论文部分内容阅读
以按小时间隔提取的全部观测记录为基础,经标准化乘后,按两个相邻读数之差建立观测方程。方程组的解算采用经典的最小二乘理论方法,由此可精确地计算出未知数的中误差。本方法十分灵活,可分析间隔为任意长度的观测记录。
固体潮观测的最小二乘分析方法
【摘 要】
：
以按小时间隔提取的全部观测记录为基础,经标准化乘后,按两个相邻读数之差建立观测方程。方程组的解算采用经典的最小二乘理论方法,由此可精确地计算出未知数的中误差。本方法十分灵活,可分析间隔为任意长度的观测记录。
【出 处】
：
测绘科技动态
【发表日期】
：
1989年02期
其他文献
Effects of current waveform parameters during droplet transfer on spatter in high speed waveform con
Aim at improving the stability of the Short-circuiting Gas Metal Arc Welding ( GMA W-S) process for the enhanced speed usage, effects of current waveform parame
The microstructure and hardness of the HAZ in a 800 MPa grade ultra-low-carbon microalloyed steel were studied.The results indicate that the heat affected zone
Two mathematical models are built to study the effects of the fluid flow on thermal distributions of the gas tungsten arc welding(GTAW) process. One model is ba
DD6 alloy was bonded by transient liquid phase (TLP) diffusion bonding. The main compositions of the interlayer alloy employed were similar to those of the base
Effects of alloy elements on the microstructure and crack resistance of Fe-C-Cr weld surfacing layer were investigated. The results show that microstructures of
<正>SYSWELD was used to simulate in-service welding process of gas pipeline of X70 pipeline steel.Welding thermal cycle,stress and deformation of in-service wel
Three kinds of mathematical models representing welding heat sources are presented. Among them, Gaussian model and double ellipsoidal model are used to analyze