Estimation of Horizontal and Vertical Components for Positioning Standard Deviation in Absolute Gps Positioning
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چکیده
Precise Point Positioning (PPP) greatly improves the precision of absolute GPS positioning by using the international GPS services (IGSs) orbit and satellite clock error products with positioning precision reaching the 1cm level [1-3]. At present, this technique has been widely applied in many engineering fields, such as mining engineering, high precise navy engineering surveying, lane surveying and cadastration[4-8]. Since the requirements for horizontal and vertical components of positioning standard deviations vary enormously in different applications it is necessary to estimate the horizontal and vertical components of positioning standard deviation. 2. POSITIONING PRECISION OF SPECIFIC DIRECTIONS IN WGS-84
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تاریخ انتشار 2010