The UWB impulse radio technology is a new kind of communication method these years, in which the swash impulse and time-hopping code modulation techniques are mainly applied. 超宽带冲激无线电技术是近年来新兴的通信技术,其主要核心技术是采用了冲激脉冲技术和跳时码调制。
The bigger the number of repetition of impulse N s is, i.e. the more impulses that made of pre frame are, the rate of error code is; 而超宽带信号的脉冲重复数Ns越大,即组成每帧信号的脉冲数越大,系统的误码率越低;
A method of economic type tachometer which is realised by using old type tachometer or impulse generator composed by rotating speed sensor of rotary code generator combined with 8031 monolithic computer is introduced. 介绍了利用旧转速表或旋转编码器的转速传感器构成的脉冲发生器和8031单片机相结合来实现经济型转速表的方法。
It modulates the reference impulse by user pseudo-random code, and uses analog LMS feedback to obtain the optimal detection template. 采用用户伪随机码调制参考脉冲,通过模拟LMS反馈迭代获得最优的检测模板。
The paper also discusses the calculation method of Shift Impulse and programs some of the computer code. 本文还对换档冲量的计算方法进行了探讨,并编写了部分计算程序。