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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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LabVIEWprogrammingcourseware
精通LabVIEW程序设计 一书的课件,适用于初学者和有一定经验的工程师(Proficient in LabVIEW programming courseware book for beginners and has some experience of engineers)
- 2010-03-04 15:27:03下载
- 积分:1
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saopinyi
LabVIEW设计的扫频仪代码,需要用LabVIEW打开(LabVIEW Design Scanner code needed to open LabVIEW)
- 2010-05-12 21:13:40下载
- 积分:1
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labview读取USB数据的升级版
USB设备数据读取,将USB中数据保存到电脑上(USB device data read, save the data from USB to the computer)
- 2020-10-16 22:47:28下载
- 积分:1
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Grubbs
利用 格拉布斯准则 剔除粗大误差的labview程序(Grubbs labview program guidelines eliminate the careless error)
- 2021-04-08 23:09:01下载
- 积分:1
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New folder (3)
this folder contains VIs related to USRP.
- 2019-06-08 22:23:44下载
- 积分:1
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RS232
说明: labview和RS232串口通信###################(Labview and RS232 serial port communication ###################)
- 2020-04-18 19:55:23下载
- 积分:1
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WebBrowser
使用labview制作而成的网页浏览器,输入网址即可打开网页(Web browsers made with LabVIEW)
- 2018-05-06 18:20:42下载
- 积分:1
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labview--PMAC-Pcomm32
labview调用动态链接库相关说明文档,及调用PMAC动态链接库Pcomm32.DLL的例程(labview called dynamic link library-related documentation, and call PMAC dynamic link library routines Pcomm32.DLL)
- 2021-03-11 08:19:26下载
- 积分:1
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Dual-channel-signal-acquisition
labview 双通道信号采集和回放系统,可以实现信号采集,设置频率(labview dual-channel signal acquisition and playback system that can achieve signal acquisition, set the frequency)
- 2013-11-07 10:18:40下载
- 积分:1