Many experiments show that noises from environment are related to receiving conditions such as coupling between geophone and surface,numbers of geophone,element spacing and so on.
多次试验分析表明,环境噪音强弱主要与接收条件有关,尤其是检波器与地表耦合程度、检波器个数、组内距等因素关系密切,次生噪音强弱不仅与接收条件有关,还受激发条件的影响,调整激发因素增强有效波下传能量时,次生随机噪音能量也相应加强。
Because of the landform from hill becoming to mountain in Langzhong of Sichuan, the shooting and receiving condition of the near-surface become very complex.
四川阆中地区属丘陵向山区过渡地形,表层激发、接收条件极为复杂。
Based on technological characteristics of the 3D seismic prospecting in mountainous areas,purposely analyzed conventional 3D seismic shot and receiving conditions,seismic data processing,put forward corresponding technological schemes and operating measures.
根据山区三维地震勘探的技术特点,有针对性地对三维地震的激发条件、接收条件、地震资料处理等常规问题进行了分析,并提出了相应技术方案及施工措施。
SOPCA conditional access system design and appplication;
SOPCA条件接收系统的设计与应用
A Research on the Application of Smart Card in DTV Conditional Access System;
智能卡在数字电视条件接收系统中的应用研究
Principle Research and Project Implementation of DTV Conditional Access System;
数字电视条件接收系统原理研究与工程实践
Principle and Impletation of Digital TV Conditional Access;
数字电视条件接收系统的研究与实现
MHT Encryption Scheme and Its Application in Condition Access System;
MHT算法及其在条件接收系统中的应用
The Design of the PCTV Conditional Access System Based of DVB-T
基于DVB-T的PCTV条件接收系统设计
The Implementation of DVB Common Interface Protocol Base on Nucleus;
基于Nucleus的DVB条件接收系统通用接口协议的实现
Research of the CA System of the Middleware in the Integrated Service Terminal;
综合业务用户终端中间件条件接收系统的研究
Design and Implementation of Conditional Access System Based on DVB-C;
基于DVB-C的条件接收系统的设计与实现
Design and Improvement of STB Graphic Library and CAS;
机顶盒图形库与条件接收系统的设计及改进
A Research on the Application of Smart Card in DTV Conditional Access System;
智能卡在数字电视条件接收系统中的应用研究
A Research and Design on Some Key Techniques in Conditional Access System of Digital TV;
数字电视条件接收系统关键技术研究与实现
The Digital Television Conditional Access System Suitably Matches Levels Research and Realization;
数字电视条件接收系统适配层的研究与实现
The Research and Implementation of Head End of Digital Television Conditional Access System;
数字电视条件接收前端系统的研究与实现
Principle Research and Project Implementation of DTV Conditional Access System;
数字电视条件接收系统原理研究与工程实践
The Design and Realization of Conditional Access Set-Top-Box Based on Multicrypt Technique;
基于多密技术的条件接收机顶盒的设计与实现
DTV Conditional Access System and Implementation in STB;
数字电视条件接收系统及其在机顶盒中的实现
Key Distribution for Conditional Access System in Digital Television System
数字电视条件接收系统密钥分配研究与实现
Program Multiplexing and Conditional Access Technology of Digital Television System
数字电视系统的节目复用和条件接收技术
Dual Mode Conditional Access System Architecture for Broad Interactive TV
宽带互动电视双模有条件接收系统架构
Key Distribution and Subscriber Addressing Optimization for Conditional Access System
条件接收系统中的密钥分配及寻址优化研究