Several methods of sharp a narrow beamwidth is presented and used to form a narrow directivity.
文章还提出了多种矢量水听器指向性锐化的方法，通过这些方法在低频形成恒定束宽窄指向性。
It is the key technology for design of the constant beamwidth array to calculate the weight matrix.
恒定束宽加权矩阵的获得方法是设计此类声纳基阵的技术关键。
With the aid of a computer, curves of beamwidth and side lobe versus the antenna parameters are plotted.
并借助计算机绘出了主瓣宽度和副瓣电平与天线主要参数的关系曲线；
Adopting this plan, it needs not to change beamwidth and there needs no common optical sys-tem for receiving and transmitting.
此方案无须要求通信系统具有能实现宽窄波束变换的光学系统，也不用预先解决收发天线共用的问题。
The broad beamwidth transducer is one of the most important key technologies of underwater detecting and communication system.
水声信号的宽波束发射技术是水声探测、通讯中重要的关键技术之一。
A long baseline with narrower beamwidth can also be provided by distributed space-based radars at the cost of appearing grating lobes.
突破了单星雷达受天线基线长度的限制，具有更窄的波束宽度，但是会产生较多的孔径干涉栅瓣。
A high resolution DOA estimation method for coherent wide band sources based on outputs of constant beamwidth beams is proposed in this paper.
本文给出了基于恒定束宽波束输出的宽带相干源高分辨测向方法。
Three key parameters, namely beamwidth, directivity and maximum sidelobe level, are drawn versus the distance between field points and the center of aperture.
采用口径场绕射积分求取了天线的近场及远场方向图，绘制了波束宽度、方向性和最大副瓣电平三个关键参数随场点距离的关系曲线。
Projection data is obtained from an integration of the reflectivity coefficients of the objects along the circular arc of the wavefront with a radar beamwidth.
反射数据实际上是反射特征系数沿着具有一定雷达波束宽度的波阵面圆弧的积分。
The complex weighting vectors at other frequencies satisfying the request of wideband constant beamwidth can be deduced from the one at the reference frequency.
其它频率点上满足宽带恒定束宽要求的复权向量可以根据参考频率上的复数权值通过折算求得。
Here a scheme to implement broad-band constant beamwidth digital beam-former has been presented. The results of computer simulation show the scheme is effective.
本文给出了一种宽带恒定束宽数字波束形成器的实现方案，计算机仿真结果表明了该方案的有效性。
Numerical results show that the effect of metallization thickness is smaller on the direction of main beam and very noticeable on the beamwidth and aperture efficiency.
数值结果表明，金属栅厚度对漏波天线波求方向影响较小，但对漏波天线的辐射效率和波束宽度有明显的影响。
As the sound field of coaxial enclosure is stable in all directions and entire frequency spectrum, all listeners can be covered at an even sonic performance within a beamwidth.
同轴音箱所及声场在各方向和声谱上稳定的，所覆盖的听众均可在相同波束宽度内获得均衡的音响效果。
Experimented on the equally spaced line array, the experimental results show that the theoretical values of the beamwidth are well consistent with that obtained in the experiments.
以均匀间距线列阵作了实验验证，波束宽度理论值和测量值一致性较好。
The big difference between measured and theoretic manifold of the circular array showed that the broadband constant beamwidth beamforming method used in the paper has good tolerance.
实验圆阵的实测阵列流形和理论阵列流形存在较大误差，这表明该文采用的可适用于任意结构阵列的宽带恒定束宽波束形成方法具有良好的宽容性。
The one-dimensional phased array antenna discussed in this paper needs to radiate a narrow beamwidth and low sidelobe pattern on the horizontal, a sum and difference beam on the vertical.
所设计的一维扫描相控阵天线在方位面具有窄波束、低副瓣特性，在俯仰面实现和差波束。
Sandwich transducer with composite horn combines the advantage of high power of sandwich transducer and the benefits of broad beamwidth of piston like transducer with small emitting area.
夹心式复合变幅杆换能器结合了夹心式换能器的大功率容量和小尺寸活塞换能器波束宽度大的特点，因此该换能器同时兼有宽波束和高发射响应的优点。
In this paper, the algorithm of wideband constant beamwidth digital beamforming is studied, and the implementation of digital beamforming system in wideband digital array radar is discussed.
本文结合工程的实际需求，对宽带恒定束宽波束形成的算法进行研究，并详细讨论了宽带数字阵列雷达中数字波束形成系统的工程实现问题。
By using the aperture synthetic wideband beamforming algorithm, the theory of designing the conventional filter is improved, and a wideband constant beamwidth is reached in the appointed bandwidth.
采用子阵合成式宽带波束形成方法，改进常规滤波器设计原理，使其可以在规定的带宽范围内获得一致的基阵指向性。
In this paper, a multi-beam broadband constant beamwidth beam former system is proposed using TMS320F206 and IMSA100 as main chips to realize the beam forming procedure in real time with high speed.
文章提出来用TMS320F 206及IMSA100为主要芯片，构成多波束宽恒定束宽波束形成器，可实现实时、高速、高性能的多波束宽带恒定束宽波束形成，并给出了具体设计方案。
In this paper, a multi-beam broadband constant beamwidth beam former system is proposed using TMS320F206 and IMSA100 as main chips to realize the beam forming procedure in real time with high speed.
文章提出来用TMS320F 206及IMSA100为主要芯片，构成多波束宽恒定束宽波束形成器，可实现实时、高速、高性能的多波束宽带恒定束宽波束形成，并给出了具体设计方案。
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