TY - JOUR A1 - Tan, X. T1 - RESEARCH ON THE LAYERING A* ALGORITHM FOR REAL-TIME NAVIGATION JO - Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Archives VL - XL-4/W5 SP - 243 EP - 246 Y1 - 2015/05/13 PB - Copernicus Publications SN - 2194-9034 UR - https://isprs-archives.copernicus.org/articles/XL-4-W5/243/2015/ L1 - https://isprs-archives.copernicus.org/articles/XL-4-W5/243/2015/isprsarchives-XL-4-W5-243-2015.pdf DO - 10.5194/isprsarchives-XL-4-W5-243-2015 ER -