@article{fdi:010084257,
  title = {{A} simulation-based error budget of the {TES} method for the design of the spectral configuration of the micro-bolometer-based {MISTIGRI} thermal infrared sensor},
  author = {{J}acob, {F}r{\'e}d{\'e}ric and {V}idal, {T}. {H}. {G}. and {L}esaignoux, {A}. and {O}lioso, {A}. and {W}eiss, {M}. and {N}erry, {F}. and {J}acquemoud, {S}. and {G}amet, {P}. and {C}aillault, {K}. and {L}abarre, {L}. and {F}rench, {A}. and {S}chmugge, {T}. and {B}riottet, {X}. and {L}agouarde, {J}. {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n preparation of the micro-bolometer-based {MI}cro {S}atellite for {T}hermal {I}nfrared {GR}ound surface {I}maging ({MISTIGRI}) mission, we study the error budget of the {T}emperature-{E}missivity {S}eparation ({TES}) method using several spectral configurations that differ in channel numbers, locations, and widths. {T}he error budget quantifies the contribution of 1) the {TES} underlying assumption about emissivity spectral contrast, 2) the errors on atmospheric corrections, and 3) the instrumental noise. {W}hen dealing with atmospheric corrections, we consider errors in atmospheric temperature, water vapor content, and concentrations of {CO}2 and {O}-3. {T}o that end, we design an end-to-end simulator of {MISTIGRI} measurements in order to simulate the radiative and biophysical quantities involved in the data processing. {W}e conduct numerous simulations over a wide range of realistic setups that include cavity effect, i.e., radiance trapping within vegetation canopy. {I}n the case of micro-bolometer-based sensing, the current study highlights that atmospheric and instrumental noises have similar impacts on the {TES} retrievals, with resulting errors twice as large as those due to the {TES} intrinsic assumption about spectral contrast, where the latter contributes to the {TES} error budget within the [0.005-0.009] interval for emissivity, and within the [0.3-0.4 {K}] interval for land surface temperature ({LST}). {A}lso, we show that retrieval performance of surface temperature is very similar across all considered {MISTIGRI} spectral configurations, with {RMSE} variation within 0.2 {K}. {E}ventually, our study permits us to select a 4-channels spectral configuration as the most suited for the {MISTIGRI} instrument, notably because it enables a moderately better capture of the emissivity contrast than a 3-channels one.},
  keywords = {{A}tmospheric corrections ; micro-bolometers detectors ; satellite mission ; design ; temperature emissivity separation ({TES}) error budget ; temperature/emissivity separation ; thermal infrared remote sensing ; vegetation canopy-scaled cavity effects},
  booktitle = {},
  journal = {{IEEE} {T}ransactions on {G}eoscience and {R}emote {S}ensing},
  volume = {60},
  numero = {},
  pages = {5000919 [19 ]},
  ISSN = {0196-2892},
  year = {2022},
  DOI = {10.1109/tgrs.2021.3099896},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084257},
}