1、

In order to improve the synchronization in signal demodulation, we modify the traditional modem scheme by adding a '1' bit as synchronization pulse to the beginning of each byte. The modified modem scheme avoids bit errors caused by desynchronizing.

为了改善信号解调中的同步问题,论文对传统调制解调技术进行了改进,通过为每个字节添加一个1比特作为该字节的同步脉冲,消除了因不同步而导致的误码。

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2、

With the LFM pulse frame synchronization method, the performance of UWA communication system based on DPSK is apparently improved.

同时运用线性调频脉冲帧同步法,改善了基于差分相移键控的水声数字通信系统的性能。

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3、

the experiment showed that heating synchronization of hot wire tig welding with single power source could be achieved. in the base current period, wire were heated, while in the pulse current period, wire were melted.

实验结果表明:单电源脉冲热丝TIG焊机能够实现焊丝的同步加热,即在基值电流期间,填充焊丝通入预热电流,脉冲电流期间熔化焊丝。

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4、
5、

measurement of frequency with double-counter and multi-periods pulse synchronization method based on microprocessor

用单片机实现双计数器多周期同步法频率测量

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6、

the paper introduces the principle of frequency measure based on double-counter and multi-periods pulse synchronization method, and the designing with microprocessor is offered.

介绍了双计数器多周期同步法频率测量原理,给出了用单片机实现的具体实现方案。

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7、

ust real time signal process system is called signal extraction system. it can increase signal noise ratio through synchronization and average and limited pulse response filtering.

称为信号析取系统的超声波检验实时信号处理系统,它通过同步平均和有限脉冲响应滤波能够提高信噪比。

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