1) side beam
副波束
2) Ultra-low Sidelobe Beam-forming
超低副瓣波束形成
3) minor lobe
副波
4) beam
[英][bi:m] [美][bim]
波束
1.
High resolution bearing estimation for coherent wide band sources based on outputs of constant beamwidth beams;
基于恒定束宽波束输出的宽带相干源高分辨测向
2.
Based on the relationship among direction accuracy,beam width and signal noise ratio,this paper makes a theoretical emulation.
在研究波束比幅法测向原理的基础上,详尽分析了波束比幅法测向误差,推导出了测向误差公式,并根据测向精度、波束宽度和信噪比之间的关系,进行了理论仿真,为工程应用提供了理论依据。
3.
The Intelligent antenna, which adopts the digital signal processing technology to perform directional beam, able to effectively adjust the its parameters on the basis of electromagnetic environment, restraining interference, increasing the gain and extending the system capacity.
采用数字信号处理技术形成定向波束的智能天线 ,能够根据所处的电磁环境 ,智能地调节自身参数 ,从而抑制干扰、提高天线增益、扩展通信容量。
5) subcarrier
[英]['sʌb'kæriə] [美]['sʌb,kæriɚ]
副载波
1.
In the paper,LOC modulation was analyzed in several aspects such as subcarrier waveform,power spectral density and autocorrelation function and spectrum,it was showed that cosine subcarrier signal was quite different from sine subcarrier signal.
文中着重讨论伽利略卫星导航系统中采用的LOC调制技术,对LOC信号的基本特性作具体分析,提出副载波调制指数为奇数时应采用正弦类型的LOC信号,副载波调制指数为偶数时应采用余弦类型的信号。
2.
According to these results,the principle for choosing Walsh subcarrier are proposed.
依据这个结果，提出了选择Ｗａｌｓｈ副载波的原则。
3.
The subcarrier generation circuit is very important constituent in the video process system.
副载波产生电路是视频处理系统的重要组成部分。
6) sub-carriers
副载波
1.
And then zero-partition is put forward to make sure the number of sub-carriers.
针对卫星测控通信信息侦察中测控信号识别的问题,提出一种基于小波分析的测控信号副载波识别算法。
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