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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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HCF-Spec127-(Universal-Command-Specification)
HART Communication Foundation - Universal Command Specification
- 2020-11-20 14:39:36下载
- 积分：1
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Localization_computer
根据手机双麦克风进行定位 ，电脑客户端程序，c++源程序(According to the mobile phone microphone to locate
)
- 2021-04-10 18:08:59下载
- 积分：1
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Satellite-Communications-Research-Trends-and-Open
the satellite communication this paper introduced
- 2012-12-18 07:15:33下载
- 积分：1
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mod_demod
三种模拟调制与解调的算法，三种模拟调制为：AM，FM，SSB(Three types of analog modulation and demodulation algorithms, three types of analog modulation for: AM, FM, SSB)
- 2003-01-12 14:07:01下载
- 积分：1
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test_regn2
Bit error probability curve for QPSK mimo 2*1
- 2009-02-25 01:32:19下载
- 积分：1
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hippe-vector-pattern
vfev ve vvevfevefvevvevefve
- 2018-12-17 04:06:39下载
- 积分：1
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adder
说明： 用hspice写了一个做了16bit kogge stone四层点操作的树形加法器静态逻辑网表，所有管子的尺寸按照0.25u的尺寸设计挂上测试文件跑以后逻辑没问题，但是按照拉贝尔那本书上讲的关于逻辑努力优化的方法优化，在输入级加了两级buffer，只对最长路径支路尺寸优化(Use HSPICE to write a 16bit kogge made stone four layer tree adder static logic netlist, all pipe sizes according to the size of design 0.25u hang test file to run after the logic is no problem, but in accordance with the method of logic optimization efforts of Labelle's book about the optimization, plus two buffer in the input stage, only the longest path branch size optimization)
- 2020-12-21 11:39:08下载
- 积分：1
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acq3
说明： GPS中频信号频率和ca码搜索程序，原始数据可以在北京东方联星网站上下载(GPS IF signal frequency and ca code search procedures, raw data can be in Beijing Oriental Lianxing website)
- 2008-09-04 10:49:03下载
- 积分：1
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sc_fde
单载波系统在高斯白噪声和多径信道条件下的仿真——加入独立字导频且采用最小二乘信道估计(Single carrier system in gaussian white noise and multipath channel under the condition of the simulation to join the independent word frequency and the least square estimation channel
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- 2012-03-07 15:53:16下载
- 积分：1
