摘要
本文提出了一种集传统过点插值法和拟合法优点的曲线移位插值方法,既实现了单元域结点的过点插值,又通过扩展域反映曲线的趋势。通过数值实验,用曲线移位插值法进行精密星历插值,无论是内插还是外推,都比经典的拉格朗日插值方法精度高。
This paper puts forward a new interpolation advantages of traditional interpolation and fitting method. domain and reflects the curve trend by extended partition method, which can shift curve interpolation; absorb And it realizes interpolation through crunodes of cell Lagrange interpolation method are used for satellite precision latter, no matter how the interpolation or prediction is used. When the new interpolation method and traditional ephemeris, the accuracy of former is higher than the
出处
《工程勘察》
CSCD
北大核心
2008年第11期64-68,共5页
Geotechnical Investigation & Surveying
基金
地球空间环境与大地测量教育部重点实验室开放基金资助项目(课题编号:07-08)
关键词
IGS
精密星历
拉格朗日插值
曲线移位插值
International GNSS Service
precise ephemeris
Lagrange interpolation
shift curve interpolation
