A real-time positioning system for a precision chemical applicator has been developed; the system is composed of a low cost GPS combined with two optical encoders. GPS has good resolution in global range, but has poor resolution in local single-point positioning. With the optical encoders, the situation is just the opposite-they have high resolution in a small range, but the accumulative error grows as the vehicle moves. Based on the characteristics of GPS and optical encoders, an algorithm has been proposed to integrate the advantages of GPS and optical encoders. The results of this research show that the combined positioning system of GPS and the optical encoders can inherit all advantages of GPS and optical encoders and overcome their shortcomings. The positioning accuracy has been significantly improved, and can meet the real-time spatial high resolution positioning demands in field operations with the dynamic response of optical encoders.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Improving GPS positioning precision by using optical encoders


    Contributors:
    Lei Tian, (author) / Yunshan Zhou, (author) / Lie Tang, (author)


    Publication date :

    2000-01-01


    Size :

    475996 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Improving GPS Positioning Precision by Using Optical Encoders

    Tian, L. / Zhou, Y. / Tang, L. et al. | British Library Conference Proceedings | 2000



    Encoders

    Frigeni, Fabrizio | Springer Verlag | 2022


    Container tyre crane and hanger full-field positioning system using encoders

    LU RONGGUO / MA CHUHONG / HUANG AIPING et al. | European Patent Office | 2015

    Free access

    Rotary optical encoders: Automation workhorses

    British Library Online Contents | 2001