查询词典 seismometer

There are many noise sources in measuring the seismometer transfer function, the main noise sources are investigated. The method of cross-special analysis is presented, flow process diagram of computing is given, the algorithms are discussed in detail, such as low-pass digital filter, computing of seismometer transfer function initial values, time domain convolution, bilinear transformation, estimation of power spectrum and cross-spectrum, window functions and preprocessing of measuring data etc.

在地震计传递函数测试过程中的存在多中噪声，本文分析了主要的噪声来源；介绍了用互谱分析方法测试地震计频率特性的基本原理和方法；给出采用该方法确定地震计传递函数的算法流程图；并对计算过程中采用的低通滤波器、地震计传递函数的初值确定方法、卷积运算方法、自谱和互谱估计、采用的窗函数和测试数据的预处理进行了详细讨论。

A new seismometer using laser Doppler effect is proposed.

本项目提出了应用多普勒效应的新型地震检波器。

In the surveys, some very closely spaced survey lines displayed remarkable differences in crustal structure. To find the reasons for the differences and to analyze the reliability of crustal structure, ocean bottom seismometer data from the west and east sides of the Dongsha Islands were reprocessed and inverted with tomography technique. The routine processing and inversion procedures include clock correction, position correction, finite-difference ray-tracing-based tomography, checkerboard test and comparison of the inverted crustal model with initial models. As a key step, we analyzed the lateral velocity resolution and smoothed out the short wavelength velocity variation which maybe most probably artifacts in the final velocity models.

在一些相隔很近的测线上，探测的深部地壳结构却相差较大，为了分析这些探测结果中差异的原因和地壳结构变化的可靠性，本文以东沙东侧海域测线和东沙西侧海域测线为例，对采集的海底地震仪记录进行了时间、位置校正和初至波走时拾取，利用有限差分地震走时层析成像进行了走时反演，获得所在剖面的地壳速度结构，并分析了模型的横向分辨率，剔除模型中短波长的横向速度变化。

Third, In order to check local site effect on this grassplot, we set up the other seismometer(056A) about 20 meters away from the grassplot.

由双站法可以看出，主要的放大频带落於10Hz 左右之高频区，呼应微地动测量所得到的第二峰值也落於此高频区。

The accurate measurement of seismometer transfer function is important to interpret and use of seis...

数字地震观测系统中地震计传递函数的测定对于观测数据在地震学中的解释和应用是非常重要的。

How is the movement of the seismometer converted into a seismogram?

测震仪的运动是怎么转换成震动图的？

A: It is relatively easy to acquire the necessary materials and build your own seismometer.

答：获得必要的材料做一个属于你自己的测震仪还是相对容易的。

Some fundamental problems in accurate measurement of seismometer transfer function are studied in detail.

本文详细地研究了对地震计传递函数测定的一些基本问题。

Q: What is a seismometer?

问：地震检波器是什么？

The method of the damping and frequency of seismometer is obtained in time domain is introduced, with the method, some application examples of FBS-3A seismometer are given.

本文也介绍了在时域确定地震计的阻尼常数和自振周期的原理和方法，给出了具体在FBS-3A地震计上的应用实例。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。