以相邻点海面高度差为观测量的沿迹调和分析新方法

基金项目: 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(03-04-061469990324233-04-03);国家测绘局测绘科技发展基金资助项目(2001-01-02)

详细信息

Harmonic Tidal Analysis along T/P Tracks Taking Difference of Observed Sea Surface Heights at Adjacent Points as Observations

¹ Department of Hydrography and Mapping,Dalian Naval Academy,667 Jiefang Road,Dalian 116018,China;² First Institute of Oceanography,State Oceanic Administration,6 Xianxia Road,Qingdao 266061,China

Funds: 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(03-04-061469990324233-04-03);国家测绘局测绘科技发展基金资助项目(2001-01-02)

摘要: 采用TOPEX/POSEIDON卫星轨迹上相邻点的海面高差作为观测量,在交叉点分析结果的控制下构成同一弧段上观测量在两相邻交叉点间的综合观测方程,以轨迹上纬差0.1°的正常点的潮汐参数构成总体待估参数系列,实施最小二乘综合解算。分析结果表明,这种差分模式可以基本消除非潮汐因素的影响,提高潮汐参数估计的精度和可靠性,可比一般沿迹逐点分析给出更为平滑的沿迹参数分布,更符合海洋潮汐运动的物理背景。
- 卫星测高 /
- TOPEX/POSEIDON /
- 潮汐调和分析 /
- 差分模式
Abstract: An algorithm is presented for the improvement of harmonic tidal analysis along T/P tracks,in which the differences between the observed sea surface heights at adjacent points are taken as observations,and the observation equations are constrained with the results of the cross over analysis.It is indicated that the algorithm presented can efficiently remove non-tidal effects in the altimeter observations,and improve the precision of tide parameters.Moreover,parameters along altimetry tracks represent smoother distribution than those obtained from traditional algorithms.
- satellite altimetry /
- T/P /
- harmonic tidal analysis /
- differential mode