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REMOTE SENSING FOR LAND & RESOURCES    2012, Vol. 24 Issue (4) : 26-29     DOI: 10.6046/gtzyyg.2012.04.05
Technology and Methodology |
Research on Primary Filtering Method for Pre-matching Road Sections Based on Four-level Grid Division
WU Wei, WU Qian-hong, DENG Ji-qiu
School of Geosciences and Info-physics, Central South University, Changsha 410083, China
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Abstract  The primary filtering of the pre-matching road sections in the map matching algorithm, in which GPS point finds the closest approximation road for driving, is the key factor of the time efficiency. There is a great deficiency of redundant searching range in the existing primary filtering methods. To reduce the searching range, this paper proposes a novel four-level interlaced grid filtering method, which can efficiently narrow the searching range. It is indicated that the method proposed in this paper is superior to the existing methods on the premise of guaranteeing the stability of the filtering range, as shown by experimental comparisons with many traditional methods based on GPS data. This method has high application values in many fields such as the vehicle navigations and large-scale GPS data processing because it can further reduce the searching time by controlling the searching range effectively.
Keywords extraterrestrial solar spectral irradiance(ESSI)      band mean solar irradiance(BMSI)      Thuillier      SBDART      WRC      oldkur.dat     

TP 79

Issue Date: 13 November 2012
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HU Shun-shi,ZHANG Li-fu,ZHANG Xia, et al. Research on Primary Filtering Method for Pre-matching Road Sections Based on Four-level Grid Division[J]. REMOTE SENSING FOR LAND & RESOURCES, 2012, 24(4): 26-29.
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