Data processing system for the Near-Earth Asteroid Rendezvous (NEAR) x-ray and gamma-ray spectrometer (XGRS) ground system

Timothy Patrick McClanahan; Irina Mikheeva; Jacob I. Trombka; Samuel R. Floyd; William V. Boynton; H. Bailey; Jasbir Bhangoo; Richard D. Starr; Pamela E. Clark; Larry G. Evans; Steven W. Squyres; Elaina McCartney; E. Noe; Ralph L. McNutt Jr.; Johannes Brueckner

doi:10.1117/12.366572

19 October 1999 Data processing system for the Near-Earth Asteroid Rendezvous (NEAR) x-ray and gamma-ray spectrometer (XGRS) ground system

Timothy Patrick McClanahan, Irina Mikheeva, Jacob I. Trombka, Samuel R. Floyd, William V. Boynton, H. Bailey, Jasbir Bhangoo, Richard D. Starr, Pamela E. Clark, Larry G. Evans, Steven W. Squyres, Elaina McCartney, E. Noe, Ralph L. McNutt Jr., Johannes Brueckner

Author Affiliations +

Proceedings Volume 3768, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics; (1999) https://doi.org/10.1117/12.366572
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

An x-ray and gamma-ray spectrometer (XGRS) is onboard the Near Earth Asteroid Rendezvous (NEAR) spacecraft to determine the elemental composition of the surface of the asteroid 433 Eros. The Eros asteroid is highly non-spherical in physical shape and the development of data management and analysis methodologies are in several areas a divergence from traditional remotely sensed geographical information systems techniques. Field of view and asteroid divergence from traditional remotely sensed geographical information system techniques. Field of view and asteroid surface geometry must be derived virtually and then combined with real measurements of solar, spectral and instrument calibration information to derive meaningful scientific results. Spatial resolution of planned geochemical maps will be improved from the initial conditions of low statistical significance per integration by repeated surface flyovers and regional spectral accumulation. This paper describes the results of a collaborative effort of design and development of the NEAR XGRS instrument ground system undertaken by participants at the Goddard Space Flight Center, University of Arizona, Cornell University, Applied Physics Laboratory, and Max Planck Institute.

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Timothy Patrick McClanahan, Irina Mikheeva, Jacob I. Trombka, Samuel R. Floyd, William V. Boynton, H. Bailey, Jasbir Bhangoo, Richard D. Starr, Pamela E. Clark, Larry G. Evans, Steven W. Squyres, Elaina McCartney, E. Noe, Ralph L. McNutt Jr., and Johannes Brueckner "Data processing system for the Near-Earth Asteroid Rendezvous (NEAR) x-ray and gamma-ray spectrometer (XGRS) ground system", Proc. SPIE 3768, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, (19 October 1999); https://doi.org/10.1117/12.366572

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