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文章给出了N个嵌套线列阵的宽频带恒定束宽的方向性图。The paper shows directivity pattern of N-octaves constant beamwidth.

除此之外，本文还对切比雪夫恒定束宽波束形成进行了仿真。After this, constant beamwidth beamforming by chebyshev-weighted method is also simulated.

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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。Several methods of sharp a narrow beamwidth is presented and used to form a narrow directivity.

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。It is the key technology for design of the constant beamwidth array to calculate the weight matrix.

这个信标器的波束宽度有限，如果弹体波束角超过了它，信号就会发生严重的衰减。The beacon will have a limited beamwidth and if the body-to- beam angle exceeds this a serious loss of signal will result.

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。Adopting this plan, it needs not to change beamwidth and there needs no common optical sys-tem for receiving and transmitting.

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 long baseline with narrower beamwidth can also be provided by distributed space-based radars at the cost of appearing grating lobes.

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对消声水池和冯家山水库采集的试验数据进行处理，对仿真结果做出分析。In chapter five, several narrow beamwidth processing arc performed using experimental data collected from lake and cistern experiment.

随着对矢量水听器认识的深入，开展基于矢量阵的恒定束宽波束形成器的研究越发变得必要。In the further study on the vector hydrophones, it is necessary to investigate the constant beamwidth beamforming using vector arrays.

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。A high resolution DOA estimation method for coherent wide band sources based on outputs of constant beamwidth beams is proposed in this paper.

在许多工程应用中，要求天线阵列有窄的扫描波束，以提高空间分辨率等技术指标。For many radar and communication applications of scanning array antennas, extreme narrow main beamwidth is required to improve the spatial resolution.

这个天线曾成功地用于一个超过几公里远的阻塞的通道，波束宽度相当狭窄，天线不引人注目。This antenna has been sucessfully used in an obstructed path link over a few kilometers. The beamwidth is fairly narrow and the antenna is low profile.

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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。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.

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。The complex weighting vectors at other frequencies satisfying the request of wideband constant beamwidth can be deduced from the one at the reference frequency.

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。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.

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。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.

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。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.

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对于前两种方法还提出了对宽带信号根据不同频率改变虚拟阵元数目的分子带处理技术以实现宽带恒定束宽的方法。For the first two methods broadband constant beamwidth for broadband signal had also been achieved by using different number of virtual elements in array processing technology.

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。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.

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 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.