应用于校射弹的伪随机码的生成  

Generation of pseudo-random codes applied to correction projectile

作　　者：谢海洋 杨新民 Xie Haiyang;Yang Xinmin(Nantional Key Laboratory of Transient Physics,Nanjing University of Science and Technology,Nanking 210094,China)

机构地区：[1]南京理工大学瞬态物理重点实验室

出　　处：《电子测量技术》2018年第18期66-70,共5页Electronic Measurement Technology

摘　　要：为实时获取校射弹的位置信息,需要将弹体的位置信息通过无线链路发送回来。为保证对整个炮群进行校射,至少同时需要32颗校射弹进行落点定位。为保证32颗弹的数据传输互不干扰,提出通过利用码分多址即对32颗校射弹加载不同的伪随机码来同时进行数据传输以此解决不同校射弹之间的通信干扰问题。通过MATLAB软件平台来找到m序列和Gold码的生成结构,并且对不同位数和不同结构的伪随机码进行了自相关性和互相关性仿真。仿真结果表明,m序列的自相关性优于Gold码,Gold码的互相关性与m序列基本相同,而Gold码所产生的最优的伪随机序列数量要远远超过相同位数的m序列产生的伪随机序列数量,为了获得更多的地址,最终选取1个10级最优m序列对异或产生的Gold码,从而解决了通信中如何区分不同弹体,具有较高的应用实现价值。To obtain the location information of the projectile in real time, the position information of the projectile needs to be sent back by wireless link. At least 32 projectiles are located at the same time to ensure the calibration of the whole group of guns. In order to ensure that the data transmission of 32 bullets is not interfered, this paper proposes the code division multiple access which loads different pseudo random code for data transmission into 32 projectiles at the same time to solve the problem of communication interference between different projectiles. The structure of m sequence and Gold code is founded by MATLAB, and the pseudo random code with different bits and structures are simulated by self-correlation and cross-correlation. The results show that the self-correlation of m sequence is better than Gold code while the cross-correlation of Gold code is superior to m sequence. The number of optimal pseudo random code produced by Gold codes is much higher than that of m sequence with the same number of bits. Finally, 32 Gold codes are selected from two pairs of 10 bits optimal m sequence, which solve the problem of distinguishing different projectiles in communication and has high application value.

关 键 词：校射弹 码分多址 M序列 GOLD码 

分 类 号：TN924[电子电信—通信与信息系统]