半功率点

半功率点间的发射束角

Emission beam angle between half power points

半功率点法估计阻尼比的误差分析

Influence of linear interpolation approximation to half power points on the damping estimation precision

结果表明由谱峰半功率点宽度测定的Q值一般与本征Qr值不同，周期图分析中，Qr的讯息往往淹没在有限资料窗效应内。

The results show that Q derived from measurement of half-power width generally differs from the intrinsic Qr . In periodogram analysis the information of QT is usually submerged in the effects of finite data window .

半功率点法估计阻尼的一种改进

Improvement on the Damping Estimation by Half Power Point Method

桥梁结构的阻尼因素十分复杂，本文通过脉动测试利用半功率点法得到了实测的阻尼比。

The damping factor of bridge structure is very complicated .

在本研究中，借鉴了工程学中半功率点的思路，提出了缓冲力系数的指标，是一项有意义的创新。

Taking half power point in engineering as referrence , then buffer force coefficient is innovated .

文章考虑了阵元宽度对主瓣半功率点宽度的影响，并与忽略阵元宽度的线列阵的情况进行了比较。

This paper studies the effects of array element width on half - power bandwidth , and proposes a new method .

最后，本文依据自功率谱和互功率谱采用半功率点法计算各振型的阻尼比。

Finally , the damping ratio of each mode is calculated by using the half-power point method on the basis of auto power spectrum and cross power spectrum .

在提出日凌干扰处理新模型的基础上，根据太阳视面与天线主瓣半功率点截面的相对运动关系，系统阐述了日凌时天线噪声温度的分析方法。

A new model of dealing with solar radiating disturbance is put forward and a systematic explanation to the antenna noise temperature analysis in case of solar radiating disturbance is made .

采用理论分析与数值仿真相结合的方法研究了半功率点法的主要误差因素和各自特性，特别是其中窗阻尼变化规律。

Base on the continous transform definition , a new estimation method is proposed , the main error factor involved in the method is studied with theoretical analysis and numerical simulation .

使用自由振动衰减法、白噪声激振法和半功率点法分别测出了水泵在三个方向上的自振频率和阻尼比。

By using the free vibration attenuation method , the white noise exciting method and the half power point method , natural frequencies and damping ra - tios of the water pump in three directions are measured respectively .