isofit.configs.sections.instrument_config

class InstrumentUnknowns(sub_configdic=None)

Bases: BaseConfigSection

Instrument Unknowns configuration.

class InstrumentConfig(sub_configdic=None)

Bases: BaseConfigSection

Instrument configuration.

integrations

Number of integrations comprising the measurement. Noise diminishes with the square root of this number. Applicable in concert with parametric_noise_file or pushbroom_noise_file

fast_resample

Approximates a complete resampling by a convolution with a uniform FWHM.

Type:

bool

SNR

We have several ways to define the instrument noise. The simplest model is based on a single uniform SNR number that is signal-independnet and applied uniformly to all wavelengths

Type:

float

parametric_noise_file

We have several ways to define the instrument noise. The second option is a parametric, signal- and wavelength- dependent noise function. This is given by a four-column ASCII Text file. Rows represent, respectively, the reference wavelength, and coefficients A, B, and C that define the noise-equivalent radiance via NeDL = A * sqrt(B+L) + C For the actual radiance L.

Type:

str

pushbroom_noise_file

We have several ways to define the instrument noise. The third option is a full pushbroom noise model that specifies noise columns and covariances independently for each cross-track location via an ENVI-format binary data file.

Type:

str

nedt_noise_file

We have several ways to define the instrument noise. The last is NEDT noise

Type:

str