国外舰载射频设备集成技术发展概况

  目的  为了兼顾新一代水面舰船射频舰载天线的高性能、低散射、与船体共形等综合要求，针对典型频段的嵌入式阵列天线，提出一种电磁仿真与智能优化算法相结合的设计方法。  方法  通过对传统粒子群优化算法（PSO）进行异步递进改进，实现离散变量和连续变量的同时处理，并有效加快PSO的收敛速度；针对水面舰船某VHF天线，构建复杂天线结构多尺寸参数优化的目标函数，得到天线增益、驻波比、雷达波散射截面积等多目标特性同步优化的半嵌入安装形式。  结果  经多轮仿真迭代优化，天线增益提高了1 dB左右，天线驻波比略有改善，典型方位的RCS峰值点的最大减缩量为32 dB。  结论  该方法可为舰船射频天线的共形装舰设计以及复杂大系统一体化设计提供参考。

Development of integrated technology for shipborne RF equipment abroad

  Objectives  In order to meet the different performance requirements of ship-based integrated RF antennae for next-generation surface warships, such as high performance, low scattering and hull conformance, an optimization method for a conformal antenna combining the electromagnetic simulation and intelligent optimization methods is presented and applied in the design of an embedded array with a specific frequency band.  Methods  By improving the traditional particle swarm optimization (PSO) algorithm asynchronously and incrementally, discrete variables and continuous variables are processed at the same time, effectively accelerating the convergence speed of the PSO. Aiming at a VHF antenna on a surface ship, the objective function of the multi-dimensional parameter optimization of the complex antenna structure is constructed, and the semi-embedded installation forms of the synchronous optimization of multi-objective characteristics such as antenna gain, standing wave ratio and radar cross section （RCS） are obtained.   Results  After several rounds of simulation and iterative optimization, the antenna gain is increased by about 1 dB, the standing wave ratio is slightly improved and the RCS peak point reduction of the typical azimuth reaches 32 dB.  Conclusions  This method can provide references for the conformal ship mounting design of RF antennae for ships and the integrated design of complex large-scale systems.