The Estimation Accuracy of Joint Spectrum in Polarizational and Spatial Domains;
极化域-空域联合谱估计精度研究
According to the relationship between the selection of over-sampling rate and the estimation accuracy, the calculation method of optimal over-sampling rate was obtained.
该方法实现简单 ,运算量小 ,估计精度高 。
Three different sampling clock frequency offset and residual frequency offset estimation methods were developed to improve their estimation accuracy in internet protocol-orthogonal frequency division multiple access(IP-OFDMA)system,and the characteristics of the pilot structure in IP-OFDMA system was considered.
为提高基于网络协议的正交频分多址(IP-OFDMA)系统中采样时钟频率偏差与残余频偏的估计精度,结合IP-OFDMA的自身导频结构特点,对经典估计方法进行改进,提出3种不同采样时钟频率偏差与残余频偏的估计方法。
The estimation accuracy and resolving power are investigated to measure the performance of joint spectrum.
研究了联合谱的估计的重要性能指标:估计精度和分辨力,估计精度用克拉美劳限CRB(Cramer RaoBound)来具体度量,分辨力由极化域—空域模糊函数以及模糊图来描述。
Estimation accuracy of LFM signal parameters based on fractional Fourier transform are evaluated by a perturbation a- nalysis,and expressions for root mean square of estimation error of radian frequency and radian frequency rate are derived,the former is inverse proportion to observation time and the latter is inverse proportion to square of observation time.
本文采用一阶扰动分析的方法分析了基于分数阶Fourier变换的LFM信号参数估计精度,推导得到了频率估计误差均方值表达式和调频率估计误差均方值表达式,前者反比于信号时长,后者反比于信号时长的平方。
To eliminate the imprecision of carrier frequency offset estimation using the cyclic prefix,a fitting method based on LS algorithm(CPLS) is proposed,which can dramatically improve the estimation precision.
针对OFDM系统利用循环前缀的频率偏移估计精度不高的问题,提出了一种基于循环前缀的频偏估计LS拟合算法(CPLS),该算法可显著提高频率偏移的估计精度。
Dynamics of soil infiltrability of sloped lands under rainfall conditions measured with runoff-ponding method and the accuracy estimations;
产流积水法测量坡地降雨入渗动态过程及其精度估计
Accuracy estimation is an important part in linear parameter processing,and cumulative-sum method is a new method for linear parameter processing.
精度估计是线性参数处理中重要的一部分,而累积法是进行线性参数处理的一种新方法。
The methods of precision estimation of GPS RTK survey production are given in this paper,and their application is introduced with examples.
针对GPS RTK技术定位精度验后估计的欠缺,给出了GPS RTK测量成果的精度估计方法,通过实例介绍了此法的应用。
The methods of precision estimation of GPS RTK survey produc- tion are given in this paper.
本文针对此问题进行了研究,给出了GPS RTK测量成果的精度估计方法,并对GPS RTK测量技术用于控制测量的可行性进行了探讨,导出了相应的测量限差,为CPS RTK测量技术用于控制测量提供了理论依据和技术规定。
After reading some related research papers and a whole study of the principles and methods of controling network,the writer probes into the technologies of GIS -based automatical place-selecting , automatical network building and tentative precision estimation of the controling network.
本文在阅读相关成果文献的基础上,通过对控制网布设原则和方法的系统研究,探讨了基于GIS的控制网自动选点方法和控制网的自动组网方法以及控制网的假设精度估计方法,提出了基于GIS技术,以数字高程模型(DEM)为基础,以数字地形分析为主要技术手段的控制网自动设计与优化的新方法。
For the needs of active optics, accuracy estimate for the parameters, the wanted parameter, and the result for which the wanted parameter resolved by the method is substituted in the equation in the damp least square method proceed.
针对主动光学的需要,就阻尼最小二乘法求解过程中参数进行精度估计,对待求量进行精度估计,以及将待求量代入原方程后的所得进行精度估计,对它们的方差进行了推导。
Optimizing the Allocation of PMU Based Improving the Accuracy of State Estimation;
基于提高状态估计精度的PMU优化配置
A Research on the Accuracy of VaR and CVaR Sample Quantile Estimate
VaR与CVaR样本分位数估计精度的研究
Estimation Precision Improvement Method of Velocity Measurement for Doppler Radar
提高多普勒雷达测速估计精度的方法
Influence of Window Function on The Estimation Precision of Traditional Power Spectrum
窗函数对传统功率谱估计精度的影响
Discussion on Precision in Wideband Time Delay-TimeScale Detection and Estimation
宽带时间延迟-时间尺度检测与估计精度探讨
The method has the merits of good estimate precision and no needing spectral peak searching.
该方法具有估计精度高和无需谱峰搜索的优点。
The accura-cy of the estimatations is expressed in term of the resulting standard errors or as abound on the systematic error.
估计精度用结果标准误差或系统误差带表示。
Such estimates may be of limited accuracy.
但是这些估计精确度有限。
A new approach is proposed for high resolution estimation of non-stationary time delay.
提出了一种新的高精度时差估计算法。
Accurater Estimates of Convergence of Szász Operator;
Szász算子的收敛速度的更精确估计
Choice for fitting-model and accuracy estimating in GPS-leveling
GPS水准拟合模型的选取与精度估计
Technique of DSP optimization on fractional-pixel-accuracy motion estimation
分数像素精度运动估计的DSP优化方法
Investigation between Signal Size and Accuracy of a Signal-separation Based on Channel Estimation
信号长度与基于信道估计的信号分离精度研究
High-precision method of phase difference estimation in Coriolis mass flowmeter
科氏质量流量计相位差的一种高精度估计方法
Error estimate of accuracy and its engineering treatment in elec-tro-hydraulic position servo system
电液位置伺服系统精度误差估计与工程处理
Analysis of GPS Baseline Precision and Variance Component Estimation of GPS Control Network;
GPS基线精度分析及控制网的方差分量估计研究
A High-accuracy Frequency and Amplitude Estimation Algorithm of Sinusoid Signal;
一种正弦波信号频率幅值的高精度估计方法
An Estimate Model of the Sex Ratio of the Birth and Its Accuracy Analysis;
出生人口性别比的一种估计模型及其精度分析