测绘通报 ›› 2018, Vol. 0 ›› Issue (3): 14-17,31.doi: 10.13474/j.cnki.11-2246.2018.0068

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An Empirical Tropospheric Delay Model Based on SARIMA

LIU Zhongliu1,2, REN Chao1,2, GAN Xiangqian1,2, LIANG Chunli1,2   

  1. 1. College of Geomatics and Geoinformation Guilin University of Technology, Guilin 541004, China;
    2. Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin 541004, China
  • Received:2017-06-28 Online:2018-03-25 Published:2018-04-03

Abstract:

In order to reduce the effect of tropospheric delay and improve the positioning accuracy of GNSS,this paper discusses the possibility of using the prediction model to calculate tropospheric delay in the absence of meteorological parameters,and an empirical tropospheric delay prediction model is proposed:a tropospheric delay prediction method based on the seasonal autoregressive integrated moving average model (SARIMA).Combined with Changchun and Shanghai ZTD data to predict and analyze,the results show that the ZTD forecasting model based on SARIMA can meet the ZTD calculation demand at different time in different regions,and it is a kind of high precision ZTD forecasting method.

Key words: empirical model, tropospheric delay forecast, SARIMA, accuracy improvement

CLC Number: