extended_reciever

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 )

manual leica geooffice

PT2262 PT2272 315M/433M 无线编码芯片中文资料，简单易用(The PT2262 PT2272315 Ms/433 M lead-in codes the chip Chinese data, simple easy use)

ONVIF协议， 大华摄像头SDK开发说明(ONVIF protocol, Da Hua camera SDK Development Notes)

MICREL GIGABIT PHY KSZ9021GQ(I).pdf

iEEE 601 标准 信道编码相关 卫星通信(the standard channel iEEE 601 encoding related satellite communications)

本程序的性能已经达到较高水平，用于特征降维，特征融合，相关分析等,对于初学者具有参考意义。( The performance of the program has reached a high level, For feature reduction, feature fusion, correlation analysis, For beginners with a reference value.)

一种基于信号二阶四阶矩的信噪比估计方法，该文件中包含该方法的文章以及matlab程序。(This estimation method is based on the signal second-order signal-to-noise ratio of the fourth moment. The file contains a paper and a code.)

交通部发行的城市公共交通IC卡技术规范，用于CPU卡规范(Technical Specification of IC Card for Urban Public Transportation issued by the Ministry of Communications for CPU Card Specification)

RTD25系列源代码，仅供分享，对学习显示器软件的有好处！(RTD25xx source code for you，it is can help you for study LCD Monitor software.)