&lt;title&gt;Optical calibration results for the series of special sensor ultraviolet limb imagers (SSULI)&lt;/title&gt;

Osterman, Steven N.; Thonnard, S. E.; Williams, J. Z.; McCoy, R. P.; Dymond, K. F.; Budzien, S. A.; Nicholas, A. C.; Parker, S. E.

doi:10.1117/12.257204

Cited by 2 publications

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“…From these results it can be determined if and when a sensor will need to be refurbished or the order in which they should be launched to match the solar cycle. Several minor improvements have been made in the calibration process, but the measurement techniques and analysis have remained as described in Osterman (1996). In review, the first step of calibration is an estimation of the responsivity curve from a series of discrete wavelength spectra.…”

Section: Ground Calibrationmentioning

confidence: 99%

<title>Update on the calibration and performance of the special sensor ultraviolet limb imagers (SSULI)</title>

et al. 1999

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The Naval Research Laboratory has built five Special Sensor Ultraviolet Limb Imagers (SSULIs) for the Defense Meteorological Satellite Program. These sensors are designed to measure vertical intensity profiles of the Earth's airgiow in the extreme and far ultraviolet (800 to 1700A). The data from these sensors will be used to infer altitude profiles of ion, electron and neutral density. The first SSULI is scheduled to launch in 2000. An identical copy of the SSULI sensor called LORAAS was launched aboard the ARGOS spacecraft on February 23, 1999. Data from LORAAS will be use to verify the performance of the SSULI sensors, ground analysis software and validate the UV remote sensing technique. Together with the LORAAS instrument the SSULI program will collect data on the composition of the upper atmosphere for a complete solar cycle.All SSULI sensors were delivered for integration onto the spacecraft and have been returned to NRL for storage and periodic calibration checks until launch. Frequent monitoring of the sensor performance will be used to identify long-term optical degradation. This paper updates the sensor performance results reported previously in 1996 and includes the results of the first set of ground calibration checks after two years of storage. In addition, data from the LORAAS instrument is used to verify expected in-flight performance characteristics.

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Section: Ground Calibrationmentioning

confidence: 99%