摘要
基于测宽法原理对轨道移频信号进行检测,通过测量波形零点间的波形宽度进而求出移频信号的一系列周期,分析这些周期从而可以得出移频信号的上边频、下边频、中心频率以及低频。同时对原有算法进行相应的更改,提高了其抗干扰能力以及精确度,并使用Matlab对改进后的算法进行仿真,验证了其可行性。此方法简单易行,具有很高的工程实用价值。
Based on the principle of width measurement method we detected frequency shift signal on the track for testing by measuring the width of the waveform between two zero points and then calculating the width of frequency shift signal a series of cycles, and analyed of the cycle so that we can get the above frequency shift signal frequency below the frequency, the frequency below the center frequency and low frequency, while the original algorithm and make the appropriate changes to improve its anti-interference ability and accuracy. Use matlab to improved simulation algorithm to verify its feasibility. This method is simple, with high practical value of the project.
出处
《科技广场》
2009年第5期54-57,共4页
Science Mosaic
关键词
移频信号
测宽法
MATLAB仿真
Frequency Shift Signal
Measuring the Width of Waveform
Matlab Simulation
