Due to the higher demand of speed and precision of dsp , the intermediate frequency ( if ) digitalization receiver which is compared with analog system takes on the advantage of small volume , light weight , low cost , simple configuration , and easy integration . so that digitalization at if is current trend of communication and radar development , the traditional analog receiver is now being replaced by digital receiver gradually 由于对信号处理的速度、精度要求不断提高,而中频数字接收及信号处理系统与模拟系统相比,具有易于dsp算法编程实现、体积小,重量轻,造价低、结构简单,易模块化、系统配置更新快、维护升级方便等优点,所以,雷达信号接收机及处理机的中频数字化系统近年来备受重视,已经逐渐取代传统的模拟接收机。
All the work of this paper can be concluded as follows : 1 to research the ways of quota calculating 2 to build up the mode of data stream , analyze and introduce the work principle of system 3 to research of the structure of system and accomplish the function 4 to research the relationship between the system and tache of production and management , to research the pontes of system ( including man and computer , bom designing and maintenance system , capp , process aided designing system , others ) 5 to research the ways of software designing , database designing and accomplishment this system can finish the quota calculating and editing of parts and components , make requisition , examine and approve of the quota list and provide the data maintenance and management , and print various quota lists and classified collect lists 本文主要进行了以下几方面的工作： 1 、材料消耗定额制订方法的研究2 、建立数据信息流程模型、系统的工作原理的分析和介绍3 、计算机辅助材料定额系统结构的研究开发与系统功能实现的研究4 、在工艺数字化系统中材料消耗定额与其他生产管理环节和系统的关系(包括人机接口、 capp系统接口、工艺行程辅助编制系统接口及其它系统接口)的研究5 、软件设计方法和系统数据库设计和结构实现的研究系统可以实现零部件主要材料和车间辅助材料消耗定额的计算机辅助编制、修订，修改通知单辅助生成。定额明细表浏览审批并提供定额制订基础数据维护管理功能，按要求打印输出各种定额明细表和分类汇总表。
As a matter of fact , three types of wear debris can be classified by the present software programmed in this research , that is , normal , spherical and cutting debris can be identified . by analyzing and processing the actual ferrograph of wear debris from a used oil sample , the experimental results show that the effects of automatic recognition are equal to those of manual recognition , and the automatization of ferrographical diagnosis has been realized simply and partly , which will be helpful to improve the intelligence of the digital ferrography system 通过对实际油样中制取的图谱进行分析与处理，结果表明，本系统可以实现对三种常见的磨粒进行识别，即对正常磨粒、球状磨粒以及切削磨粒进行分类，验证了该软件的自动识别效果与人工识别相当，具有一定程度的智能效果，为铁谱仪数字化系统打下了一定的基础。
Based on archive management digitalization engineering of the beibei district of chongqing , a universal archive management digitalization system is developed by making full use of the information technologies including computer technology , communication technology , network technology , database technology and multimedia technology 本文以重庆市北碚区档案局进行档案管理数字化应用为依托，借助先进的计算机技术、通信技术、网络技术、数据库技术以及多媒体技术，设计并开发了一套通用的档案管理数字化系统。
Fast and accurate 3d data - technology leader providing optical 3d surface digitizing systems , measurement , quality inspection , cad services for improved product quality , speed to market in automotive , aerospace , energy , electronics , consumer products , other industries through world class technologies 快速而精确的三维数据技术领先提供光学表面三维数字化系统,计量,质检民航服务,为提高产品质量,对市场的快速反应,在汽车,航天,能源,电子,消费品,其他行业通过世界一流的技术
