1) ultra low sidelobe antenna
超低副瓣天线
1.
With a two dimensional problem as an example, the effect of scattering from wall of anechoic chamber on planar near field measurements with ultra low sidelobe antennas is studied by means of computer simulation based on theory of plane wave spectrum expansion and approximation in geometrical optics.
以二维问题为例 ,基于平面波谱展开理论和几何光学近似 ,利用计算机模拟的方法研究了暗室墙壁散射对超低副瓣天线平面近场测量的影响 ,得到了一些基本的规律和有用的结
2.
The effect of finite scanning plane on ultra low sidelobe antenna planar near field measurements is studied by the method of computer simulation, with some basic laws obtained.
给出了平面近场测量中由于有限扫描面截断所引起的远场相对误差的表达式以及扫描面宽度选择原则 ,用计算机模拟的方法研究了有限扫描面对超低副瓣天线平面近场测量结果的影响 ,得到了一些基本的规律 ,并证实了扫描面宽度选择原则对于超低副瓣天线平面近场测量的适用性和正确性 。
4) low-sidelobe antenna array
低副瓣天线阵
5) ultra-low sidelobe
超低副瓣
1.
This article presents dominant anti-jamming techniques used for selection of waveforms,ultra-low sidelobe forming and adaptive nulling in digital array radar,explains the method to achieve these goals,and gives out the results of simulations and performance tests.
文章给出数字阵列雷达在波形选择、接收超低副瓣形成以及自适应零点形成技术等方面的主要抗干扰技术,阐述实现方法,并给出仿真和性能测试结果。
2.
Aimed at large linear arrays, combined with DBF, how to control the sidelobe altitude of the adaptive pattern and to realize the ultra-low sidelobe performance of the array.
除了对抗有源干扰外,大部分雷达还要求具有强杂波背景下检测目标的能力,这就需要雷达天线具有低或超低副瓣电平。
3.
Modern electronic warfare has set higher demands for the low or ultra-low sidelobe antennas, which are key components of modern Radar.
超低副瓣阵列天线是实现现代高性能雷达的关键技术之一。
6) antenna sidelobe
天线副瓣
1.
The influence of the antenna sidelobe on the ground clutter received by airborne pulsed doppler radar is analyzed by computer simulation and experimental data.
用计算机仿真和实验测试数据分析了天线副瓣对机载脉冲多普勒雷达地杂波的影响。
2.
This paper analyses the influence of the AEW radar antenna sidelobe on the sys- tem improvement factor and presents the relatlonship between the system improvement factor and the antenna sidelobe.
通过理论推导，详细分析了机载预警雷达天线副瓣对雷达系统改善因子的影响，给出了天线副瓣与系统改善因子的关系式，估算了系统在不同天线副瓣和不同脉冲重复频率假设条件下的改善因子。
3.
The exact signal-to-clutter model including antenna sidelobe effect is presented in this paper.
为了分析强地物回波产生副瓣干扰,根据毫米波雷达制导系统的实际需求,提出了考虑天线副瓣杂波影响的精确的信杂比模型,并通过仿真计算得到了考虑副瓣影响的雷达的最佳搜索角。
补充资料：超低旁瓣
为了增强现代舰用天线系统的抗干扰能力,必须提高天线旁瓣的测量精度.
基于此给出了用平面近场技术测量超低旁瓣天线时,旁瓣测量总误差与待测天线参数、近场幅相随机误差的数学模型:在相同的测量条件下,天线旁瓣越低,旁瓣测量误差越大;
旁瓣测量总误差随着近场测量幅相误差的增大而增大;近场分布的口径效率与旁瓣电平的误差方差成反比.
建立了近场幅相随机误差所引起的误差谱的表达式.对随机误差对远场方向图的影响进行了计算机仿真验证:结果表明,幅相误差主要影响远场方向图的旁瓣;该验证方法首次采用阵元数较少的线阵,仿真效果接近采用多阵元平面阵的情况.
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条