ID 原文 译文
12954 在仿真中，采用功能强大的有限元方法模拟涂覆目标内部场，对于涂覆目标与粗糙面之间的多重耦合作用则通过边界积分方程方法进行考虑。 In the simulaion, the fields inside the coated target are modelled by powerful finite element method and the mult-interactions between the coated target and the rough surface are taken into account by boundary mter gral equation method.
12955 结合Monte-Carlo方法，数值计算了介质高斯粗糙面上方涂覆圆柱目标的电磁散射，分析了涂层材料介电常数、粗糙面粗糙度以及介质粗糙面介电常数变化对复合模型双站散射系数的影响。 Combined with the Monte-Carlo method, the scattering from a coated cylinder above a de- lectric Gaussian rough surface is numercally calculated and the influence of the relative permittivities of the coating, the roughness of the rough surface and the relaive pernlittivities of the rough surface on the bistaic scattering coefficient of the composite modll are analyzed.
12956 数值结果表明，相比于传统矩量法(method of moment, MoM)，本文方法虽然在处理理想导体模型时效率略低，但可以处理MoM难以处理的复杂媒质电磁散射问题，且计算精度较高。 The numercal results show that, compared with the traditional MoM, the efficiency of our method is slightly lower in dealing with the ideal conductor model. But our method can deal with the complex medum electromagnets scattering problem which MoM is difficult to deal with, and the cal- culaton accuracy is higher.
12957 海杂波是雷达在海洋表面采集到的海面电磁散射回波。 Sea clutter is the sea surface electromagnetic scattering echo collected by the radar on the ocean surface.
12958 受海洋环境要素（风速、风向、浪高、浪 向等）和雷达参数的影响，其幅度随时间具有随机起伏性，海杂波的幅度预测精度的提高有助于增加目标检测准确度。 Affected by mari ne env i ronmenta l factors(w i nd speed, wind direction, wave height, wave drecton, etc. ) and radar parameters, is amplitude has illuctuatons with time and the accuracy of sea clutter ampltude predcton helps to increase target detection accuracy.
12959 本文结合海杂波非高斯非线性的特点，提出了基于门控循环神经网络的海杂波幅度预测方法。 Combined with the non-Gaussan and non linearity characteristics of sea clutter, the sea clutter amplitude prediction method based on gated feedback recurrent neural network s proposed.
12960 通过对IPIX雷达和P波段雷达海杂波实测数据的预测分析，结果表明，本文方法相对已有传统方法具有更高的预测精度， Through the predcton analyss of the sea clutter data, the results showthat the proposed method has hgher predcton accuracy than the tradtonal predcton methods.
12961 针对机载有源相控阵雷达小型化、多功能、高功率的要求,研制了一款应用于C、X、Ku波段的双通道超宽带T/R砖块组件,外观尺寸为30.0 mmX70.0 mmX8 5 mm。 Aiming at the requirements of m i n i atur i zat i on, mult-function and h i gh power of ai rborne radar, a dual-channel ultra-wideband T/R module for multiband(C, X and Ku) is reported. Dimension of this T/R module is 30. 0 mmX70. 0 mmX8. 5 mm.
12962 组件在工作频带内可以实现6位移相、 6位衰减,工作带宽达到1" GHz,发射输出功率037 dBm，接收增益达到""dB.通过对电路中无源结构进行仿真，并利用得到的仿真结果和射频芯片实现链路仿真，解决了超宽带T/R组件端口驻波较差和接收增益平坦度差且难以预估的难题。 Six bit phase shift and 6 bit ampltude attenuation can be achieved at a working bandwidth of 1" GHz. At the same time, the transmit output power of the module is more than 37 dBm, and the receiving gain is "" dB. By simulating the passive structure in the circuit, the simulation results and S-parameter model of the RF chips are used for link simulation. The poor VSWR of the ultra-wideband TR module port is improved, and the problem that the receiving gain flatness is poor and difficult to predict is solved at the same time.
12963 该天线采用五边形谐振腔代替传统锥削槽天线的正方形谐振腔,在不占用有源电路面积的情况下,拓展了低频工作带宽；采用辐射板与馈电巴伦分离设计,在不影响天线电性能的前提下,极大地缩小了介质板尺寸以节约加工成本;天线加工成十字形结构以实现阵元间良好的电流连续性和不恶化天线的极化性能。 The T/R module has good performance, including ultra-wideband, low noise, high power output, good phase shift control and amp l i tude attenuat i on control.