HIRDLS functional performance in orbit: a summary

C. L. Hepplewhite; J. J. Barnett; J. G. Whitney; C. W. P. Palmer; O. O. Oduleye; T. W. Walton; M. Dials; J. G. Gille; T. Eden Jr.; B. Nardi

doi:10.1117/12.624163

13 September 2005 HIRDLS functional performance in orbit: a summary

C. L. Hepplewhite, J. J. Barnett, J. G. Whitney, C. W. P. Palmer, O. O. Oduleye, T. W. Walton, M. Dials, J. G. Gille, T. Eden Jr., B. Nardi

Author Affiliations +

Proceedings Volume 5883, Infrared Spaceborne Remote Sensing 2005; 58830J (2005) https://doi.org/10.1117/12.624163
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

The functional performance of the NASA Aura HIRDLS instrument since launch on the 15^th July 2004 is presented and discussed. The HIRDLS (High Resolution Infra-red Limb Sounder) is a 21-channel infra-red radiometer, using actively cooled MCT detectors on a common focal plane. It has many features that provide considerable flexibility of the commanding, control and the format and content of the telemetry. HIRDLS also features a precision 2-axis scan mirror and gyroscopes that are attached to the optical bench and together they provide additional data on the line of sight on small time scales. The stability of the temperature control of the focal plane and critical optical components is also presented and discussed. To-date the instrument has performed functionally without fault and in many aspects well within specifications. The only problem (and a serious one) so far encountered has been the optical blockage of the main aperture, which is discussed in other papers. Some aspects of the instrument that have been utilised to help characterise the blockage are outlined.

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C. L. Hepplewhite, J. J. Barnett, J. G. Whitney, C. W. P. Palmer, O. O. Oduleye, T. W. Walton, M. Dials, J. G. Gille, T. Eden Jr., and B. Nardi "HIRDLS functional performance in orbit: a summary", Proc. SPIE 5883, Infrared Spaceborne Remote Sensing 2005, 58830J (13 September 2005); https://doi.org/10.1117/12.624163

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KEYWORDS

Mirrors

Space operations

Sensors

Gyroscopes

Calibration

Control systems

Electronics

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