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报告编号	NASA/TM-2013-208641/Vol11, GSFC-E-DAA-TN8744
来源ID	NTRS_Document_ID: 20130014732
	The GLAS Algorithm Theoretical Basis Document for Precision Orbit Determination (POD)
	Rim, Hyung Jin; Yoon, S. P.; Schultz, Bob E.
英文摘要	The Geoscience Laser Altimeter System (GLAS) was the sole instrument for NASA's Ice, Cloud and land Elevation Satellite (ICESat) laser altimetry mission. The primary purpose of the ICESat mission was to make ice sheet elevation measurements of the polar regions. Additional goals were to measure the global distribution of clouds and aerosols and to map sea ice, land topography and vegetation. ICESat was the benchmark Earth Observing System (EOS) mission to be used to determine the mass balance of the ice sheets, as well as for providing cloud property information, especially for stratospheric clouds common over polar areas. The GLAS instrument operated from 2003 to 2009 and provided multi-year elevation data needed to determine changes in sea ice freeboard, land topography and vegetation around the globe, in addition to elevation changes of the Greenland and Antarctic ice sheets. This document describes the Precision Orbit Determination (POD) algorithm for the ICESat mission. The problem of determining an accurate ephemeris for an orbiting satellite involves estimating the position and velocity of the satellite from a sequence of observations. The ICESatGLAS elevation measurements must be very accurately geolocated, combining precise orbit information with precision pointing information. The ICESat mission POD requirement states that the position of the instrument should be determined with an accuracy of 5 and 20 cm (1-s) in radial and horizontal components, respectively, to meet the science requirements for determining elevation change.
英文关键词	ICE, CLOUD AND LAND ELEVATION SATELLITE POINTING CONTROL SYSTEMS EARTH OBSERVING SYSTEM (EOS) TOPOGRAPHY ORBITAL POSITION ESTIMATION GEOSYNCHRONOUS ORBITS ELEVATION MASS DISTRIBUTION POLAR REGIONS GEOPHYSICS ICE MAPPING
出版年	2013
报告类型	Technical Report
语种	英语
国家	美国
URL	http://hdl.handle.net/2060/20130014732
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/259346
推荐引用方式 GB/T 7714	Rim, Hyung Jin,Yoon, S. P.,Schultz, Bob E.. The GLAS Algorithm Theoretical Basis Document for Precision Orbit Determination (POD),2013.