天线阵

The correspondence relationship between sea echo's SNR azimuthal distribution and the array's effective...

验证了回波信噪比随方位角的分布同雷达天线阵有效视角的对应关系

Note that this represents a broadside array.

注意这被称为多列同相天线阵。

The results of experimental investigations of dimensions, high electrical strength, cardioid pattern with linear polarization of the pulse radiated are ideally adapted to be used as a steering antenna array element.

研制此天线利用了能量应用这种概念，其有小的尺寸，高的电场强度，线极化辐射脉冲的心形曲线图，并且完全适合作为扫描天线阵扫描单元。

Space Mapping Algorithm was extended to optimize conformal antenna array, and was used to optimize the radiation pattern for the first time.

将空间映射算法推广到共形天线阵的优化设计之中，并首次使用该方法对天线的方向图特性进行优化。

Based on the analysis, three single-port 1-dimension 5-element pattern reconfigurable Yagi patch antennas are designed.

在单端口馈电方向图可重构微带八木天线的基础上，还设计了一个双端口馈电的方向图可重构二维微带八木天线阵。

Chapter 2 discusses the function of optimum array based on the minimum meansquared error principle in CDMA system, the method of produce the reference signal, and proved whether the reference signal is the correspond PN code sequence or respread signal, the result of the array's weight converge can converge the same optimum weight under the condition that the PN sequence in a bit of data is long enough. In this chapter, we finally get the beam pattern and the correlate bit error rate after converge when several CDMA signal arrives in different direction.

本文的主要贡献及创新之处是：首次从理论上探讨了基于最小均方误差准则的最优天线阵在CDMA系统中的多址干扰抑制性能及其参考信号的产生方法，证明了采用有用信号相应的扩频码作为参考信号与采用将解扩信息与扩频码进行重扩频后的信号作为参考信号来调节自适应天线的权值均可使权值收敛于同一最优解。

Element mutual coupling is one of the intrinsic characteristics, witch should be considered especially in the design of the arrays antenna. And it not only affects the antenna gain, beam width and sidelobe level, but also changes the amplitude and phase of the radio signals received.

互耦是阵列天线固有特性之一，是设计天线时必须要重点考虑的因素，它不但对天线阵的增益、波束宽度等参数会造成的影响，而且会改变阵列接收信号的幅度和相位。

Control theory of antenna array uses the range-barycenter formular which US Boing put forward in 1970s in radio frequency simulation. This method neglects the change of polarization that the array surface curvature causes and the spacing between the antenna elements, so big errors are made.

射频仿真暗室天线阵列的精度控制通常采用20世纪70年代美国波音公司提出的幅度重心公式，该表达式忽略了天线阵面弧度对三元组喇叭极化方式的影响，以及三元组天线单元间距对控制精度的影响，因此存在控制误差。

The 〓 results show that arrays of unequal dipoles may be very 〓 in the design of antenna array systems.

本论文中还讨论了由不相同的天线单元组成的天线阵的综合问题，得到的结果是令人惊异的。

Using the method of Green's function, the coupling between conformal antennas is analyzed. The mutual coupling between the E plane and the H plane are calculated, and the effect of the curvature and space between to the mutual coupling are discussed.

本文利用格林函数法分析了微带天线阵元之间的互耦效应，得到了矩形微带单元阵元之间E面、H面的互耦结果，并讨论了圆柱曲率半径和阵元的间距对阵元之间互耦的影响。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。