水面舰船单鞭天线辐射特性及安装布局的研究

发布时间：2018-01-16 00:36

本文关键词：水面舰船单鞭天线辐射特性及安装布局的研究　出处：《华中科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：短波天线是舰船通信天线研究的重点,传统的短波天线尺寸太大,而短波单鞭天线具有外形轻巧、匹配性能优良以及增益较高的优点,因此成为短波天线研究的重点。随着水面舰船通信的发展,舰船上的电子设备、通信天线越来越多,而舰船上物理空间有限、电磁环境拥挤,除了要保证各个电子设备和天线能单独高性能工作,还要降低它们相互之间的耦合和干扰。因此研究单鞭天线在舰船布局是很有必要的。本文首先推导了理想地面上单鞭天线的辐射特性和表征单鞭天线性能的主要参数,仿真了上层建筑对单鞭天线辐射特性的影响,得出了上层建筑对单鞭天线的全向性的影响的结论。然后根据实际应用环境,对单鞭天线的近场进行了仿真分析,得出了近场的分布规律图。仿真了多天线隔离度的问题,得出了在天线隔离度小于30dB的限定条件下,十米单鞭天线间隔距离。最后,模拟了舰船舱室模型,对舱室内电磁环境进行了仿真计算,通过GJB151A中规定的甲板下方极限电平敏感值的制约条件,得出了舰船甲板上单鞭天线数量、天线到舱室距离以及天线发射功率的参考值;分析了大功率单鞭天线在舰船环境下对舱室内场强的影响,为单鞭天线合理布局提供了理论依据。
[Abstract]:Shortwave antenna is the focus of ship communication antenna research. The traditional shortwave antenna is too large in size, while the short-wave single-whip antenna has the advantages of light shape, good matching performance and high gain. With the development of ship communication, there are more and more electronic equipments and communication antennas on the ship, and the physical space on the ship is limited, and the electromagnetic environment is crowded. In addition to ensuring that each electronic device and antenna can work independently of high performance. Therefore, it is necessary to study the layout of single whip antenna in warships. Firstly, the radiation characteristics of single whip antenna on ideal ground and the main performance of single whip antenna are derived in this paper. Parameters. The influence of superstructure on the radiation characteristics of single whip antenna is simulated, and the conclusion of the influence of superstructure on the omnidirectional characteristic of single whip antenna is obtained. Then, according to the practical application environment, the near field of single whip antenna is simulated and analyzed. The distribution pattern of near field is obtained. The problem of isolation degree of multiple antennas is simulated. Under the limited condition of antenna isolation degree less than 30dB, the distance between 10 meters single whip antenna is obtained. Finally. The ship compartment model is simulated and the electromagnetic environment in the cabin is simulated and calculated. The limit level sensitivity condition under the deck specified in GJB151A is obtained. The number of single whip antennas on ship deck, the distance from antenna to cabin and the reference value of antenna transmitting power are obtained. The influence of high power single whip antenna on the field strength of cabin is analyzed, which provides a theoretical basis for the rational layout of single whip antenna.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U674.70

【参考文献】