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Table 3 Mean errors and RMSEs of the direct forward intersection, obtained using the vendor-provided RPCs, for three different terrains

From: Optical satellite sensor and positioning accuracy analysis for the Hongqi-1-H9 wide-range satellite in different terrains

Category Urban area Plain area Mountainous area
Direction Planar/m Vertical/m Planar/m Vertical/m Planar/m Vertical/m
Mean error 17.3303 11.3748 15.9954 12.2240 21.0881 17.0761
RMSEs 17.8739 11.6761 16.3902 12.3994 21.2616 17.4499