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Heterodyne instrument introduced

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Lukas Klass 2020-06-30 11:29:05 +02:00
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docs/source/configuration/sensor.rst
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@ -224,3 +224,118 @@ Attributes:
| The number of pixels to be contained within the photometric aperture.
* | **val_unit:** str, *optional* = "pix"
| The unit of the number of pixels to be contained within the photometric aperture. This has to be ``pix``.
Heterodyne
----------
The heterodyne sensor type allows to model a generic heterodyne radio receiver which uses an local oscillator and an mixer to create spectral images. The heterodyne-component contains several parameters which are explained in the following. All parameters are defined according to the `Guide to GREAT <https://www.sofia.usra.edu/science/proposing-and-observing/observers-handbook-cycle-9/6-great/61-specifications#PerformanceGREAT>`_.
.. code-block:: xml
:linenos:
<sensor type="Heterodyne">
<aperture_efficiency val="0.55" val_unit=""/>
<main_beam_efficiency val="0.67" val_unit=""/>
<receiver_temp val="1050" val_unit="K"/>
<eta_fss val="0.97" val_unit=""/>
<lambda_line val="157.774" val_unit="um"/>
<kappa val="1" val_unit=""/>
<n_on val="10" val_unit=""/>
</sensor>
aperture_efficiency
^^^^^^^^^^^^^^^^^^^
The aperture efficiency of the instrument.
.. code-block:: xml
<aperture_efficiency val="0.55" val_unit=""/>
Attributes:
* | **val:** float
| The value of the aperture efficiency of the instrument.
* | **val_unit:** str, *optional* = ""
| The unit of the aperture efficiency of the instrument. This has to be emtpy (dimensionless).
main_beam_efficiency
^^^^^^^^^^^^^^^^^^^^
The main beam efficiency of the instrument.
.. code-block:: xml
<main_beam_efficiency val="0.67" val_unit=""/>
Attributes:
* | **val:** float
| The value of the main beam efficiency of the instrument.
* | **val_unit:** str, *optional* = ""
| The unit of the main beam efficiency of the instrument. This has to be emtpy (dimensionless).
receiver_temp
^^^^^^^^^^^^^
The receiver's noise temperature.
.. code-block:: xml
<receiver_temp val="1050" val_unit="K"/>
Attributes:
* | **val:** float
| The receiver's noise temperature.
* | **val_unit:** str, *optional* = "K"
| The unit of the receiver temperature. This has to be on of [``K``, ``Celsius``].
eta_fss
^^^^^^^
The forward scattering efficiency of the detector.
.. code-block:: xml
<eta_fss val="0.97" val_unit=""/>
Attributes:
* | **val:** float
| The forward scattering efficiency of the detector.
* | **val_unit:** str, *optional* = ""
| The unit of the forward scattering efficiency of the instrument. This has to be emtpy (dimensionless).
lambda_line
^^^^^^^^^^^
The wavelength of the observed line.
.. code-block:: xml
<lambda_line val="157.774" val_unit="um"/>
Attributes:
* | **val:** float
| The wavelength of the observed line.
* | **val_unit:** str, *optional* = "m"
| The unit of the observed line wavelength. This has to be on of [``nm``, ``um``, ``mm``, ``cm``, ``m``].
kappa
^^^^^
The instrument's backend degradation factor.
.. code-block:: xml
<kappa val="1" val_unit=""/>
Attributes:
* | **val:** float
| The instrument's backend degradation factor.
* | **val_unit:** str, *optional* = ""
| The unit of the backend degradation factor. This has to be emtpy (dimensionless).
n_on
^^^^
The number of on-source observations per off-source observation.
.. code-block:: xml
<n_on val="10" val_unit=""/>
Attributes:
* | **val:** float
| The number of on-source observations per off-source observation.
* | **val_unit:** str, *optional* = ""
| The unit of the number of on-source observations per off-source observation. This has to be emtpy (dimensionless).