长期以来,研究植物的科学家采用卫星测量植被的新鲜指数,即观测植物反射阳光值,预测植物的状态。 植物新鲜指数的变化是季节性的。
Scientists who study plants and trees from space have long relied on satellite-derived measures of “greenness”—that is, observations of the amount of sunlight reflected by vegetation.
由于在直线度误差测量过程中的各种原因,导致许多观测数据与实际值偏离或者很难进行处理。
Because of many reasons in the course of straightness error measuring, many original observed data deviate from actual value and are difficult to process.
局域差分gps认为在距离参考站较近的区域内,观测误差具有相关性。参考站将观测量与理论值之差作为差分改正数发送给用户进行差分改正。
Using GPS observation data from differential GPS reference stations, several errors, which can't modeled, were solved and sent to user around these reference station.
状态方程表示了阶比幅值的平滑变化,观测方程表示了测量误差和噪声。
Smooth order amplitude variance was expressed by using state equation, and measurement error and noise were expressed by adopting observed equation.
本文采用观测值曲线的分段拟合方法,对北京地区部分断层位移测量资料进行处理。
Using separation stage for fitting of observational curves in this paper, the surveying data of fault displacements of Beijing area has been analyzed.
采用测距三角高程法进行跨河水准测量,可以不量取仪器高,但观测值中有两类不同的观测量。
When completed river crossing leveling by means of trigonometric leveling with distance measurement, there are two types of observed values.
GPS姿态测量通常采用双差载波相位观测量,因此整周模糊值解算成为GPS实时姿态测量的关键问题。
Integer ambiguity resolution is the key problem of GPS based real-time attitude determination system which use double differencing carrier phase observables.
卡尔曼滤波方法已广泛应用于动态测量数据的处理,其单位权方差通常按新息向量和观测值的残差向量进行计算,增加了观测值残差向量的计算。
Kalman filtering method is widely used in data adjustment of dynamic surveying system, whose unit variance is usually computed with innovation vector of parameters and residual vector of observations.
论文介绍了全站仪法测量桥梁挠度的原理和计算公式,并对全站仪法观测桥梁挠度变形值的测量精度进行了分析。
The theory and the formula of the deflection deformation survey with total station instrument were introduced, and the survey accuracy was analyzed.
对用后均法进行测量数据误差分析加以探讨,提出可以用该法计算间接观测值的标准偏差。
The method to count standard deviation of indirect measurement value by using rear-average method was proposed.
在核数据评价和测量中,经常遇到同一物理量观测值的处理。
The processing of observed data for the same physical quantities are often met in nuclear data evaluations or measurements.
在空间预警系统中,由于系统采用红外测量,数据采样率低,很难直接获得关机点的高精度观测值。
In the space early warning system, infrared scan measurement and low sample rate make it difficult to acquire high precision burnout time.
RTK定位技术是基于载波相位观测值的实时动态定位技术,它在地形测量中蕴含着巨大的潜力。
The RTK localization is a real-time and dynamic localization technology which is based on the observed value in carrier phase. It has the huge potential in the terrain survey.
重点解决在没有轨道观测数据的情况下,如何利用再入飞行中的测量数据进行状态和参数估值。数据包括体轴角速率和过载,由固连于飞行体的速率陀螺和加速计给出。
The emphasis is put on estimating the states and parameters only on the basis of the re-entry on-board measurement data in the absence of trajectory observation data.
对用后均法进行测量数据误差分析加以探讨,提出可以用该法计算间接观测值的标准偏差。
The analysis of measurement data error by using rear-average method was discussed. The method to count standard deviation of indirect measurement value by using rear-average method was proposed.
本文从实用观点出发,建立了四维整体大地测量实用模型,并给出了地面观测值的观测方程。
The practical models of the four dimensional integrated geodesy is established in the practical point of view;
本文从实用观点出发,建立了四维整体大地测量实用模型,并给出了地面观测值的观测方程。
The practical models of the four dimensional integrated geodesy is established in the practical point of view;
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