查询词典 range estimation

The descending trend has close correlation with the concentration range of extractable heavy metal in soil. The optimal estimation of accumulation factors resulted from the exponential equation was more precise than both the mean and the medium in the case of limited samples.

当数据量有限时，利用富集系数与对应可提取态重金属含量之间的回归模型对富集系数定量估值，其准确性要高于取相应的均值或中值。

Based on the zircon saturation temperature and hornblende geobarometer estimation, the crystallization temperature and pressure of enclaves and hosting granite are very close, in the range of 793~824℃ and 3.5~5.1Kb, respectively.

用锆石饱和温度和角闪石成分估算了包体和寄主花岗岩结晶的温度和压力表明，它们的结晶温度和压力条件相近，分别在793~824℃和(3.5~5.1)/10^8Pa范围内。

Range of upper bound index on error state variance that is consistent with circular pole index is discussed for state estimation of a class of linear stochastic systems.

对一类连续线性随机系统的估计问题，研究了与圆形极点指标相容的误差状态方差上界指标的取值范围，从而给出直接判定方差上界指标与极点指标相容的一个充分条件。

And DPT processing in terms of range cell leads to the estimation of acceleration and initial velocity.

按距离单元进行的DPT处理可获得目标加速度和初始速度的估计。

With the wide development of the mixed Poisson distribution in the medical, financial and insurance applications, it is receiving increasing attention. But, according to the author to understand, at present, studies on the Mixed Poisson distribution of the literature are relatively small, the most important reason is that it does not have a Mixed Gaussian distribution of a wide range of applications. However, with advances in computer technology and the development of statistical techniques, Mixed Poisson distribution analysis of statistical data will play an increasingly important role, thus the system in detail study of Mixed Poisson distribution model parameter estimation is necessary.

随着混合泊松分布在医学，金融保险等领域的应用越来越广泛，因此它越来越受到人们的重视，但是据作者了解，目前，对混合泊松分布研究的文献是比较少的，其中最重要的原因是它没有混合正态分布的应用范围广泛，但是随着计算机技术的进步和统计技术的发展，混合泊松分布将在统计数据分析中扮演越来越重要的角色，因而系统，详细的研究混合泊松分布模型的参数估计是非常有必要的。

For the clutter power slowly changed environment—range-dependent nonhomogeneity,the weighting covariance matrix estimation algorithm is proposed which is based on the relative distance criterion.

针对杂波功率依距离缓变的非均匀环境，提出了基于相对距离准则的加权协方差矩阵估计算法。

Odometry, Panoramic vision, and laser range finder data were fused in order to obtain a more realistic estimation of the mobile robot orientation and position.

利用Odometry，全景视觉数据，激光测距数据融合来更加逼真的估测移动机器人的方向和立场。

Estimation of experimental method Among the response range assigned, having stabile electric signal, having perfect line relation and recurrence, having many merit for example operation convenient rapid and high precision low cost and so on.

探头的初始化时间探头第一次初始化过程峰值一般较高，稳定时间也相当长，一般在220s至300s之间。

The main contents is: analyzing some detection method to moving target nowadays; particular studying the principle of detection moving target in SAR; analyzing SAR imaging theory and the echo model of moving target; discussing conventional SAR imaging , the movements of target cause the changes of doppler mass center and regulable frequency, and the changes cause effect the imaging result; introducing the estimation method of doppler parameter; analyzing theory of DPCA, derivating the formula needed, and validating it's validity and practicability through simulation; advancing the improved DPCA algorithm that combine the advantage of DPCA and ATI, and validating it through computer simulation; using the revision algorithm to range ambulate based on keystone transformation, and validating it through computer simulation; discussing the compensation art of SAR imaging.

主要内容有：分析了现有的一些动目标的检测方法；详细研究了SAR动目标检测的原理；分析了SAR成像理论和运动目标的回波模型；探讨常规SAR成像时，目标运动引起的多普勒质心和调频率变化，以及这些变化对成像结果的影响；介绍了多普勒参数的估计方法；分析了DPCA原理，推导所需要的基本公式，并仿真验证其有效性和实用性；提出了结合DPCA和ATI优点的改进DPCA算法，并仿真验证；探讨了SAR成像中的运动补偿技术。通过对仿真结果的分析，本文提出的方法具有一定的指导意义和参考价值。

But in the case of long-range acoustic communications in shallow water it is disturbed by severe multipaths whid produce increased inter-symbol interference. So the error of frequency estimation for the week signals is bigger and the BER becomes larger.

但是，用于浅海远程水声通信时，由于多径传播的影响，导致严重的码间干扰，使得远程微弱信号的频率估计产生较大偏差，误码率显著增加。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。