摘要
本文首先给出了一种声纳信号模拟器的信号与噪声产生的算法。目标回波信号的产生采用复包络-调制法。噪声的产生利用白噪声激励AR滤波器来实现,分别讨论了复数AR滤波法和实数AR滤波法两种可能的实现途径,并分析了各自优缺点。在此基础上,给出了信号与噪声产生的硬件框图,并分析了其中的关键技术问题(均匀分布白噪声的获取、多路互不相关的噪声获取等)。最后给出了该声纳信号模拟器总体硬件框图和软件框图,并对该模拟器的运行结果进行了分析和检验。
At first, the algorithm for generating signals and noise with a sonar signal simulatior is proposed. The method of complex envelop modulation is employed in generating the target reflecting signal. Noise is proposed by activating an AR filter with white noise, and two approaches of real and complex AR filtering are compared. Based on the algorithm, a hardware block diagram is presented. Several key techniques, such as generation of uniformly distributed white noise and multi-channel uncorrelated noise are analyzed. Hardware and software designs are put forward. The experimental result with the simulator is analyzed and tested.
出处
《数据采集与处理》
CSCD
1993年第3期170-176,共7页
Journal of Data Acquisition and Processing
关键词
声纳
信号
模拟器
算法
工程
sonar, signal, noise, complex envelop modulation, AR filter, m sequence
