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asd
航空航天通信技术一般采用模拟通信的频率调制和数字通信的移相键控调制方法。这有利于充分应用信道带宽和能源。频率调制是在一定程度上改变载波或副载波的频率来传输信息的调制方法。移相键控调制是利用载波或副载波的相位跳变来传输信息的调制方法。移相键控又分二相移相键控、四相移相键控和多相移相键控,其中以四相移相键控和八相移相键控调制方法的效率较高(Aerospace communications technology commonly used analog communication of frequency modulation and the digital communication phase shift keying modulation method. This is helpful for making full use of channel bandwidth and energy. Frequency modulation is changed to some extent carrier or subcarrier frequency to transmit information modulation method. Phase shift keying modulation is the use of carrier or subcarrier phase jump to transmit information modulation method. Phase shift keying and binary phase shift keying, four phase shift keying and multiple phase shift keying, of which four phase shift keying and eight phase shift keying modulation method of high efficiency
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- 2011-07-13 11:21:08下载
- 积分:1
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TCP IP客户端
输控制协议(TCP,Transmission Control Protocol)是一种面向连接的、可靠的、基于字节流的传输层通信协议,由IETF的RFC 793定义。TCP旨在适应支持多网络应用的分层协议层次结构。(Transmission Control Protocol (TCP) is a connection-oriented, reliable, byte-stream-based transport layer communication protocol defined by IETF RFC 793. TCP aims at adapting to the hierarchical protocol structure supporting multi-network applications.)
- 2020-06-18 11:00:01下载
- 积分:1
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用户管理_Usermanagement
采用数据保存用户名、密码等数据,同时具备修改、添加、删除用户信息等(User name, password and other data are saved by data, and user information can be modified, added and deleted at the same time)
- 2020-06-18 02:40:02下载
- 积分:1
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modbusrtu
labview程序,可以接收和发送modbus rtu协议信息。“CRC VHL”为循环冗余校验(Labview program)
- 2014-01-04 16:44:04下载
- 积分:1
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《我和+LabVIEW》示例程序
说明: 《我和+LabVIEW》示例程序 Sample Program of "I and + LabVIEW"(Sample Program of "I and + LabVIEW")
- 2020-06-24 15:40:02下载
- 积分:1
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Usage_ActiveX_of_MeasurementStudio_in_VisualC
说明: 详细介绍了MeasurementStudio的控件在VC中的使用方法,难得的好文章。(Introduce how to use ActiveX of MeasurementStudio s in VC)
- 2010-04-22 19:04:42下载
- 积分:1
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labviewSignalProcessing
基于LabVIEW的机械振动信号分析系统的开发(labview signal processing)
- 2015-04-04 18:54:41下载
- 积分:1
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bridge-analysis-code
桥梁模态测量分析程序,用于桥梁一阶、二阶、三阶模态分析(Measurement of the bridge modal analysis program)
- 2020-12-19 21:19:09下载
- 积分:1
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信号产生、测量、处理与传输系统设计
在LABVIEW开发平台下,结合测试与信号处理理论设计下述虚拟仪器:
1 函数发生器;
2 频谱分析仪;
3 消噪演示仪;
4 串口通信演示仪。(Under the LABVIEW development platform, combining the test and signal processing theory, the following virtual instruments are designed.
1 function generator;
2 spectrum analyzer;
3 de-noising demonstrator;
4 serial communication demonstration instrument.)
- 2018-07-31 14:26:00下载
- 积分:1
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LabVIEW
学习labview的宝典资料,适用于有一定基础的读者(The book learning labview information applies to all the readers of a certain basis)
- 2013-07-22 23:54:10下载
- 积分:1