相干载波 meaning in Chinese
coherent carriers
Examples
- Project and error analysis about one way and single frequency non - coherent carrier wave velocity measurement
单程单频非相干载波测速方案及测速误差分析 - This thesis first studied the communication system with detailed theories so that to choose the appropriate method of modulation and demodulation . n / 4dqpsk is a kind of modulation method which is appropriate to transfer in the attenuated channel
/ 4dqpsk是一种比较适合在衰落信道中传输的调制方式，它不需要提取相干载波，因而不存在相位模糊、环路跳周等问题。 - Several carrier frequency estimation algorithms including ekf and rls with opened loop are analyzed , which aim to settle the carrier phase estimation problem preferably under high dynamic circumstances . an improved phase and frequency esti - mation algorithm is proposed in the paper . simulation results show that the algorithm is faster and more precision than other algorithms
为更好地解决高动态环境中的载波同步问题,本文进一步研究了存在动态多普勒频移情况下的开环相干载波同步问题,包括基于扩展卡尔曼滤波、最小二乘算法等的频差、相差联合估计方法。 - The principle and structure of pll ( phase - locked loop ) , including fll and loop filter , are analyzed and described . the module of carrier synchronization in the all - digit ds - qpsk receiver was carried out in the fpga chip . the problem about the estimation and track of the correlative carrier frequency under high dynamic circumstances was resolved very well
针对某遥测遥控全数字接收机的研制,对相干载波同步中的锁相环、锁频环、 dpll 、本地nco等进行了详细的分析和优化设计,在fpga上实现了高动态全数字ds - qpsk接收机中的载波同步模块,解决了大范围和动态多普勒频移下接收机的相干载波提取与跟踪问题。