适用于MIMO雷达的地址码设计

发布时间：2018-07-10 03:23

本文选题：MIMO雷达 + 零相关区　；参考：《燕山大学》2016年硕士论文

【摘要】：零相关区序列偶集作为一种离散信号,在雷达,声纳,遥测遥控等系统中有着广泛的工程应用前景。零相关区序列偶集在几个码片周期内有理想的相关性能,是单一序列和序列偶的进一步扩展,序列的存在量要比理想序列多很多,可以为系统提供更多可以选择的地址码。本文在零相关区序列偶集已有成果的基础上,进行了进一步的理论研究,并且将其应用到了MIMO雷达中,取得了一些理论上的成果。首先,用两种方法构造得到非周期零相关区互补序列偶集。一种是基于最佳互补序列偶集,结合相关性良好的非周期序列,利用克罗内克积技术,构造非周期零相关区互补序列偶集的方法,并且同样适用于构造非周期零相关区互补序列偶。另一种是基于正交矩阵和规范正交矩阵偶通过交织技术,构造出具有灵活零相关区的非周期零相关区互补序列偶集,并且能够达到理论界限。其次,基于互补序列偶集的概念和雷达的模糊函数性质,推导了基于互补序列偶集的MIMO雷达模糊函数的表达式,并且在原MIMO雷达系统模型的基础上进行了改进。利用文本构造的非周期零相关区互补序列偶集,进行了计算机仿真,理论上验证了互补序列偶集在MIMO雷达中应用的可行性,结合零相关区互补序列偶集研究MIMO雷达,在有重大的理论意义的基础上更有重要的工程应用价值。最后,基于最佳的屏蔽序列偶,并且将移位序列和符号序列相结合,通过交织方法得到一类ZCZ周期屏蔽序列偶,通过选取合适长度的移位序列和符号序列,可以得到不同的ZCZ周期屏蔽序列偶并且可以使屏蔽序列偶的性能得到改善。
[Abstract]:As a discrete signal, the zero-correlation region sequence pair set has a wide range of engineering applications in radar, sonar, telemetry and remote control systems. The sequence pair set of zero correlation region has ideal correlation performance in several chip cycles, which is a further expansion of single sequence and sequence pair. The existence of sequence is much larger than that of ideal sequence, which can provide more optional address codes for the system. In this paper, based on the existing results of zero-correlation sequence pairs, further theoretical research is carried out, and it is applied to MIMO radar, and some theoretical results are obtained. Firstly, two methods are used to construct the complementary sequence pairs of aperiodic zero correlation region. One is based on the optimal complementary sequence pair set, combining with the aperiodic sequence with good correlation, using Croenecker product technique to construct the complementary sequence pair set of aperiodic zero correlation region. It is also suitable for constructing complementary sequence pairs of aperiodic zero correlation regions. The other is based on orthogonal matrix and normal orthogonal matrix pair by interleaving technique to construct a complementary sequence pair set of aperiodic zero correlation region with flexible zero correlation region and to reach the theoretical limit. Secondly, based on the concept of complementary sequence pair set and the property of radar ambiguity function, the expression of MIMO radar ambiguity function based on complementary sequence pair set is derived and improved on the basis of the original MIMO radar system model. Using the non-periodic zero-correlation region complementary sequence pair set constructed by the text, the computer simulation is carried out, and the feasibility of the complementary sequence pair set in MIMO radar is theoretically verified. The MIMO radar is studied by combining the zero-correlation region complementary sequence pair set. On the basis of great theoretical significance, it has more important engineering application value. Finally, based on the best shielded sequence pairs and combining shift sequence with symbol sequence, a class of ZCZ periodic shielded sequence pairs is obtained by interleaving method, and the shift sequence and symbol sequence of appropriate length are selected. Different ZCZ periodic shielded sequence pairs can be obtained and the performance of shielded sequence pairs can be improved.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN958

【相似文献】