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报告编号	NASA-CR-182686, JPL-PUBL-87-35, NAS 1.26:182686
来源ID	NTRS_Document_ID: 19880012193
	The Spring 1985 high precision baseline test of the JPL GPS-based geodetic system
	Davidson, John M.; Thornton, Catherine L.; Stephens, Scott A.; Blewitt, Geoffrey; Lichten, Stephen M.; Sovers, Ojars J.; Kroger, Peter M.; Skrumeda, Lisa L.; Border, James S.; Neilan, Ruth E.
英文摘要	The Spring 1985 High Precision Baseline Test (HPBT) was conducted. The HPBT was designed to meet a number of objectives. Foremost among these was the demonstration of a level of accuracy of 1 to 2:10 to the 7th power, or better, for baselines ranging in length up to several hundred kilometers. These objectives were all met with a high degree of success, with respect to the demonstration of system accuracy in particular. The results from six baselines ranging in length from 70 to 729 km were examined for repeatability and, in the case of three baselines, were compared to results from colocated VLBI systems. Repeatability was found to be 5:10 to the 8th power (RMS) for the north baseline coordinate, independent of baseline length, while for the east coordinate RMS repeatability was found to be larger than this by factors of 2 to 4. The GPS-based results were found to be in agreement with those from colocated VLBI measurements, when corrected for the physical separations of the VLBI and CPG antennas, at the level of 1 to 2:10 to the 7th power in all coordinates, independent of baseline length. The results for baseline repeatability are consistent with the current GPA error budget, but the GPS-VLBI intercomparisons disagree at a somewhat larger level than expected. It is hypothesized that these differences may result from errors in the local survey measurements used to correct for the separations of the GPS and VLBI antenna reference centers.
英文关键词	CALIBRATING ERRORS GEODESY GEOPHYSICS GLOBAL POSITIONING SYSTEM RADIO SOURCES (ASTRONOMY) VERY LONG BASE INTERFEROMETRY DATA PROCESSING LASER RANGE FINDERS NAVSTAR SATELLITES PERFORMANCE TESTS PLATES (TECTONICS)
出版年	1987
报告类型	Technical Report
语种	英语
国家	美国
URL	http://hdl.handle.net/2060/19880012193
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/259101
推荐引用方式 GB/T 7714	Davidson, John M.,Thornton, Catherine L.,Stephens, Scott A.,et al. The Spring 1985 high precision baseline test of the JPL GPS-based geodetic system,1987.