emissivity: SpectralQty, temp: u.Quantity, obstruction: float = 0,
obstructor_temp: u.Quantity = 0 * u.K, obstructor_emissivity: float = 1):
"""
Initialize a new optical component with thermal emission
@ -25,16 +26,26 @@ class AHotOpticalComponent(AOpticalComponent):
The spectral emissivity coefficient for the optical surface.
temp: Quantity in Kelvin / Celsius
Temperature of the optical component
obstruction : float
The additional obstruction factor of the optical component. 0 means the component is not obstructed, 1
denotes a completely obstructed component with therefore no incoming flux. It is important to note, that
the obstruction factor reflects the obstruction of the optical component additionally to the obstruction
factors of the prior elements in the beam.
obstructor_temp : Quantity in Kelvin / Celsius
Temperature of the obstructing component.
obstructor_emissivity : float
Emissivity of the obstructing component.
"""
# Initialize super class
super().__init__(parent)
super().__init__(parent, obstruction=obstruction, obstructor_temp=obstructor_temp,
obstructor_emissivity=obstructor_emissivity)
if temp > 0 * u.K:
# Create noise from black body model
if isinstance(emissivity, SpectralQty):
bb = gb_factory(temp)
bb = self._gb_factory(temp)
self._noise = SpectralQty(emissivity.wl, bb(emissivity.wl)) * emissivity
else:
bb = gb_factory(temp, emissivity)
bb = self._gb_factory(temp, emissivity)
self._noise = bb
else:
self._noise = 0
@ -49,3 +60,24 @@ class AHotOpticalComponent(AOpticalComponent):
The noise created by the optical component
"""
return self._noise
@staticmethod
@u.quantity_input(temp=[u.Kelvin, u.Celsius])
def _gb_factory(temp: u.Quantity, em: Union[int, float] = 1):
"""
Factory for a grey body lambda-function.
Parameters
----------
temp : Quantity in Kelvin / Celsius
The temperature fo the grey body.
em : Union[int, float]
Emissivity of the the grey body
Returns
-------
bb : Callable
The lambda function for the grey body.
"""
bb = BlackBody(temperature=temp, scale=em * u.W / (u.m ** 2 * u.nm * u.sr))
return lambda wl: bb(wl)

21
esbo_etc/lib/helpers.py
View File

@ -27,27 +27,6 @@ def error(msg: str, exit_: bool = True):
sys.exit(1)
@u.quantity_input(temp=[u.Kelvin, u.Celsius])
def gb_factory(temp: u.Quantity, em: Union[int, float] = 1):
"""
Factory for a grey body lambda-function.
Parameters
----------
temp : Quantity in Kelvin / Celsius
The temperature fo the grey body.
em : Union[int, float]
Emissivity of the the grey body
Returns
-------
bb : Callable
The lambda function for the grey body.
"""
bb = BlackBody(temperature=temp * u.K, scale=em * u.W / (u.m ** 2 * u.nm * u.sr))
return lambda wl: bb(wl)
def isLambda(v: object):
"""
Check if a object is of type lambda