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The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.

在结构辨识中,常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失,因此,本文提出了新的有益思想,即在保留一定相关性的基础上进行辨识:将输出向量ΔW与环境函数矩阵S构成增广矩阵A,然后采用"比定阶行列式"来剔除相关向量的方法,这样既可以尽可能多地保留了对落点影响大的强相关参数,又可以对落点影响小的强相关参数给予剔除;在参数估计中,改进了特征根估计中特征根和特征向量的筛选方法,提出"近零"准则,从而大大提高了参数估计的精度;再者,鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的,因此,本文又深入分析了造成天地模型不一致的原因,提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验;最后,鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响,因此本文深入地分析了SINS制导工具误差系数与外界环境的关系,提出了基于过载变化大小的分段辨识和分段实时补偿的算法。

In addition, in the design of software configuration it analyzes the realization of the high-speed data sampling program and intelligent information processing and monitoring. At last it introduces function of sbftware of systems analysis in brief.The operation demonstrates that the brand-new monitoring method of the monitoring system can acquire the operation axis of large-scale rotary kiln by rule and line on the operation position, and it is a break-through in real-time monitoring method.

现场运行表明,该监测系统所采用的全新的监测方法能够在十分恶劣复杂的现场环境中准确地获取大型回转窑的运行轴线参数,对大型回转窑实时监测方法是一种新的突破;同时,采用的特制电涡流传感器及微机软件进行误差补偿极大地提高了监测系统的测量精度:采用的模糊自适应智能滤波方法有效地滤除了本系统恶劣环境下各种干扰因素。

The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.

本文的主要研究工作和贡献如下:●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法,即首先求出多路信号之间的互相关,进而得到互功率谱密度矩阵,然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响,并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来,最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数,利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集;●提出了一种确定FH信号检测门限的策略,该策略不仅使得检测门限能够通过理论计算得到,而且还显著地抑制了非跳频信号的干扰,从而能有效地检测出FH信号;●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法,即首先利用宽带空间谱测向技术得到接收信号的DOA,然后采用宽带波束形成技术对特定方向进行空间滤波,实现多个信号的分离,最后分别提出了两种FH信号的盲检测和参数盲估计方法,第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号,第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号;●将空间插值的概念和宽带波束形成技术结合起来,提出了一种基于频域处理的宽带恒定束宽的波束形成方法。

As a consequence, based on the water system denseness method and the tectonic d...

论文在分析地应力及地应力场特征和规律基础上,论述了地应力场主要组成部分;较系统地阐述了粗集理论的主要内容,应用粗集理论计算各因素对地应力场的影响,并提出基于粗集理论计算权重的方法;解释了图像滤波使图像边界模糊的原因,提出基于粗集理论的图像滤波方法;研究TM图像各波段的信息特征、最佳波段组合及各波段赋色;剖析构造形迹在反推构造应力场中作用,建立断裂构造形成时的构造力学模型;利用遥感资料解译了与新构造应力场密切相关的水系,在GIS支持下,应用水系密集度方法和构造力学模型计算了新构造应力场的方向与大小;分析了地形起伏对重力场的影响,并建立了相应的数学模型;研究了地应力在矿山巷道及开采设计中的应用。

Firstly, the background and the significant of the research is discussed, modern software engineering and its development is also outlined, and the present states and the reason of using the modern software engineering in power systems are also analyzed. Secondly, related theories and methods of the modern software engineering are systematically given in details, which establish the basis of the software development with the software engineering in power systems. Thirdly, the necessity of the developed power system software with the software engineering is analyzed deeply and the key techniques in carrying out the software development with the software engineering are discussed. Based on these, a concrete approach about the software development with the software engineering is proposed. And then, the software design process of 'GPS synchronous monitoring system of Hunan power grid'is given to demonstrate the utilization of the approach proposed. Subsequently, quality and efficiency of the software is analyzed, which indicates the validity of the method used. At last, the main work and fruitage of the thesis is concluded, and the further research is also pointed out.

论文首先论述了课题研究的背景和意义,概述了现代软件工程及其发展,分析了现代软件工程在电力系统中的应用现状及其原因;然后系统地阐述了现代软件工程的相关理论和方法,奠定了电力系统软件工程化开发的理论基础;接着分析了电力系统软件工程化开发的必要性,探讨了实施工程化开发涉及到的关键技术,结合现代软件工程的理论和方法,提出了一种电力系统软件工程化开发的具体方法;之后以湖南电力系统状态GPS 同步监测系统软件的开发为例,详细地阐述了该工程化方法在电力系统软件开发中的具体实践过程,并分析了软件开发的结果,指出了该方法是解决软件开发质量和效率问题的有效途径;论文最后对主要工作和成果进行了总结,并指出了有待进一步开展的工作。

Based on digital cadastral surveying, the paper discusses Standard Operation Procedure of Cadastral Surveying by studying on cadastral investigation mode in Gulin county. and determines the general procedure of property investigation, priciples of land parceling and cadastral coding, and the investigation way of differrent land types. With field data collection and indoor work processing, the new cadastral map in Gulin county with the scale of 1:500 which meets the precision requirement. has been finally plotted.

本文正是在此基础上,从数字化地籍测量的角度出发,通过对古蔺县建成区和规划区的地籍调查作业模式的研究,探讨了标准地籍测量作业方法,并确定了权属调查的一般流程和宗地划分原则,地籍编号原则,以及社界、地类、农田的调查方法,通过对外业数据采集和调查所获取数据进行内业处理和精度分析,最终编制了满足精度要求的1:500比例尺古蔺县地籍图。

Chapter one is "Introduction". On the basis of summarizing the history of the study of the pictophonetic characters, we suppose some theoretical principle, such as the principle of the correspondence between the form and the meaning of the individual graph of Chinese characters, the principle of the total graphs of Chinese characters being a character-formation system, and the principle of the optimum development of the character -formation system in the history, and som analytic methods, such as the methods of structrue-function analysis, form-position analysis and meaning factor analysis, in the study of the pictophonetic characters. Chapter two is titled"General knwledge of the pictophonetic character." We discuss their origins, nature and some standards of distingnishing them, introduce the knowledge about the editions of SHUO WEN JIE ZI, analyse the functions of the modules of pictophonetic characters in detail, discuss concretely the function of phonetic graphs showing origins and pronunciations, the function of meaning graphs showing meanings and analogies, and the function of distinguishment when the two kinds of graphs are conbined. Chapter three is"The system of meaning graphs of Xiao Zhuan system."After we describe the structure of the meaning graph system, the relations between meaning graphs, the distributions of the function of meaning graphs showing meanings, and the frequency of all this kind of graphs, we get a table of all meaning graphs, a table of the frequency. Chapter four is"The system of phonetic graphs of Xiao Zhuan system."We describe the structure of the phonetic graph system, the relations between phonetic graphs, and between their function showing origins and their function showing pronunciations, and their frequency, then we get ageneral table of phonetic graphs and table of their frequency. Chapter five is "conclusion". We think that systematical methodology is useful in describing and analysing the formation system of Chinese characters. The methodology is adaptable in describing the formation system of modern Chinese characters as well as the historical character systems, adaptable in describing horizontally as well as comparing vertically. Only when we finish the systematical vertical compare on the base of systematical horizontal decription, could we know the true history of the system of Chinese characters, recover the rule of the system's development, and supply the theoretical supports for the scientifical arrangement of modern Chinese characters.

第一部分—绪论,在总结形声字研究历史状况的基础上,提出了研究形声系统的理论原则和分析方法,即汉字个体字符形义统一的思想,汉字字符集合构形系统的思想,汉字构形系统历史演变系统优化的思想等三项理论原则和结构功能分析法,形位分析法,义素分析法等三种分析方法,还扼要地介绍了具体的工作程序和论文的主要内容;第二部分—形声字概述,论述了形声字的来源、性质和鉴别标准,介绍了对《说文解字》正篆形声字说解中的传抄讹误,版本异文,说解错误校勘和考证的经过,详细分析了形声字构件的功能,具体讨论了声符的示源功能与示音功能,义符的示意功能与类化功能以及声符与义符组合中的相互区别功能;第三部分—小篆字系的义符系统,从义符系统的构成、义符间的相互关系,义符示意功能的分布及义符的构字频度等不同侧面,对义符系统进行了全面的描写,产生了义符总表、义符间意义关系总表和义符构字频度总表;第四部分—小篆字系形声字的声符系统,从声符系统的构成、声符间的相互关系,声符的示源功能与示音功能的关系以及声符的构字频度等不同侧面,对声符系统进行了全面描写,产生了声符总表和声符构字频度总表;第五部分—结束语,在全面测查小篆字系形声字的基础上,对研究汉字的方法和现代汉字发展方向的问题提出了一些看法,认为系统论的方法是描写和分析汉字构形系统行之有效的方法,系统论方法,不仅适用于历史上文字系统的描写,也适用于现代汉字构形系统的描写,不仅适用了断代描写,也适用于历史比较,只有在对汉字断代系统描写的基础上进行系统的历史比较,才能认清汉字系统历史演变的真相,揭示汉字系统发展的客观规律,为科学地整理现代汉字提供理论上的依据。

Traditional withdrawing cannot how under this kind of protection with the digestion method the skeleton cell, must use the new method to be able to cause in the skeleton cell DNA to leave from the structure middle reaches, but drifts away at the same time, fears the DNA frail double strand not to be able to undergo fiercely shakes with the intense chemical action, therefore this request must relatively temperately use one kind to withdraw the method.

传统让步无法怎么在这保护之下以消化方法最基本的细胞,必须使用新方法能导致在最基本的细胞DNA 离开从结构中间伸手可及的距离,仅漂泊去,恐惧DNA 虚弱双子线同时不能剧烈地接受震动以强烈的化工行动,因此这个请求必须相对地温和地使用一种类撤出方法。

This dissertation is based on the historical development and the current situation in Pingyao's tourism market, through tourists' poll on the spot and internet, analyzes the overall constitution of the tourists generating market of Pingyao by means of combination of economic and geographic measures through the view of spatial scale and demography, including the total amount of the tourists in Pingyao, the constitution of realistic tourist generating market and potential tourist generating market, the nature of the tourist generating market in Pingyao. The thesis establishes an ACD matrix with the occupation of tourist as a main factor to analyze the relationship between tourist flows and their occupations, with the combination of quantitative and qualitative method to take an insight into the tourist segments selected, in the hope of advising a scientific measure and practicable basis for future development of Pingyao's tourism industry in order to convert the present dilemmatic situation to an optimization.

数据发布平台,依据淡季和春节对平遥旅游者抽样调查问卷资料、网络电子邮件问卷和其他有关历史和现状资料,采用地理分析与市场分析相结合的手段,从空间尺度、人口学特征等方面综合分析了平遥旅游客源市场的总体特征:平遥旅游市场总量状况、现实客源地和潜在客源地构成现状、平遥旅游客源市场的基本特征;对以客源地作为平遥细分市场的分析方法进行了研究,构建出ACD矩阵指导目的地对客源地的选择和细分,进而描述性说明每一类客源地细分市场进入细分选择的依据;将职业特征作为人群细分的标准,通过说明职业特征的高度相关性,以职业细分了平遥的客源市场,定量和定性相结合,分析每一类入选的细分人群,为平遥旅游客源细分市场提供科学的方法,作为平遥下一步开发旅游产品、设计旅游项目的依据,以实现平遥旅游资源的优势转化。

The innovations of the thesis have been shown in several aspects as follows: put forward the transfer mechanism model of the landslide thrust on basis of the soil arching theory, and according to the model the formula about how to compute the thrust acting on the pile and the maximum pile spacing have been deduced. Set up the displacement model about the interaction of the pile and landslide, and their relatively displacement can be taken into consideration when computing the pile, thus the limitation of supposing the distribution of landslide thrust has been avoided, at the same time, the applied condition of the model and the computing procedure have been given. Bring forward the improved computing method of the anti-sliding pile with prestressed cable, which has been verified rational and applicable, making the method more perfectly in theory. Through the study on the mechanical model of the foundation beam with prestressed cable, put up the limit design idea of the structure, and the realization procedure of the idea has been given and programmed with the finite element, which leads to a new thinking for the safe and rational design of the foundation beam with prestressed anchor cable.

本论文的创新之处在于,用土拱理论建立了滑坡推力在抗滑桩与坡体之间的传递机制模型,并由此得到了作用于抗滑桩上的滑坡推力计算式以及最大桩间距的确定条件式;建立了抗滑桩与滑坡体相互作用的位移模型,该模型能考虑桩与坡体相互作用过程中二者相对位移的影响,避免了人为假设滑坡推力分布形式的缺陷,给出了其适用条件和计算过程;提出了预应力锚索抗滑桩的改进计算方法,使得预应力锚索抗滑桩的计算理论更加完善,通过实例验证了该方法的适用性和合理性;在预应力锚索地梁力学计算模型研究的基础上,提出了预应力锚索地梁极限状态设计的新思想,给出了该设计方法的实现途径并编制了有限元计算程序,为锚索地梁合理而安全的设计提供了一种新思路。

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推荐网络例句

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力