关键词: 测控通信, 伪码捕获, 傅里叶变换(FFT), 扩频

Abstract:

With the ever higher requirements for data confidentiality in the field of measurement and control,the length of the pseudo-code for spreading selection is also increasing,and the general method of pseudo-yard catch has failed to meet the system real-time requirements.The traditional pseudonoise code acquisition method is discussed with its advantages and disadvantages pointed out.A fast Fourier transform-based pseudo-code in the frequency domain acquisition method is employed to meet the requirements for real-time acquisition of long PN code in the monitoring and control communication system.Simulation results verify the effectiveness of the method.

Key words: measurement and control communication;pseudonoise code acquisition;fast fourier transform;spread spectrum