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dsnonoise
- 直接序列扩频系统是在发端直接用具有高码率的扩频编码去扩展信号的频谱,而在收端用相同的扩频编码进行解扩使扩频信号还原为原始信号的一种扩频方式。直接序列系统中用的编码序列通常是伪随机序列或叫伪噪声(PN)码。要传送的信息经数字化后变成二元数字序列,它和伪随机序列模二相加(或相乘)后变成复合码去调制载波。在直接序列系统中通常对载波进行二进制相移键控调制(BPSK)。当扩频调制后由天线发射出去,在接收机中要有一个和发射机中的伪随机码同步的本地码,对接收信号进行解扩,解扩后的信号送到解调器取出传送的信息-
down-conversion
- 基于软件无线电的数字接收机中的下变频结构的程序-Based on software radio frequency conversion program under the digital receiver
stretch
- 雷达系统处理中一种去斜处理的数字实现方式,可应用与雷达的去斜处理接收机。-Digital processing of a radar system to ramp handling implementations can be applied with dechirping radar receiver.
digooal__code
- 数字中频接收机调制解调原代码 数字中频接收机调制解调原代码,-The digital intermediate frequency receiver with wide band digital intermediate frequency receiver modem source code modulation demodulation of the original code,
rdyh782
- 数字中频接收机调制解调原代码 数字中频接收机调制解调原代码,-The digital intermediate frequency receiver with wide band digital intermediate frequency receiver modem source code modulation demodulation of the original code,
964158
- 数字中频接收机调制解调原代码 数字中频接收机调制解调原代码,-The digital intermediate frequency receiver with wide band digital intermediate frequency receiver modem source code modulation demodulation of the original code,