Time series analysis and statistical test provide quantitative criteria to determine the optimum observation frequency.
时间序列分析和统计检验提供了优化地下水位监测频率的定量标准。
Using some techniques, such as the selected observation frequency band, deep-buried electrode, filtering of waves etc, can reduce the interference.
采用选择观测频段、埋深电极、隔直、滤波等技术措施减小干扰。
More than through his words, I've learned from observation; from the locations of his ads, the frequency of his posts, and a thousand other details the casual reader would never notice.
除了他的文章外，我通过观察，通过他的广告位置，通过他的作品更新的频率，以及通过一千个读者从未注意过的其他细节来学习。
But that obvious observation conceals a precise mathematical description: the link between the severity and frequency of conflicts follows a smooth curve, known as a power law.
用一个很简单的数学式，可以表示为：存活率与冲突频率间呈现平实的曲线关系，这被认为是法的力量。
The fifth is the observation in reality of a predicted link between increased sea-surface temperatures and the frequency of the most intense categories of hurricane, typhoon and tropical storm.
第五，观察资料显示：海洋表面温度的持续上升和最高级别飓风、台风以及热带风暴的发生频率之间存在着可预测关系。
The dual-frequency carrier phase observation equation is built and ionosphere-free predigested, the estimate formula of zenith wet delay is deduced with least square method.
建立了双频载波相位观测模型，并将其进行无电离层延迟化简，用最小二乘原理推导了天顶湿延迟的估值公式。
Besides, the improving of observation condition of low-frequency events is discussed.
讨论了改进(超)低频事件的观测条件问题。
Doppler frequency shift observation of ionospheric high frequency echo is an important method for studying ionospheric disturbances.
电离层高频反射回波的多普勒频移观测是研究电离层扰动的一个重要方法。
Sewall Wnight thought it desirable to weight each observation directly as the pollen frequency.
赛沃尔·劳埃特认为把每次观测直接加权作为花粉频率是可取的。
A simple algorithm for frequency offset estimation is proposed, which estimates the frequency offset with the periodogram and the correlation function of the observation samples.
提出了一种频差估计的新算法，该算法结合观测序列的周期图和自相关函数进行频率估值。
Through observation on shock wave and multiple pulsating caused by underwater blasting, the velocity, period, frequency and energy of shock wave and multiple pulsating are analysed.
通过水中爆炸水击波及其多次脉动的观测，分析了水击波及其多次脉动的传播速度、脉动周期、频率及能量分布等特性。
The LS channel estimation of OFDM systems can be viewed as a noisy observation of the true channel frequency response, so the noise component can be compressed through subspace projecting.
OFDM系统的LS信道估计可看作真实信道频率响应的一个有噪观察值，因此可采用子空间投影方法对噪声进行压缩。
In the case of small angular displacement, the natural frequency of the corresponding damping-free linear system is obtained, which is consistent with the experimental observation.
在小角位移的情形下，可近似得到相应的无阻尼线性系统的固有频率，它与观测结果吻合。
When realizing kinetic GPS differenced positioning using single frequency GPS receiver, the decision of integer ambiguity of phase observation is rather difficult.
利用单频GPS接收机进行实时动态差分时，相位观测值整周模糊度的实时确定比较困难；
The investigation use sample interview, behavior observation and Questionnaire, find out the behavior situation of the users with high frequency in green area.
在实际调查采访中采用抽样采访法、行为观察法、问卷调查法三种方法结合使用，了解高频率使用人群在场地中的活动情况。
Methods Clinical observation was conducted to calculate the phenotypic distribution frequency and gene frequency.
方法对以上家系进行临床表型观察，计算表型分布频率和表型基因频率。
The results indicate that the effect of the assimilation has a closed correlation with the frequency and precision of observation, has an instability brought by .
试验证明：同化效果的好坏与观测精度和观测频率密切相关，存在由于线性化和闭合假设带来的不稳定现象；扩展卡尔曼滤波本身具有强迫纠错作用。
Then influences of frequency offset and observation interval on symbol timing recovery system under this circumstance were studied.
针对这一特点，研究了加入卡尔曼滤波后频偏及观测时间长度对定时系统性能的影响。
According to the data obtained from our observation, we summarized the evolution tendency of ld patterns in different phases under different amplitude and frequency of electric field qualitatively.
根据实验观测所得的大量数据，定性总结了液晶斑图所具有的多种相态，以及它们在不同电压幅值和频率下相互演化的基本趋势。
In a total of seven-days observation, the types and frequency of the behaviors displayed by individual ants were recorded.
在持续一周的观察过程中对每只蚂蚁所执行的每种行为的频率进行了统计和聚类分析。
This paper studies the type, density, frequency and filling of fractures in the reservoirs through core observation and microscopic thin section analysis.
为此，通过岩心观察和显微镜下薄片鉴定，研究了裂缝的发育类型、发育密度、发育频率以及充填特征。
The radar cross section (RCS) of a target is dependent on frequency as well as observation angle.
目标的雷达散射截面（RCS）与照射频率和照射角有关。
Further more, in view of periodical character of dam observation data, a frequency spectrum analysis method for data treatment is suggested.
针对大坝观测资料周期性较强的特点，首次提出了频谱回归及分析法。
Each filter has flexible adjustability of its time window and frequency bandwidth. Therefore, high mode resolution and short observation time window can be self-adaptively achieved.
每个滤波单元时频域带宽柔性可调，能根据测量要求自适应取得较高的模式分辨率和较短的观测时窗长度。
The principle and structure of high frequency piezoelectric sensor for safe observation of fast fission reactor are introduced, and the testing results are presented.
本文介绍了用于快速中子反应堆安全监测的压电式高频传感器的原理、结构与试验结果。
The observation circuit consists of 555 infrared emitting circuit, amplifying circuit and frequency decoding circuit.
监测电路包括555红外发射电路，放大电路以及频率译码电路。
Multi-millisecond blasting is used in tunnel excavation, so there are several dominating frequency peak values in actual observation blasting seismic, and the energy distribution belt is wide.
由于隧道开挖采用多段微差爆破，所以多数实测爆破地震波中存在多个优势频率峰值，能量带分布很宽。
The rule of the disturbance of high frequency sealer to CATV was compresively studied by means of theoretical analysis, data measurement, and spot observation.
采用理论分析、数据测试和现场考察等方法对高频机干扰有线电视的规律进行探讨。
Radar chart used for showing directionality frequency distribution and simultaneously comparing many groups of data is advantageous for the observation of distributed intensity.
采用雷达图反映定向频率分布，可以同时对比多组数据，便于观察分布强度。
Radar chart used for showing directionality frequency distribution and simultaneously comparing many groups of data is advantageous for the observation of distributed intensity.
采用雷达图反映定向频率分布，可以同时对比多组数据，便于观察分布强度。
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