基于CAZAC序列的动态等离子鞘套信道探测方法  

Detection Method of Dynamic Plasma Sheath Channel Based on CAZAC Sequence

作　　者：刘小彤 LIU Xiao-tong(The 20th Research Institute of CETC,Xi’an 710068,China)

机构地区：[1]中国电子科技集团公司第二十研究所,陕西西安710068

出　　处：《舰船电子对抗》2020年第3期65-70,80,共7页Shipboard Electronic Countermeasure

摘　　要：针对动态等离子鞘套信道特性探测需求,提出了一种基于恒包络零自相关(CAZAC)序列的时域循环滑动相关信道测量方法,并对该方法在地面做了试验验证。该方法利用CAZAC序列优良的自相关特性和增益特性,实现了等离子鞘套环境下低信噪比的动态时变信道探测。理论仿真表明可实现-20 dB下200 kHz时变信道探测。同时在射频调制放电等离子体装置开展了信道探测试验,试验结果表明了该方法能有效地提取动态等离子鞘套环境的信道参数。Aiming at the detection requirements of dynamic plasma sheath channel characteristics,this paper proposes a channel measurement method of time-domain cycle slipping correlation based on constant amplitude zero auto-correlation(CAZAC)sequence,and verifies the method through experiments on the ground.The method utilizes excellent autocorrelation and gain characteristic of CAZAC sequence to realize the dynamic time-varying channel detection under low signal-to-noise ratio in the plasma sheath environment.The theoretical simulation results show that the 200 kHz time-varying channel detection under-20 dB can be realized.The channel detection experiments are carried out in the radio frequency(RF)modulation discharge plasma device as well.The experimental results show that the method can effectively extract the channel parameters of the dynamic plasma sheath environment.

关 键 词：信道探测 动态等离子体 CAZAC序列 循环滑动相关 

分 类 号：TN911[电子电信—通信与信息系统]