观测数据

The weight values in NLSM were adjusted automatically according to target data, which allowed the measured data with different dimensions or ranges to be treated at the same level, and thus the accuracy and stability of algorithm were improved accordingly. Derivative was replaced by the difference quotient in NLSM which further improved the algorithm speed.

非线性最小二乘法的权值根据目标数据自动调整，使得不同量纲和不同数值范围的观测数据可以在同一水平上进行，提高了计算的精度和稳定性；另一方面用差商近似代替导数加快了算法的收敛速度。

Data analysis adopts a comparatively "loose, informal and ad hoc" method and emphasizes the error resisting capability of the observation data.

数据分析是采取一种比较"宽松的、非正式的、特别的"方法，强调对观测数据误差的抗干扰能力。

This study is based on the national physical science fund subject (40271001) named ShanDong Coast Continent-Ocean Effect and Human Activity Environment Effect and ecological effectiveness, written by Xu Xuegong professor from Peking University and Jiaodong main goldfield environmental geologic investigate subject from ShanDong Environmental geologic water institute.

本文在大量的遥感数据资料、常规资料、专题地图、观测数据以及水文试验等资料的基础上，借助地理信息系统科学、遥感学、地质学、地貌学以及计算机科学等多种技术方法，分析金矿区环境地质条件，评价地质灾害的易发性，为合理整治当地地质环境提出建议。

In order to make good use of the historical observational data,this paper suggests that the forecasting problem should be regarded as an inverse problem rather than an initial value problem.

进一步论证了数值模式的误差信息，也或多或少的隐藏在过去的历史数据中，为了充分使用过去的观测数据，本文建议改变问题的提法，不提成初值问题，提成反问题。

There will be lots of observational data in the field experiments, the temperature data in the other bores at the same elevation of the leakage passage is selected and curve fitted under the logarithmic equation model. As a result, the radius of the leakage passage can be calculated.

而现场测试试验中有大量温度观测数据，提取与渗漏通道同一高程其它钻孔的温度值，并将这些实验数据在对数函数理论模型下进行曲线拟合，从而可以计算出渗漏通道半径。

Actually, the emission lines are prouduced by photoionization of the continuum radiation from the central part of accretion disks.

我们需要的是最直接的观测数据，但这样的文献太难找了，现在的文献上看到的几乎都是经某些理论处理过的数据。

Through applying PP based on RAGA,and the optimum projection direction and the value of project function can be obtained.

它是用来分析和处理高维观测数据，尤其是非正态、非线性高维数据的一种新兴统计方法。

The research demonstrates the theoretical and practical significance of wavelet analysis in decomposition and recomposition of GPS data.

利用小波分析工具实施GPS观测数据的小波分解和重组，研究GPS信号噪声的特性，对GPS网数据处理具有较好的指导和实用意义。

In practical projects, to meet the requirement for real time, continuous and long series dam safety monitoring data, a dam safety monitoring system needs to run continuously for a long time, and the data in the database will increase in quantity unboundedly.

问题描述在实际工程项目应用中，由于监测系统需要长期不间断运行，并且系统的观测数据要求长期保存，采集数据库中的数据量将呈无限增大趋势〔'一2」。

That is,the EM observation system set up in geomagnetic field moved with the ground motion so that the EM coseismic signals were produced.

地震破裂发生时的电磁辐射信号在记录数据中相比地震波达到观测点的电磁信号幅度要小得多，无法从观测数据识别出来。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。