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- antenna pattern footprint 天线覆盖图
- Accurate measurement of antenna pattern is important to spaceborne SAR image application, and distributed target antenna pattern measurement is widely concerned. 天线方向图的准确测量,对星载SAR图像的应用具有重要作用。 分布目标辐射定标在星载SAR天线方向图测试中受到广泛重视。
- It is convenient to measure the RCS, and the antenna pattern by this system having resolutions of both the turning angle of 1/36 degree and the echo signal voltage of 2.5mV. 该系统具有1/36度的转角分辨能力和2.;5mV的回波电压分辨能力;适用于目标RCS、天线方向性图等测量。
- A double population genetic algorithm (DPGA) is presented and applied to synthesize the array antenna pattern by controlling only the current amplitudes. 提出一种双种群遗传算法(DPGA)优化阵元电流幅度,以实现对阵列天线方向图的综合。
- The reasons are analyzed,and a modification method is presented, in which DSR controls antenna pattern used by transmitting node,part of packets are sent with omni-antenna and the others are sent with directional antenna. 分折了此现象产生原因,并提出了一个改进方法; 由DSR协议参与控制分组发送时使用的天线模式,对部分影响协议性能最为严重的分组采用全向发送,其余分组使用方向天线发送。
- In this paper some salient features and advantages of DAR are described,and some problems associated with space-time signal processing and antenna pattern are discussed,finally a self-cohering method using beamforming technique is introduced. 本文论述了它的一些突出特点和优点,讨论了空时信号处理与天线方向图的一些问题,最后介绍了利用自适应波束形成获得自相干的方法。
- However, the optimal results being a statistical average, the antenna pattern of random phasing is unsteady with the scanning angle and scanning period, so it is not easy to form the actually needed codes for control of the antenna scanning. 应用遗传算法对随机馈相方案进行优化，能有效抑制寄生副瓣的出现，形成扫描空域确定的波控代码，实现相控阵波束无惯性的精确指向。
- The thesis not only provided the Lagrange multiplier algorithm for designing the desample filter, but also the algorithm was designed to take account the effect of the antenna pattern of the SAR used in collecting the raw data. 论文不仅提出了使用拉格朗日乘子法对降采样滤波器的设计方法而且在设计中考虑了天线方向图的影响。
- Finally we use FR4 to fabricate the antenna and use the vector network analyzer to measure the reflect coefficient、antenna impedance and the antennas pattern in the chamber. 再以FR4板来实现并用网路分析仪来量测其反射系数与用无反射室实验室来量测天线的场形。
- Antenna pattern automatic recorder 天线波瓣自动记录仪
- automatic antenna pattern plotter 天线方向图自动测绘器
- The Analysis of an Airborne - antenna Pattern 机载天线的方向图分析
- Design on Antenna Pattern Automatic Measurement 天线方向图自动测试系统的设计
- Study of the Airborne Antenna Pattern 机载天线辐射方向图研究
- Antenna Pattern Loss Analysis of Bistatic Radar 双基地雷达天线方向图损失分析
- The GTD Method of the Antenna Pattern Calculation 计算天线方向性的GTD法
- automatic antenna pattern recorder 自支天线波瓣记录仪
- This cloth has a pattern of blue and white squares. 这种布有蓝白格子的图案。
- Reception improved because of the new antenna. 接受效果因有新天线而得到改善。
- The jammer and fuzes under test are physical models, while the antenna patterns of the jammer and fuzes, the trajectory, the space geometric disposal of ECCM field tests are in their mathematical models. 弹丸弹道、引信和干扰机的天线方向图、空间几何配置等为数学模型,由微机和有关接口构成混合仿真系统。
