Calibration and characterization of trap detector filter radiometers

Allen, David W.; Eppeldauer, George P.; Brown, Steven W.; Early, E A.; Johnson, B. Carol; Lykke, Keith R.

doi:10.1117/12.507995

Cited by 5 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The radiance responsivity allows for the signal output of the imaging spectrometer to be related to the physical units of radiance, allowing the instrument to be used in a quantitative manner relative to an absolute scale. This practice has been well described in [24][25][26][27]. The calibration results can also provide assurance of basic performance to assist in validating specifications.…”

Section: Radiometric and Spectral Characterizationmentioning

confidence: 99%

Untitled

2016

Int J Exp Spectroscopic Tech

View full text Add to dashboard Cite

show abstract

Section: Radiometric and Spectral Characterizationmentioning

confidence: 99%

Untitled

2016

Int J Exp Spectroscopic Tech

View full text Add to dashboard Cite

show abstract

“…The 0.2% rise between 36 and 49 cm seen in the GT9 size of source measurements ( Figure 10) is attributed to the sphere not having fully stabilized. 18 Narrow FOV Gershun tube instruments, such as the University of Arizona VNIR (4.6° FOV) 9 and the NIST UVFR and VisFR (5.65° FOV) 10 , cannot view the entire FEL lamp envelope as required. These instruments use an 'irradiance mode', the front aperture and tube removed leaving only the rear aperture, to measure an irradiance standard lamp.…”

Section: Gershun Tubesmentioning

confidence: 99%

Characterization and performance of optical input systems for a calibration transfer spectroradiometer

2004

View full text Add to dashboard Cite

For over three decades, the Radiometric Calibration Facility (RCF) at NASA's Goddard Space Flight Center (GSFC) has maintained calibrated uniform radiance sources for use by the global remote sensing community. As part of a continuing effort to reduce measurement uncertainties while improving efficiency, the calibration transfer hardware and operational protocols are systematically examined, with improved equipment and techniques being incorporated. This paper describes the optical characterization and presents radiance measurements of a new spectroradiometer, the GSFC 750/Integrating Sphere Irradiance Collector (ISIC), using a new input optical system. The performance of the new input optical system is compared with the two previous input systems.

show abstract

“…For field work, this means a stable, calibrated reference source such as the NPR must be available. The core elements of the UV filter radiometer are a silicon trap detector, a five position temperature stabilized filter wheel, and a pair of precision apertures separated by a fixed distance to define the throughput [26]. The narrow bandwidth filters were selected to coincide with ozone retrieval algorithms.…”

Section: Transfer Standard Radiometers At Nistmentioning

confidence: 99%

Best practice guidelines for pre-launch characterization and calibration of instruments for passive optical remote sensing

Ru¹,

Jp²,

Lykke³

et al. 2011

J. Res. Natl. Inst. Stand. Technol.

View full text Add to dashboard Cite

The pre-launch characterization and calibration of remote sensing instruments should be planned and carried out in conjunction with their design and development to meet the mission requirements. The onboard calibrators such as blackbodies and the sensors such as spectral radiometers should be characterized and calibrated using SI traceable standards. In the case of earth remote sensing, this allows inter-comparison and intercalibration of different sensors in space to create global time series of climate records of high accuracy where some inevitable data gaps can be easily bridged. The recommended best practice guidelines for this pre-launch effort is presented based on experience gained at National Institute of Standards and Technology (NIST), National Aeronautics and Space Administration (NASA) and National Oceanic and Atmospheric Administration (NOAA) programs over the past two decades. The currently available radiometric standards and calibration facilities at NIST serving the remote sensing community are described. Examples of best practice calibrations and intercomparisons to build SI (international System of Units) traceable uncertainty budget in the instrumentation used for preflight satellite sensor calibration and validation are presented.

show abstract

Calibration and characterization of trap detector filter radiometers

Cited by 5 publications

References 0 publications

Untitled

Untitled

Characterization and performance of optical input systems for a calibration transfer spectroradiometer

Best practice guidelines for pre-launch characterization and calibration of instruments for passive optical remote sensing

Contact Info

Product

Resources

About