the conversion of a modulated carrier wave into a current equivalent to the original signal.
将信号转变成适合于传输的被调制信号的一种操作装置。
this paper introduces the influences of phase noise to radar systems. the measurement of phase noise in pulse modulated carrier is one of the most important techniques.
介绍了相位噪声对雷达系统的影响,这是毫米波精密制导技术的关键课题之一。
this design uses em78p451 to take the keyboard matrix and the correspondence signal code, launches by the 2fsk modulation way the 27m modulated carrier wave signal;
该设计采用em78p451作为键盘矩阵和通信的信号编码,以2fsk调制的方式将27 m调制载波信号发射出去;