main lobe
英 [meɪn ləʊb]
美 [meɪn loʊb]
主瓣
双语例句
- Based on uniform line array, the sonar equation of active sonar beam main lobe and side lobe interfered by noise-jammer are presented.
研究了噪声干扰器对鱼雷主动声呐的对抗原理，以等间隔直线阵为例，分别给出了干扰器对鱼雷主动声呐主瓣和旁瓣的干扰方程。 - Adaptive Broadband Beamforming of Circular Array Under Main Lobe Interference Condition
主瓣干扰下宽带圆阵自适应波束形成方法 - This method more effectively suppresses spatial nonstationary and stationary noise than the adaptive null-forming beamformer method by using a rotatable main lobe in the2-D plane.
该方法克服了自适应零限波束形成只能抑制空间相干噪声的缺点，并得到可在二维平面上旋转的波束主瓣。 - The weighed FFT ( WFFT) can suppress the side lobe but decrease the SNR in main lobe.
利用加窗FFT可以抑制副瓣，但降低了主瓣信噪比。 - The direction of acoustic beam and angular width of main lobe can be changed by properly amplitude-weighting, decreasing the frequency of impulsive signal and adjusting the interval of array elements.
通过适当的幅度加权、降低激励信号的频率、调整阵元的间距等措施可以改变辐射声束的方向和辐射主瓣的角宽。 - Directivity and main lobe width were compared for the linear phased array acoustic transmitters with amplitude weighting and non-amplitude weighting using numerical examples. angle.
通过数值计算对比分析了均匀幅度加权和不同幅加权条件下相控线阵声波辐射器的指向性以及辐射声束角宽的差异。 - Robust Adaptive Beam Forming Under Main Lobe Interference Conditions
一种在主瓣干扰条件下稳健的自适应波束形成方法 - In order to get high gain, narrow main lobe and low sub-lobe antenna pattern, we synthetize the array pattern with Chebyshev method and Unconstrained method seperately.
本文分别采用切比雪夫综合方法和闭式综合法，对直线阵和圆环阵进厅综合，以求得到增益相对高、主瓣窄，副瓣电平低的阵列方向图。 - At last this paper points out that precision of test can be improved by enhancing reflection level of quiet-zone, and researches the relation of reflection level, precision of test and main lobe of testing radar.
最后指出可以通过提高静区静度指标要求到达提高试验精度的目的，并研究了静区指标与被试品主瓣宽度、角模拟精度之间的关系。 - This paper presents a method of using the windows function to design FIR digital filter. The finite length unit pulse series can be assured according to filter technical indexes, to make sure the filter has the most narrow width main lobe and the smallest side lobe.
介绍了利用窗函数设计FIR滤波器的方法，即根据给定的滤波器技术指标，确定有限长单位脉冲序列，通过选择滤波器的长度和窗函数，使其具有最窄宽度的主瓣和最小的旁瓣。 - This paper presents computer simulation models of amplitude modulation ( AM) noise of radar transmitter leakage and phase modulation ( PM) noise of clutter in main lobe, it gives a analysis of the effect of LO AM/ PM noise to the capability of radar detector.
分析了本振调相、调幅噪声对相参雷达系统探测性能的影响，给出了主杂波环境下雷达发射机调相噪声以及发射机泄漏的调幅噪声的数字仿真模型。 - By simulation results, it shows that the main lobe ofpattern can point to the direction of arrival of target user accurately, and the antenna pattern can minimize interfering signals actively.
仿真结果表明，天线方向图的主瓣能准确地指向目标用户的来波方向和主动抑制干扰信号。 - Doppler frequency domain one-dimension adaptive filtering, which usually used in main lobe clutter suppression.
频域一维滤波主要考虑主杂波的抑制。 - Tg frequency modulation signal is widely used in the pulse compression radar currently, as it can be taken to solve the contradiction between the main lobe width and the side lobe level.
由于正切调频信号能很好地解决主瓣宽度与旁瓣电平高的矛盾，目前在脉冲压缩雷达中获得广泛的应用。 - The principle of two port clutter suppression interferometer is analyzed. The influence of system errors and noise on the capability for suppressing the main lobe clutter is also discussed.
分析了二端口杂波抑制干涉仪的工作原理，讨论了系统中的误差及噪声对主杂波抑制的影响。 - Through a new feeding construction with phase-shifter, the main lobe of the pattern of the microstrip leaky-wave antenna can scan at a fixed frequency.
通过控制微带漏波天线中部馈电端口移相器，成功实现了工作频率固定下微带漏波天线主波束扫描，并使用电子开关实现微带漏波天线主波束双向扫描。 - In addition, simulation results are given to show the effect of reject the main lobe interference on the sum and difference patterns.
另外，本文给出了为消除主瓣干扰而对和差方向图影响的模拟结果。 - However, the target and clutter within the same main lobe will have to split the main lobe. So oblique projection operator is introduced instead of the orthogonal weight vector.
但当目标和杂波位于同一主瓣内时将产生主瓣分裂，因此本文引入斜投影算子代替正交权矢量。 - Therefore, the correction of phase distortion has great significance on the focused beam, and the low-frequency phase of phase distortion determines the main lobe of focal spot.
因此，位相畸变的校正对光束聚焦具有重要的意义，其中位相畸变中的低频位相决定了焦斑的主瓣。 - Adaptive beam-forming technology can significantly improve the performance of the antenna array, it includes: quickly forms the main lobe in the goal directions, rapidly forms nulls in the disturbance directions, forms the ultra-low sidelobe, forms the multi-beam and so on.
自适应波束形成技术可以显著提高阵列天线的性能，这些性能包括：在目标方向快速形成主瓣，在干扰方向快速形成零陷，形成超低副瓣，自适应空分处理，多波束等等。 - The new algorithm does not appear to split the main lobe. It can realize signal detection and clutter suppression at the same time. The peak of power spectrum can be used as the DOA estimation of the target signal.
该算法不会出现主瓣分裂问题，在抑制杂波实现信号检测的同时，功率谱的峰值可以作为对目标信号的DOA估计。 - To satisfy engineering needs, it is required that array antennas have narrow main lobe and low side lobe to improve spatial resolution and anti-interference performance of many systems, such as radar.
为了满足工程需要，阵列天线要有窄的主瓣和低的副瓣以提高雷达等系统的空间分辨率和抗干扰性能。 - Compared with unite antennas, array antennas have the characteristics of beamforming, main lobe scan and low sidelobe in radio systems.
与单元天线相比，阵列天线可以满足无线电系统中波束赋形、主瓣电扫描、低副瓣等特性要求。 - This paper applies the method to multi-frequency signal adaptive beamforming, and illustrates the effectiveness of this method in suppressing the main lobe interference for multi-frequency signal using simulation.
本文将该法应用于多频信号自适应波束形成方法中，最后通过仿真验证，说明了该方法抑制多频信号主瓣干扰的有效性。 - Analyzes the echo characteristics of airborne radars in detail and constructs the airborne radar main lobe echo mode! for low PRF.
一2.对机载雷达回彼谱特性进行了深人的分析，建立了较完备和逼真的低脉冲重复频率机载雷达主波束回波模型，并设计了回波模拟程序。 - In beamforming, the two algorithm of this article can form a main lobe in the direction of desired signals, generate null in the direction of undesired signals, have a better inhibition to the interference signals.
在波束形成中，本论文的两种算法都可以在期望信号方向形成主瓣，在干扰信号方向产生零陷，能够对干扰信号有较好的抑制作用。 - As an example, the scanning property of a large array antenna in the presence of a radome is analyzed and some parameters are calculated, such as the attenuation of the main lobe and the boresight error.
对某大型阵列天线在天线罩内的扫描特性进行了分析，给出了在天线罩影响下天线的主瓣衰减及瞄准误差等特性。 - Conventional airborne radar clutter suppression techniques utilize the difference in Doppler frequency domain between clutter and target returns to suppress clutter, i.e. Doppler frequency domain one-dimension adaptive filtering, which usually used in main lobe clutter suppression.
传统的机载雷达地杂波抑制方法采用多普勒频域一维自适应滤波，即利用杂波和目标信号回波在多普勒频域上的差别对杂波进行抑制。频域一维滤波主要考虑主杂波的抑制。 - The results show that the resonance-type MPCs can improve the characteristics of the antennas and antenna arrays. The profile of the antenna can be reduced, the gain of main lobe has addition and the radiation level of back/ side lobes decrease.
研究表明，谐振型微波光子晶体的引入可以有效的改善天线和天线阵列的特性，主要体现在可以减小天线剖面尺寸、提高主瓣增益及降低后向和侧向辐射电平上。 - Due to phase continuity and constant modulus, CPM signals exhibit a narrow spectral main lobe and low side lobes, and allow nonlinear power amplifiers to operate efficiently.
因为具有相位连续和恒包络的特征，CPM信号在频谱上表现为一个很窄的主瓣，和数个快速滚降的旁瓣，这使得信号可以有效的使用非线性功率放大器。