GPS is a well established tool in agriculture today. The predominant application of satellite based positioning is guidance and automated steering of tractors and implements. Guidance and steering systems reduce variable input costs in plant production by 5 % to 10 %. Accurate planting and seeding contributes substantially to saving costs. Establishing parallel and equally spaced tramlines with an accuracy of at least 5 cm affects the costs of all subsequent tasks such as spaying and fertilizing. Therefore RTK accuracy is desirable for almost all tasks in plant production. Moreover, RTK accuracy is a prerequisite for advanced farming practices such as strip tillage and controlled traffic farming. RTK correction data is usually provided by local RTK reference stations. Acquiring and operating an RTK reference station involves substantial costs. Correction data is transmitted with radio modems. Data transmission is very reliable, however the coverage is limited due to legal constraints of transmission power. RTK networks consist of several RTK reference stations reporting their measurements to an internet based server. The server may be accessed on a subscription basis using the NTrip protocol with GSM/GPRS modems or a DSL connection. RTK networks cover large areas. The quality of data transmission is highly dependant on the availability and reliability of the local GSM/GPRS network. This article discusses the pros and cons of local RTK reference stations and correction data from RTK networks.


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    Title :

    Review of RTK correction sources for agricultural applications in Germany


    Contributors:


    Publication date :

    2010


    Size :

    8 Seiten, 10 Bilder, 3 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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