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1.
The present article is devoted to processing the results of measurements represented by a single realization of a transient random process with a limited volume of a priori information. The procedure is based on the highly efficient method of the multiplication of estimates. 相似文献
2.
Performance in the Primary and Secondary Processing of Pulsed Radio Signals in Passive Radar Systems
Simulation has been applied to observing, radio parameter estimating, and identifying electronic devices to estimate the performance in primary and secondary signal processing in passive radar systems for various forms of receiving and analyzing equipment. 相似文献
3.
An approach to solving the problem of evaluating the reliability of the results of measurements in thermal power engineering based on processing retrospective information by regression analysis methods is considered.__________Translated from Izmeritel’naya Tekhnika, No. 5, pp. 53–58, May, 2005. 相似文献
4.
An analysis was made of the process of forming the information resource of solid-state structures in optical spectroscopy during the stages of creating and recording information. The advantages of Fourier spectroscopy are indicated and an information measuring facility based on a Fourier spectrometer is described. 相似文献
5.
The basic principles of the solution of the problem of establishing a neutron spectrum from the results of measurements with integrated detectors and of realizing these principles in a new version of the KASKAD-620(176) software are described. The program is designed to determine the spectrum of neutrons not only in the neutron fields of nuclear reactors and in critical assemblies but also in the fields of thermonuclear neutron sources. 相似文献
6.
新产品开发可以分为信息加工与物料加工两个大阶段,前一个阶段具有不确定性与模糊性。通过对比分析发现两个阶段的加工过程具有一定的相似性,如果将信息加工对象比拟为“虚拟工件”,信息加工的人脑与电脑可视为物料加工的“虚拟设备”。这样,则可以利用后阶段成熟的排序策略进行虚拟工件在虚拟设备上计划安排及能力平衡,减少信息加工的不确定性与模糊性,在理论上统一了新产品开发的全过程。 相似文献
7.
大口径望远镜主镜支撑优化分析 总被引:3,自引:1,他引:3
大口径望远镜主镜的面形精度是影响望远镜成像质量的关键因素之一.光电系统中主镜轴向支撑点位置,对面形精度起着非常重要的作用,主镜支撑点位置合理与否,在一定程度上影响着光学系统的成像质量.本文对大口径望远镜主镜的轴向支撑和径向支撑技术进行了详细地研究,利用有限元软件ANSYS建立了主镜的参数化模型,对不同口径主镜的轴向支撑点数目和位置进行了优化,从而给出了最佳支撑点的位置.优化分析结果表明了,主镜的面形精度满足系统的精度要求,并且轴向支撑对镜面的面形影响较大. 相似文献
8.
An analysis is made of the characteristic features and problems of the optimal processing of the results of measurements in the case of a random observation function utilizing a nonlinear Kalman filter. A method is proposed for increasing the convergence domain of the filter with additional processing of measurements in the frequency domain. 相似文献
9.
提出了迭代傅里叶变换算法设计了计算全息图的新方法。采用迭傅里叶变换算法,计算配置与目标相关的迭代位相,使物波频谱具有限带宽和平滑性。实验结果表明,迭代傅里味算法求适当的位相参数,使计息图再现象上的斑纹被明显抑制,提高了信噪比和衍射效率。 相似文献
10.
S. S. Kukushkin 《Measurement Techniques》2006,49(8):769-773
The advantages gained with the use of a nontraditional theory of finite fields based on the constructive theory of residues
are demonstrated. By means of this theory, it is possible to “parallelize” processing, increase solution stability, and simplify
the computations and control of the reliability of the results obtained.
__________
Translated from Izmeritel’naya Tekhnika, No. 8, pp. 23–25, August, 2006. 相似文献
11.
将数理统计理论和曲线拟合技术的基本方法应用于车床主轴圆度误差的研究,在推断出误差总体规律的基础上,通过图表对轴径与误差之间的函数关系进行分析,并且拟合出经验方程,从中寻找出圆度误差的内在规律以及影响主轴加工的主要因素。 相似文献
12.
Astashenkov A. I. Belyaev B. M. Patrikeev V. G. Ipolitov B. A. Sharonov A. M. Vagin V. V. 《Measurement Techniques》2003,46(1):42-52
The proposed new approach to the procedure for measuring the flow rate and volume of gas under standard conditions in gas distribution organizations increases the reliability of the measurements. It is based on identical transformations of the Clapeyron-Mendeveleev equation, with modifications, and takes into account the composition of the natural gas and the recommendations of Federal Law No. 69-FZ (article 19) of March 31, 1999, about natural gas certification by Gosstandart of the Russian Federation. Use of the modified Clapeyron–Mendeleev equation is shown to changes the form of the transformation functions of various primary measuring transducers (turbine, rotary, vortex, ultrasonic, etc.) under the conditions of actual measurements. 相似文献
13.
A vector amplitude–frequency algorithm is proposed for suppressing multiplicative non-Gaussian noise when detecting weak gravitational pulses using cryogenic resonant gravitational antennas operating in the slow filtering regime. 相似文献
14.
The main properties of the natural logarithm error are considered as a generalization of the relative error with symmetrical limits of more than 10–20%. Its confidence limits for the results of measurements belonging to the normal and the uniform distributions are calculated as an example.__________Translated from Izmeritel’naya Tekhnika, No. 6, pp. 30–38, June, 2005. 相似文献
15.
本文在对涟钢焦化厂初冷器热工测试的基础上,采用有限元法对其进行数值模拟仿真优化研究,分析了焦化厂煤气初冷系统运行状况,找出了影响煤气冷却效果的因素和操作上存在的问题,对其运行方式进行探讨并提出了具体的改进建议,对煤气初冷器的运行效果起到了较好作用。 相似文献
16.
卷接机噪声主被动联合控制技术研究 总被引:2,自引:0,他引:2
卷接机是卷烟厂自动化程度较高的生产设备 ,也是烟草行业中的主要噪声污染源。本文结合某工厂使用的Mark9 5卷接机进行了详细噪声分析 ,并据分析结果提出了一种主、被动联合控制的降噪方案。试验结果表明 ,该方案对降低卷接机噪声 ,改善其声质量是行之有效的。 相似文献
17.
Albert Madansky 《技术计量学》2013,55(4):495-503
Suppose a complex mechanism, e.g., a missile, is built up from a number of different types of components, where the reliability of each of the components has been estimated by means of separate tests on each of the components. This paper gives a method for combining such data to determine approximate confidence limits for the reliability of the complete mechanism. More precisely, a method of determining approximate confidence limits for the reliability of “series,” “parallel,” and “seriesparallel” systems is given, based on observed failures of the individual components. It is assumed that the failures are independent, and that failures of a given component follow a binomial distribution with unknown parameter, the component reliability. The large-sample properties of the likelihood-ratio test are then used to construct the appropriate confidence limits for the system reliability. 相似文献
18.
大学生消费群广告名人效应的心理加工机制研究 总被引:3,自引:0,他引:3
从自动化加工和控制性加工这个视角研究了名人效应的心理加工机制。实验运用加工分离程序,探讨了大学生消费对名人广告的信息加工模式。结果发现:①与用一般消费做代言人相比,大学生消费对名人广告明显存在更多的自动化加工;②在非注意条件下,代言人的专业化程度明显地影响了大学生消费的控制性加工,但与自动化加工关系不大。 相似文献
19.
The effect of noise on the characteristics of the estimate of the center frequency of the spectrum of a narrow-band signal
is investigated. The relations which enable one to obtain the bias of the estimate of the frequency and its variance are compared
with the data of statistical modeling.
__________
Translated from Izmeritel'naya Tekhnika, No. 7, pp. 56–59, July, 2005. 相似文献
20.
O. M. Shteinberg A. S. Shvetsov S. A. Zhgun G. D. Lobov 《Measurement Techniques》2007,50(12):1297-1303
The particular features of the measurement of the torque of a rotating shaft using a surface acoustic wave sensor are considered.
An approach to choosing the parameters of a contactless transfer device and a piezoelectric substrate for such a sensor, which
enables the measurement accuracy to be increased, is proposed.
__________
Translated from Metrologiya, No. 12, pp. 15–25, December, 2007. 相似文献