GAO Meng, XU Aigong, ZHU Huizhong, XU Zongqiu, XU Xinchao. An Algorithm of BDS Un-difference Network RTK with Triple-frequency[J]. Geomatics and Information Science of Wuhan University, 2020, 45(7): 996-1001, 1014. DOI: 10.13203/j.whugis20180362
Citation: GAO Meng, XU Aigong, ZHU Huizhong, XU Zongqiu, XU Xinchao. An Algorithm of BDS Un-difference Network RTK with Triple-frequency[J]. Geomatics and Information Science of Wuhan University, 2020, 45(7): 996-1001, 1014. DOI: 10.13203/j.whugis20180362

An Algorithm of BDS Un-difference Network RTK with Triple-frequency

  • According to the problem of complex data processing caused by the correlation between stations and satellites in the double-difference network RTK(real-time kinematic), an algorithm of BDS un-difference network RTK with triple-frequency is proposed. Firstly, the integer linear relationship among extra-wide-lane, wide-lane and triple-frequency integer ambiguity is used to determine double-difference integer ambiguity between BDS network RTK reference stations. Then, according to the composition relationship between double-difference and un-difference integer ambiguity, un-difference integer ambiguity between reference stations is quickly determined at single epoch. On this basis, a high-precision region error correction model of BDS un-difference is established to realize the error correction and integer ambiguity fixing of use. This algorithm is tested by the measured triple-frequency data of BDS CORS(continuously operating reference stations) network. The results indicate that the algorithm of un-difference network RTK with triple-frequency can effectively overcome the correlation between station and satellite which is brought by the double-difference network RTK and make the operating type of the network RTK more flexible.
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