The design and implementation of physicl layer of broadband MAP communication sub-network are mainly discussed in this artical, which includes the 16MHz AM/PSK signal modulator, the 156MHz AM/PSK signal demodulator-and headend remodulator, some new and original design thought and implementation methods are advanced.
Main work:(1) On the basis of control of the total structure of traffic microscopic simulation, put great emphasis on the requirements analysis and design thought of core subsystem.
Taking Microsoft Visual FoxPro 6.0 as RDBMS, and taking reader data input module for example, this paper analyzes and discusses the design thought, implementation procedure and methodology of a data input module of a management information system in detail.
In this paper, the basic design ideas, recent analysis results and validity of the 17 NESSIE (new european schemes for signatures, integrity, and encryption) candidate algorithms are introduced.
简要介绍了欧洲 NESSIE( new European schemes for signatures,integrity,and encryption)大计划最近公布的 17个分组密码算法的基本设计思想、最新分析结果及其有效性 .
The design ideas, basic structure, main functions, and invoke conventions of an advanced all-purpose plotting package are elaborated by presenting three all-purpose plotting softwares, PLOT88, PLOT89C and PLOT89,developed for DXY-800A and SPL-450 plotters.
This thesis introduces the design ideas and function characteristics of the Computer Testing System and the mode realized of its system function under Windows 95/98 platform.
A new furnace used in liquid phase epitaxial technology of III-V semiconductors isdescribed and its principle design ideas are presented. The new LPE has high perfor-mance (temperature stability is better than 0.03℃/24h, 0.01℃/2h;uniformity of flatezone is better than±0.025℃/400 mm;minimun cooling rate is 0.05℃/min).
On the basis of GIS dynamic information acquisition, the design idea and implementation methods of dynamic symbols in dynamic GIS are presented in this article.
This paper describes the vector part of CNSDTF, including design ideas, main characters, conceptual model, definition of spatial object, and file structure.
Current design criteria and principles of earthquake engineering design are reviewed, including safety factors, probabilistic approach, and two-level and multi-level functional design ideas.