摘要
详细地介绍了动态GM(1,1)模型的建立及解算过程,使用傅里叶级数对动态GM(1,1)模型进行修正,然后用修正后的模型对高铁沉降进行预测,并将其与未修正模型结果的精度进行比较。实验结果表明,这种使用傅里叶级数进行修正的动态GM(1,1)模型有较高的预测精度,在沉降监测中有一定的实用性。
The establishment course and solving process of dynamic GM(1,1)model is introduced,and we use Fourier series of error residuals to modify dynamic GM(1,1)model,then forecast the subsidence of high-speed rail.Finally,we compare the resolution accuracy of the modified model and the original model.The result shows that this modified dynamic GM(1,1)model,based on Fourier series of residuals,has a higher forecasting accuracy,and more practical in subsidence monitoring.
作者
黎洋
花向红
姚周祥
何屹雄
LI Yang HUA Xianghong YAO Zhouxiang HE Yixiong(School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China Hazard Monitoring & Prevention Research Center, Wuhan University, Wuhan 430079,China)
出处
《测绘地理信息》
2017年第1期30-33,共4页
Journal of Geomatics
基金
国家自然科学基金资助项目(41174010
41374011)
精密工程与工业测量国家测绘地理信息局重点实验室开放基金资助项目(PF2013-6)