A road alignment feature recognition and parameter calculation method based on vehicle pos
A technology of parameter calculation and feature recognition, applied in the field of integrated navigation and positioning system and measurement, can solve problems such as automatic identification and calculation of unfavorable highway alignment, identification and calculation of unfavorable alignment, human factor interference, etc. Improve efficiency and accuracy, reduce the effect of human factors
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[0052] An embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0053] In this embodiment, taking the linear feature recognition and parameter calculation of a section of Jingcheng Highway (20km in the whole) as an example, for the steps in the present invention, the results of the preliminary recognition of the linear shape, the window automatic recognition result of a section of the straight line, and the entire road section are respectively analyzed. The linear feature distribution and the fitting deviation of the whole road section are used to illustrate the feasibility and effectiveness of this method.
[0054] POS (Position Orientation System) is a positioning and attitude determination system based on the integrated navigation principle of GNSS (Global Navigation Satellite System) / INS (Inertial Navigation System). Its combination methods are mainly divided into three types: loose combination, tight combinat...
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