信号起伏 meaning in Chinese

signal fluctuation

The underwater acoustic channel is very complex where cochannel interference , doppler frequency offsets , narrow bandwidth and time and frequency selective deep fades obstructs the development of high speed and fidelity underwater data transmissions . thus projects of high speed and fidelity underwater signal transmissions become a hotspot in the fields of world academic circles . the conventional serial communication must use adaptive equalizer to combat the multipath in real - time
海洋水声信道是一种极其复杂多变的时-空-频变参信道，其信道窄，强多途干扰，信号起伏衰落严重，一直是水下信息可靠高速传输的主要障碍，因此如何在水声信道中高速率准确地传输数据，就成为世界性的热门课题。
The text compares experiment data with the selected theory direction fig and modifies the equal value and standard difference of each segment i n the se i ected wave w i dth d i r ect i on f i g by us i ng the re i at i ve i y between the statistical equal value and standard difference , then makes use of the controls the correlation time to real ize the signal undulate
通过实验数据与选定的理论方向图的对比分析，利用统计出的均值和标准差的相对量，对给定波束宽度的方向图每段的均值和标准差进行修正。然后利用相关特性，通过控制相关时间，以达到能够控制信号起伏的目的。