载波是指被调制以传输信号的波形，一般为正弦波。 载波信号，就是把普通信号（声音、图象）加载到一定频率的高频信号上，在没有加载普通信号的高频信号时，高频信号的波幅是固定的，加载之后波幅就随着普通信号的变化而变化（调幅），还可以调相，调频。载波信号一般要求正弦载波的频率远远高于调制信号的带宽，否则会发生混叠，使传输信号失真。
... carrier screening 载流子屏蔽 carrier shift 载频漂移，载波漂移 carrier signal 载波信号 ...
基于360个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
多载波信号的峰值平均功率比远远大于单载波系统，而且峰平比随着子载波个数无限增长。
The ratio of peak and average power in multi carrier system is much larger than that in single carrier system, and may grow unboundedly as the number of subcarriers grows to infinity.
无论是雷达、电子对抗，还是通信、仪器设备等都需要高稳定度的频率源，以保证载波信号的质量。
Whatever it is radar, eccm equipment, communication equipment or instrument, frequency source with high stability is needed to guarantee the quality of carrier signal.
根据红外发射管本身的物理特性，选用载波信号的频率为38K，设计制作出一种红外遥控器系统。
When designing the circuit the frequency of the carrier wave was chosen as 38K according to the physical property of the infrared sending tube.
应用推荐