讨论一种用于某无人机直序扩频通信测控系统的PN码捕获方案。
The design of the PN code acquisition of the Direct Sequence Spread Spectrum(DSSS) system for a Unmanned Aerial Vehicle(UAV) TT&C System is described in this paper.
该算法的主要应用领域为卫星定位信号和直序扩频测距信号PN码相位的精确测量。
The algorithm is applicable to precise measuring of the PN code phase of satellite positioning signals and spread-spectrum ranging signals.
在输入信噪比极低的直序扩频系统中，常规的接收机获得的处理增益难以满足系统低误码率的要求。
The process-gains of the general receivers of DS/SS can't satisfy a low bit-error-rate if the signal-noise-ratio of input signal is very low.
在直序扩频码分多址(DS -CDMA)系统中，多址干扰(MAI)极大地制约系统容量及性能。
The capacity and performance of a DS-CDMA system is greatly limited by Multiple Access Interference (MAI) and therefore many multiuser detection algorithms have been proposed.
PL3105是为智能控制设计的电力线通信专用芯片，具有8051指令兼容的高速微处理器、直序扩频的载波通信等强大功能。
PL3105 is an intelligent control ASIC chip of powerline communication. It has 8051 compatible MCU instructions and direct sequence spectrum carrier communication.
PL3105是为智能控制设计的电力线通信专用芯片，具有8051指令兼容的高速微处理器、直序扩频的载波通信等强大功能。
PL3105 is an intelligent control ASIC chip of powerline communication. It has 8051 compatible MCU instructions and direct sequence spectrum carrier communication.
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