| 一种基于SARIMA的经验对流层延迟模型 |
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| 引用本文： | 刘中流,任超,甘祥前,梁春丽. 一种基于SARIMA的经验对流层延迟模型[J]. 测绘通报, 2018, 0(3): 14-17,31. DOI: 10.13474/j.cnki.11-2246.2018.0068 |
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| 作者姓名： | 刘中流 任超 甘祥前 梁春丽 |
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| 作者单位： | 1. 桂林理工大学测绘地理信息学院, 广西 桂林 541004;2. 广西空间信息与测绘重点实验室, 广西 桂林 541004 |
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| 基金项目： | 国家自然科学基金地区科学基金，广西科技厅自然科学基金，广西空间信息与测绘重点实验室项目 |
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| 摘 要： | 为了减弱对流层延迟的影响，提高GNSS定位精度，探讨了在无气象参数的条件下，利用预测模型计算对流层延迟的可能性，并提出了一种经验对流层延迟预测模型，即基于季节性自回归移动平均模型（SARIMA）的对流层延迟预报方法。结合中国长春和上海两个地区的ZTD数据进行预测分析，预测结果表明：基于SARIMA的ZTD预报模型能够满足不同地区不同时段下的ZTD估计需求，是一种较高精度的ZTD预报方法。
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| 关 键 词： | 经验模型 对流层延迟预报 季节性自回归移动平均模型 精度改进 |
| 收稿时间： | 2017-06-28 |
An Empirical Tropospheric Delay Model Based on SARIMA |
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| LIU Zhongliu,REN Chao,GAN Xiangqian,LIANG Chunli. An Empirical Tropospheric Delay Model Based on SARIMA[J]. Bulletin of Surveying and Mapping, 2018, 0(3): 14-17,31. DOI: 10.13474/j.cnki.11-2246.2018.0068 |
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| Authors: | LIU Zhongliu REN Chao GAN Xiangqian LIANG Chunli |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | empirical model tropospheric delay forecast SARIMA accuracy improvement |
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