The invention discloses a high-precision track detection method and system based on inertial navigation, and relates to the technical field of track smoothness detection. According to the method, first error data and second error data are obtained by combining a second speed and a second coordinate of a navigation positioning device and a third speed and a third displacement of a mileage measurement device, a first calibration distance and a second calibration distance are calculated, and a corresponding calibration state is entered at the calibration distance; attitude compensation data and equipment compensation data are updated in a calibration state, so that error accumulation caused by long-time continuous detection is avoided. According to the method, the instantaneous quantity of the compensation data at each moment is predicted according to the first smooth model and the second smooth model, the instantaneous angular velocity is adjusted by the instantaneous quantity, and the actual values of the velocity and the coordinates are generated, so that the measurement precision of the track geometric data is improved.

    本发明公开了一种基于惯性导航的轨道高精度检测方法及系统,涉及轨道平顺性检测技术领域。该方法结合导航定位装置的第二速度和第二坐标以及里程测量装置的第三速度和第三位移获得第一误差数据和第二误差数据,计算第一校准距离和第二校准距离,在校准距离进入相应校调状态,在校调状态更新姿态补偿数据和设备补偿数据,避免长时间连续检测带来的误差累积。本发明本发明根据第一平滑模型、第二平滑模型预测补偿数据在每一时刻的瞬时量,由该瞬时量调整瞬时角速度并生成速度和坐标的实际值,进而提高轨道几何数据的测量精度。


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    Title :

    Track high-precision detection method and system based on inertial navigation


    Additional title:

    基于惯性导航的轨道高精度检测方法及系统


    Contributors:
    ZHAN DEJUN (author) / HUANG YUN (author) / RAO GUYIN (author) / HUANG ZONGSHENG (author) / XU GUANGMING (author)

    Publication date :

    2025-02-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS



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