查询词典 automatic data processing

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。

Professional processing of all kinds of stainless steel mixing tank, stainless steel (2520) sintered crucible, stainless steel hydrogenation cans, stainless steel cabinet, cabinets, grinding machine, the ball mushroom machine, mixer, aluminum parts processing and welding, and titanium and titanium clad steel plate chemical processing equipment, sealing cans, mixing tank, reactor, heat exchanger, titanium crucible.

专业加工各种不锈钢搅拌罐，不锈钢(2520)烧结坩埚，不锈钢氢化罐，不锈钢箱体，柜子，磨筛机，球蘑机，混料机，铝件的加工和焊接，及钛和钛复合板的化工设备加工，密封罐，搅拌罐，反应釜，换热器，钛坩埚。

The key-point development: resin processing, density board,bajiao fennel oil processing,drug processing and so on.

开发重点：开发松脂深加工、八角茴油加工、药材种植加工、构树栽培加工、速丰林以及八角低产改造等项目。

This paper is to VisualC++ tool for digital image processing techniques, the basic theory, algorithm modules, thus realize thorough understanding of the basic function of image processing, including images of gray histogram equalization, image transformation, the Fourier transform and discrete cosine transform, the image enhancement processing low-pass filter high-pass filter and transformation.

本文是以VisualC++为工具，对数字图像处理技术的基本理论、模块算法做了深入的了解，从而实现图像处理基本功能，其中包括图像的灰度变换，直方图均衡，图像傅里叶变换和离散余弦变换，图像增强处理中的低通滤波和高通滤波变换。

The processing zone includes the processing of board, the furniture processing zone, the product of wood; the business zone includes the log market, and board wood market( the trade of jointer's board, plywood, fiberboard),furniture market, ornament materials market.

加工区包括板材加工区、家具加工区、木制品加工区；交易区包括原木市场、板材市场（经营细木工板、胶合板、纤维板等）、家具市场、装饰材料市场。

For example, machining centers and flexible manufacturing technology, break through the many varieties of case processing technology difficulties; spiral bevel gear machining technology to solve high-speed sewing machine driving accuracy and functioning of the key issues of noise; holes line grinding processing technology to meet the needs a key-hole parts precision and roughness of the basic requirements; sphere processing technology, adapted to the high-speed packet transmission machine components both inside and outside the spherical exercise the continuous improvement of machining accuracy; precision casting process technology and advanced heat treatment technology for the development of industrial machine effective support.

例如，加工中心及柔性制造技术，通过对案件的处理技术困难，许多品种突破；螺旋锥齿轮加工技术来解决高速缝纫机发球准确率和噪音的关键问题发挥作用；孔磨削加工技术路线的满足需求的关键孔零件的精度和粗糙度的基本要求；领域的加工技术，适应高速数据包传输内外球面行使加工精度的不断提高机械零件，精密铸造工艺技术和先进的热为工业机器处理技术发展的有效支持。

In order to decrease the measuring error of signal processing in laser Doppler velocimeter, frequency spectrum correction methods for lacer Doppler signal were proposed. Basic principles of energy centrobaric correction, ratio correction and phase difference correction were expounded. The three methods processing ideal sinusoidal signals was simulated with different signal frequencies, and so was the ratio method processing sinusoidal signals with different noises and signal to noise ratios.

在激光多普勒测速仪中，为了减小由信号处理算法带来的测量误差，提出运用频谱校正算法对多普勒信号的频谱进行校正，详细阐述了能量重心法、比值法和相位差法3种离散频谱校正算法的基本原理，运用这3种算法对理想正弦信号进行仿真，并运用比值法对信号施加不同频率和信噪比的噪音下的正弦信号和实测的多普勒信号进行仿真及实验研究。

Steady progress in the industrialization of agriculture,"company plus farmers", the form of orders for agriculture development operation, and built a Gan green, gold, as, for many years Jinlong, Tuen Mun River, the great cause of Zhangye, in a number of species, such as agricultural and sideline products processing dominated leading enterprises to create economies of scale with the grain and oil, fruits and vegetables,cao xu , seed production, light industry, such as a pillar industry of raw materials, and built a more than 200 agricultural and sideline products processing enterprises, the formation of a grain and oil, dehydrated vegetables, corn starch, sugar beet , malt beer, tomato paste processing line.

农业产业化稳步推进，"公司加农户"、订单农业等经营形式不断发展，建成了甘绿、金象、有年金龙、屯河、张掖大业、中种等一批以农副产品加工为主的龙头企业，形成了具有规模效益的粮油、果蔬、草畜、制种、轻工原料等支柱产业，建成了200多家农副产品加工企业，形成了粮油、脱水蔬菜、玉米淀粉、甜菜榨糖、啤酒麦芽、番茄酱等加工系列。

Total, domestic subsidiaries have advanced roller air drying system and automated packaging granulation production lines, with production of 10,000 tons in the production and processing capacity of particles, is a collection cultivation, acquisition, processing and marketing in one of modern Marigold Processing enterprises.

总、分公司都拥有国内先进的滚筒式气流烘干系统和自动化制粒包装生产线，具有年生产上万吨颗粒的生产加工能力，是一家集种植、收购、加工和销售于一体的现代化万寿菊加工企业。

The article has analyzed Opuntia Milpa Alta's nutrition and biological activity components change in different period of growth, to provide for its use on the basis of processing, and develop multiple enzymatic liquefaction for processing cloudy Opuntia juice beverage, investigate the cloud stability, color stability and the nutrition active components change in processing and storage.

本文研究分析了不同生长期米邦塔仙人掌的营养和生理活性物质的变化，旨在为其加工利用提供依据，同时研究了仙人掌混汁饮料生产中的热烫护绿工艺、酶解工艺、贮藏稳定性、色泽稳定性，以及加工和贮藏中活性成分的变化。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。