对偶序列跳频系统的干扰能量检测方法  

Interference Energy Detection Method for Dual Sequence Frequency Hopping System

作　　者：孟庆斌 全厚德 雷鹏娟 MENG Qingbin;QUAN Houde;LEI Pengjuan(Shijiazhuang Campus, Army Engineering University, Shijiazhuang 050003,China;China Hebei Petroleum Vocational and Technical University, Chengde 067000,China)

机构地区：[1]陆军工程大学石家庄校区电子与光学工程系,河北石家庄050003 [2]河北石油职业技术大学电气与电子系,河北承德067000

出　　处：《探测与控制学报》2022年第2期73-78,84,共7页Journal of Detection & Control

基　　金：军队科研项目资助(20202C020390)。

摘　　要：针对目前没有从干扰能量检测角度适配对偶序列跳频系统的问题,提出对偶序列跳频通信的干扰信号能量检测方法。该方法利用频谱感知技术中的能量检测方法感知主用户信号信息,将干扰信号视为主用户信号并提出对干扰信号进行二元假设的能量检测,此外,充分利用对偶序列跳频系统的双信道进行能量检测接收,检测效果比单信道较好。仿真实验结果表明,对偶序列跳频系统在高斯信道环境下仿真的误码率与理论推导一致;在单跳信号的不同类型干扰下,干噪比达到-9 dB时,检测成功概率可达99%;该方法针对单音干扰检测性能,当干噪比等于-9 dB时,检测成功概率大于90%,虚警概率小于0.1;在虚警概率为0.1时,检测点数越多,检测成功概率越高;对偶序列跳频系统的双信道接收检测时长是单信道检测的1/2;若考虑单音干扰在全部信道下,则虚警概率为0.001时,单音干扰信号占比越低,检测成功概率越高。Aiming at the problem that the dual sequence frequency hopping system was not adapted to the perspective of interference energy detection,an interference signal energy detection method for dual sequence frequency hopping communication was proposed.This method used the energy detection method in the spectrum sensing technology to perceive the signal information of the primary user,the interference signal was treated as the primary user signal,which made a binary hypothesis for the interference signal.In addition,it made full use of the dual sequence frequency hopping system.The channel was used for energy detection and reception,and the detection effect was better than that of a single channel.Simulation results showed that the bit error rate of the dual sequence frequency hopping system in the Gaussian channel environment was consistent with the theoretical derivation;when the interference-to-noise ratio reached-9 dB under the interference of different types of single-hop signals,the probability of successful detection could be up to 99%.When the interference-to-noise ratio was equal to-9 dB,the detection success probability was greater than 90%,and the false alarm probability was less than 0.1;when the false alarm probability was 0.1,the more detection points,the higher the probability of success;the dual-channel reception detection time of the dual-sequence frequency hopping system was 1/2 of the single-channel detection;if single-tone interference was considered in all channels,the false alarm probability was 0.001,the greater the proportion of single-tone interference signals low,the higher the probability of successful detection.

关 键 词：对偶序列跳频 检测算法 干扰检测性能 

分 类 号：TN914[电子电信—通信与信息系统]