For the problem of carrier recovery in DS-SS communication, the model of dual PLL is presented, which is designed based on the auto -adapted algorithm.
针对直接序列扩频通信中的载波恢复问题，提出了一种基于自适应算法设计的双pll载波跟踪方法。
2
Remote auto meter reading technology with low voltage power lines carrier is a new technology which has a wide application foreground.
低压电力线载波远程抄表技术是一项有广泛应用前景的新技术。
3
Takes nc transformation of CA6140 type common lathe as an example, has explained the structure, installation and principle on automatic tool changing of auto-rotating tool-carrier.