1 / 11

GIFTS System Calibration Requirements Flowdown

GIFTS System Calibration Requirements Flowdown. Hank Revercomb 9 March 2004. GIFTS Overall Absolute Calibration Budget. Subject of BB CDR. GIFTS Top-level Absolute Calibration Budget. GIFTS Spectral Calibration Budget. Standard Atmosphere used for conversion to brightness temperature.

azuka
Download Presentation

GIFTS System Calibration Requirements Flowdown

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GIFTS System Calibration Requirements Flowdown Hank Revercomb 9 March 2004

  2. GIFTS Overall Absolute Calibration Budget Subject of BB CDR

  3. GIFTS Top-level Absolute Calibration Budget

  4. GIFTS Spectral Calibration Budget Standard Atmosphereused for conversion tobrightness temperature ** **3-sigma for single sample is 3 ppm-100 sample average assumed

  5. GIFTS Radiometric Calibration Budget (Absolute)

  6. Radiance N derived from raw spectra of Earth (CE), Space (CS), and the internal Hot (CH) and Cold (CC) Blackbodies t is the signal transmission of the telescope mirrors &m is the transmission of the Blackbody pick-off mirror Bi is the Radiance from the Hot, Cold, and Space References [eg. BH=H B(TH) + (1- H) B(Tstr), where B(T) is the Planck function and Tstr is the effective structure temperature for reflection] GIFTS Radiometric Calibration Equation:Basis for Uncertainty Modeling

  7. GIFTS Absolute Calibration-Longwave Longwave Band (800 cm-1) Tc=255, Th=290, Ts=240, Tt=280 Requirement External BB GIFTS (excluding uncertainty in correction forNon-linearity & Polarization)

  8. GIFTS Absolute Calibration-Shortwave Shortwave Band (1800 cm-1) Tc=255, Th=290, Ts=240, Tt=280 Requirement External BB GIFTS (excluding uncertainty in correction forNon-linearity & Polarization)

  9. GIFTS Calibration Error Sources-LW Longwave Band (800 cm-1) Tc=255, Th=290, Ts=240, Tt=280 0.3% 0.3 K NEN/4=0.05

  10. GIFTS Calibration Error Sources-SW Shortwave Band (1800 cm-1) Tc=255, Th=290, Ts=240, Tt=280 0.5% 0.3 K NEN/4=0.0025

  11. GIFTS Blackbody Budget Subject of this BB Subsystem CDR:Budget is 0.5 K 3-sigma Absolute & 0.1 K 3-sigma Reproducibility, by analogy

More Related