摘要
将伪随机码技术引入管道检测,通过对伪随机码信号的分析,提出根据接收信号幅频特性中的幅度相差23 dB的频率点及环境的其他参数,计算出管道绝缘电阻的参数,从而确定管道腐蚀状况的一种新方法,经过仿真和实验验证了伪随机码在管道检测中应用的可行性。
In the situation of nondestructive pipes, a new method was presented in this paper. The technique of pseudo noise code was introduced. Through the change of pseudo noise code in the course of receiving and other signals based on detection conditions, we can analyze the status of underground lines. The principle of this system was analyzed and was simulated. The result shows that the design is reasonable.
出处
《管道技术与设备》
CAS
2005年第6期14-16,共3页
Pipeline Technique and Equipment
关键词
管道检测
PN码
信号处理
同步
pipeline＇s detection
pseudo noise code
signal process
synchronization
