Analysis about Impact of Unlform Linear Array Defect on Beam Pattern 均匀线阵阵元缺损对波束方向图影响的分析
Beam pattern null in the direction of jamming is formed by space filtering and assistant receive channels to restrain the jamming. 它采用空间滤波技术,通过辅助接收通道在干扰方向形成波束图的零点,实现对干扰信号的抑制。
Array Antennas Beam Pattern Synthesis Based on Neighborhood Particle Swarm Optimization 基于近邻粒子群优化的阵列天线方向图综合
Simulation for Beam Pattern of Smart Antenna Based on MATLAB 基于MATLAB的智能天线波束方向图仿真
The improvement of the aperiodic array's beam pattern made by the spectral decomposition method is analyzed. 为配合新一代三维视觉声纳的开发,研究了谱分解波束形成方法。
The principle of wide-band scanning was analyzed, the linear beam pattern for laser wide-band was proposed, its transfer heat model was presented to calculate the temperature distributions. 分析了扫描原理,提出了线光斑宽带方案及传热模型,并计算了其温度场。
However, in concrete application, there exist errors between the real and ideal signal environment, which can cause performance degradation in adaptive beam pattern. 然而,在具体应用中,实际信号环境和理想信号环境之间存在误差,会造成自适应波束性能下降。
The radiation directivity of a complicated conformal array of underwater acoustic transducers is presented based on the boundary element method. It includes the element directivity of each transducer, the natural beam pattern and the controlled beam pattern of the transducer array. 用边界元方法,给出了水声发射换能器共形阵各阵元的单元指向性以及基阵的自然波束指向性和束控波束指向性。
The boundary element theory together with optimization method is used to calculate the vibration velocity weighting vector of a complicated conformal array of underwater acoustic projecting transducers for an expected beam pattern. 用边界元理论结合优化方法计算了水声发射换能器共形阵在期望辐射方向性下的振速加权向量,提出了振速的2种加权方式,并给出了计算实例。
Study of laser beam pattern for a wide-band laser heat treatment 激光热处理宽带光斑的研究
Based on adaptive technique, a design method for broadband array with frequency invariant beam pattern is presented. 提出一种具有频率不变波束图的宽带基阵设计方法。
A Study on Adaptive Array Antenna Beam Pattern Performance 自适应阵列天线波束方向增益特性的研究
An adaptive weighting algorithm is proposed based on the adaptive null beamforming technology, which can be used for forming arbitrary sidelobe shape beam pattern for arbitrary structure arrays, considering the effect of element directivity at the same time. 在自适应零陷形成的基础上,提出了一种自适应加权算法,用于任意阵型阵列构成具有任意形状旁瓣的波束图,并考虑基元方向性对波束图的影响。
An efficient method to determine the diagonal loading value is introduced in this paper, it can be seen from the result of simulation that this method can lower the height of adaptive beam pattern, and has no effect on nulling depth of the interference. 本文介绍了一种确定对角加载值的有效方法,仿真结果表明,此方法能有效地降低自适应波束副瓣高度,而且不会对干扰零深产生影响。
Design of broadband array with frequency invariant beam pattern by using DFT interpolation method is presented in this paper. 本文提出一种基于DFT插值的宽带波束形成器设计方法。
Adaptive array is widely used in radar and communication system, the simplest means to test the performance of the adaptive array system is to inspect the adaptive beam pattern. 自适应阵列在雷达和通信系统中有着广泛的应用,检验自适应阵列系统的性能,以考察自适应波束图最为简单。
Computer simulation results show the relationship between the beam pattern and the direction of arrivals, and the optimal length of training sequence required by the pattern convergence is discovered. 计算机仿真结果表明了波束形成与接收信号到达角度之间的联系,发现了波束收敛所需训练序列的最佳长度。
It is shown that fluctuation causes broadening or even distortion of the mean square inverse beam pattern. 结果表明,起伏一般使均方声束图案展宽以致畸变。
The beam forming about steering to the desired signal and suppressing to the interference signal is studied, and the relationship between the convergence property for beam pattern and the training sequence is analyzed. 研究了阵列波束对期望信号的增强和对干扰信号的抵消的形成过程,并分析了方向增益的收敛属性与训练序列的关系。
Firstly, relationships between weights of a discrete sensor array and sensitivity distribution of a continuous linear array, which has a property of frequency invariant beam pattern, are derived. 首先推导了具有频率不变波束图的连续线阵的灵敏度函数与离散线列阵加权系数之间的关系;
The statistical characteristics of the laser log-intensity fluctuation and beam pattern in a turbulent atmosphere were studied systematically. 我们系统地研究了激光在湍流大气中的光强起伏与光斑统计特征。
Analysis for Laser Beam Pattern of Wide Band Scanning Mirror 激光转镜扫描光束的优化和光斑特性分析
Discuss methods of channel calibration, DBF and beam pattern evaluation in detail. 具体讨论了通道校准、数字波束的形成和方向图效果评估的方法。
We can calculate the sum-and-difference beam pattern of main array first, and then get the adaptive weighted coefficients of auxiliary array. according to jamming angle through adaptive algorithms, and finally perform cancellation to obtain The sum-and-difference beam pattern. 对于旁瓣对消系统,可以先得到主阵的和差波束,然后根据干扰方向通过自适应算法求得辅阵的自适应权,最后主辅天线对消得到阵列的和差波束方向图。
By studying on the model of Antenna Pattern, this paper simulated the single and sum-difference beam pattern of phased-array radar which works on single pulse angle measuring. 然后介绍了相控阵雷达天线方向图模型,仿真了测角体制相控阵雷达天线单波束以及和差波束方向图。
Moreover, the tapering aperture function in traditional array is refered in order to improve beam pattern performances. Finally, chapter five summarizes the works in this article and outlines the future research directions of MIMO radar array design. 此外,把传统阵列中锥形孔径函数的设计方法借鉴到MIMO雷达中达到了改善方向图性能的目的。第五章最后对本文的工作进行了总结并概括了MIMO雷达阵列设计未来的研究方向。
On this basis, MIMO radar matched filtering and beamforming processing structure is studied and the beam pattern formula is derived. 在此基础上,着重分析了MIMO雷达的匹配滤波和波束形成处理结构,导出了波束方向图公式。
Based on the study of the near-field beam pattern, a new energy function is brought forward for near-field array optimization according to practical engineering applications. 基于对近场波束方向图表达式的分析,该方法提出了一种与实际工程应用相一致的近场能量函数。