Track electronic map generation method

Abstract

The embodiment of the invention discloses a track electronic map generation method. The method comprises the steps: acquiring discrete point position data of a track line and attitude data of a carrier; determining a geometric line type of a track line based on the attitude data of the carrier; fitting the geometric line type; and generating an orbit electronic map based on the fitted geometric line type. Compared with the prior art, the requirement for a high-precision position sensor in measurement is lowered, a large number of repeated manual measurement links are reduced, possible mismeasurement and missed measurement in an area with poor signals are made up, meanwhile, the calculation process of the direction angle and curvature is reduced, the fitting precision is improved, and fitting errors caused by inaccurate linear recognition are avoided.

Description

technical field [0001] The invention relates to the technical field of orbit electronic map construction, in particular to a method for generating an orbit electronic map. Background technique [0002] Track electronic map construction is the process of generating track electronic maps through data collection, data processing, electronic map model design, track line fitting and other methods. It is important to update the map of the modified track. [0003] The measurement data commonly used in the construction of orbital electronic maps is to collect the position data of the centerline of the track line through high-precision GPS position sensors or real-time dynamic differential RTK (Real Time Kinematic) technology to obtain a series of discrete points of the track line. Data measurement methods include direct measurement method, indirect measurement method and composite measurement method. The direct measurement method is to directly collect the discrete point data of t...

AI Technical Summary

Problems solved by technology

The above methods are all based on the accurate division of line segments, and a single mode fitting is performed on the curves in the section. There is no dynamic adjustment process in the curve fitting. If the division of line segments is unreasonable, this method will cause large errors.

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