卫星信道高动态时延与多普勒模拟系统的研究与设计  

Satellite Channel High Dynamic Delay and Doppler Simulation System

作　　者：鲍大志 邢斯瑞 刁国影 陈悦 BAO Dazhi;XING Sirui;DIAO Guoying;CHEN Yue(Chang Guang Satellite Technology Co. Ltd. , Changchun 130102, China)

机构地区：[1]长光卫星技术有限公司,吉林长春130102

出　　处：《测试技术学报》2021年第3期266-271,共6页Journal of Test and Measurement Technology

摘　　要：本文利用大规模存储器实现大范围时延模拟,基于可变分数时延滤波器实现精确的时延控制,通过数字变频实现对多普勒特性的模拟.同时,设计了一种控制算法,实现对信号多普勒和时延特性的动态实时控制.最后,通过测距信号收发系统验证了系统大范围时延模拟能力;利用扩频信号收发系统验证了系统对多普勒与时延的动态实时模拟能力.In this paper,mass memory is used to realize wide range time delay simulation,accurate time delay control is realized based on variable fraction delay filter,and doppler frequency shift is simulated by digital frequency conversion.A control algorithm is designed to realize the real-time control of doppler frequency shift and time delay.Finally,the wide range time delay simulation capability of the system is verified by the ranging transceiver system.The real-time simulation capability of doppler frequency shift and time delay is verified by spread spectrum transceiver system.

关 键 词：信道模拟 高动态 时延 多普勒 

分 类 号：TN927[电子电信—通信与信息系统] V55[电子电信—信息与通信工程]