Technology and Methodology |
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An Approach to the ADS40 POS Data Processing Method Based on Precise Point Positioning |
LIU Ping 1,3, YANG Liao 1, ZHU Chang-Ming 2, LI Bao-Ming 1 |
1.Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China; 2.Institute of Remote Sensing Application,CAS, Beijing 100101, China; 3.Graduate School of Chinese Academy of Science, Beijing 100049, China |
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Abstract POS (Position and Orientation System) provides position and attitude information during aerial photography. There must be at least one reference GPS base station for traditional differential GPS (DGPS) positioning, and the establishment of a GPS station would be a very costly and difficult task in some areas. GPS Precise Point Positioning (PPP) has been advanced as a way to avoid the use of the GPS base station. This paper describes the approaches to the processing of an actual aerial photographic data by using both kinds of GPS positioning methods. The final results of the POS-supported aerial triangulation from PPP are compared with those from DGPS solution. The empirical results suggest that the accuracy of POS-supported aerial triangulation from PPP can satisfy the 1∶2 000 topographic map specifications for aerophotogrammetric office operation. It is feasible to process the POS data of ADS40 without a GPS Base Station by using Precise Point Positioning.
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Keywords
Rock-soil ground
Danger geology
Image characteristics
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Issue Date: 29 June 2010
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