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测震系统
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  seismological system
     Based on the analysis of factors of influence on the dynamic range of a digital seismological system, a method is given to adapt the seismometers to the digital seismological system when the desired monitoring ability is given.
     本文在讨论了影响数字测震系统动态范围因素分析的基础上,给出了在期望的台网监测能力的情况下,实现数字测震系统中地震计的适配的方法。
短句来源
     The method of calibration of a digital seismological system is also described in this paper.
     此外,本文还给出了数字测震系统标定结果的描述方法。
短句来源
  seismic recording system
     ANALYSIS AND MEASUREMENT OF SPECTRAL CHARACTERISTICS OF A SEISMIC RECORDING SYSTEM
     测震系统频谱特性的分析与测定
短句来源
  “测震系统”译为未确定词的双语例句
     DYNAMIC RANGE ANALYSIS AND ADAPTATION OF DIGITAL SEISMOLOGICAL SYSTEMS
     数字测震系统动态范围分析及适配
短句来源
     Improvements in the Adjustment of Telemetric Seismic Network of Chengdu
     测震系统标定的改进
短句来源
     Application of Wireless and Recording in Person Vibration Testing System on Ground Vibration Control in Open-pit Mine Blasting
     无线自记测震系统在露天矿山爆破地震控制中的应用
短句来源
     With the analysis of the adjustment of telemetric seismic network, we made some improvements on the method of measuring the medium resistance to increase speed and exactness of adjustment.
     本文对常用的通过测中肯电阻标定测震系统的方法进行了分析并提出了改进,以期提高标定工作的精度和速度。
短句来源
     In our country, the system and means for observing ground vibration effect in engineering blasting, especially the wireless and recording in person vibration testing system is basicallyformed.
     在国内,对工程爆破地震效应的观测基本上形成了自己的观测系统和手段,尤其是无线自记测震系统的运用。
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  相似匹配句对
     system).
     系统)。
短句来源
     Improvements in the Adjustment of Telemetric Seismic Network of Chengdu
     测震系统标定的改进
短句来源
     SYSTEM
     系统
短句来源
     GIS based working system for seismological catalogue
     基于GIS的测震编目工作系统
短句来源
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  seismic recording system
The OSS system is a permanent, deep ocean borehole seismic recording system composed of a borehole sensor package (tool), an electromechanical cable, recorder package, and recovery system.
      


The problem of accurately measure the spectral characteristics of a seismic observational system is an important subject of investigation in seismology. At present, the usual method to measure and calculate is by separate sections. In this way, it requires not only a certain amount of instrumental work, but also neglects the mutual effect between the seismograph and the amplifier at their junction. As a result, neither can the phase-characteristics be directly determined by experiment nor accurate amplitude-frequency...

The problem of accurately measure the spectral characteristics of a seismic observational system is an important subject of investigation in seismology. At present, the usual method to measure and calculate is by separate sections. In this way, it requires not only a certain amount of instrumental work, but also neglects the mutual effect between the seismograph and the amplifier at their junction. As a result, neither can the phase-characteristics be directly determined by experiment nor accurate amplitude-frequency characteristics be obtained.In this paper, a method has been proposed for the determination of the spectral characteristics of any seismic observational system by means of Fourier Transform. It is called the TS-method. Two testing signals are used, a triangular and a step function pulse. If the dynamic response of the testing signals are known the spectral characteristics of the system under investigation can be found immediately.The approximate formula for the spectral characteristics can be expressed asandWhen the transient response of system to any arbitrary input is known, the TS-method can also be used to determine the frequency response characteristics of a system.

如何精确地测定地震观测系统的频谱特性,是测震学中的一项重要课题。目前所用的分段测量和计算的方法,不仅需要一定的仪器设备,而且还忽略了机(拾震器)—电(放大装置)接口部分的相互作用和影响。因此,不能获得精确的幅频特性,也不能用实验直接得出相位特性。 本文通过傅里叶变换推导出计算与实测任何一种测震系统频谱特性的方法——TS方法,其中用三角波与阶跃函数作为测试信号。 如果对测试信号的动态响应已知,则所研究的系统频谱特性可立即求得。 频谱特性的近似计算公式可表示如下: 以及 当任意输人函数作用下,系统的响应函数已知时,也可用TS方法求得频谱特性。

The seventh paper reports“the appraisal meeting for the scientific results of low-frequency vibration me- asurement“and the appraisal meeting for a measurement standard for low-frequency vibrations”convened in Beijing on November 15~18 1983.It briefly reviews the low-frequency seismometry system in China;and outlines the performance and specifications of the newly-developed standard measuring system for low-frequ- ency vibrations,the test and assessment of the system,as well as the brief course of passing through...

The seventh paper reports“the appraisal meeting for the scientific results of low-frequency vibration me- asurement“and the appraisal meeting for a measurement standard for low-frequency vibrations”convened in Beijing on November 15~18 1983.It briefly reviews the low-frequency seismometry system in China;and outlines the performance and specifications of the newly-developed standard measuring system for low-frequ- ency vibrations,the test and assessment of the system,as well as the brief course of passing through of the appraisal.

报导了1983年11月15~18日在北京召开的“低频振动计量标准系统科技成果鉴定会”和“低频振动计量标准鉴定会”的概况,文章扼要回顾了中国低频测震系统,简介了新研制的低频振动计量标准系统的性能指标,以及对该标准系统进行检测和考核,并通过鉴定的简要过程。

In this paper the configuration and principle of design of the HS1 are described, and some results of experimental marine observation are given.The HS1 digital ocean bottom seismograph is developed for deep marine seismic sounding. The design consists of a digital seismometer, launching and recovering devices. The main characteristics which were measured by microcomputer are the following; noise level no more than 0.1 μV·ms; dynamic range 119 dB; A/D and D/A both 12 bit; bandwidth 0.2-25 Hz; linearity error...

In this paper the configuration and principle of design of the HS1 are described, and some results of experimental marine observation are given.The HS1 digital ocean bottom seismograph is developed for deep marine seismic sounding. The design consists of a digital seismometer, launching and recovering devices. The main characteristics which were measured by microcomputer are the following; noise level no more than 0.1 μV·ms; dynamic range 119 dB; A/D and D/A both 12 bit; bandwidth 0.2-25 Hz; linearity error less than 1%; harmonic distortion less than 1%; crosstalk less than -119 dB ; accuracy of timing 0.01 s; power consumption 1.1 W when waiting and 3.3 W for recording. Both digital and analog signals obtained simultaneously by the system can be easily preproeessed by a. microcomputer.

HS1海底数字地震仪是为探测海洋地壳深部构造而研制的,由主机数字化测震系统及附属的投放和回收装置组成。经微机测试,主要性能指标为:输入端噪声电压0.1μV·rms;动态范围119dB;A/D和,D/A12位;通频带0.2—25Hz;线性优于1%;谐波失真<1%;串音<-119dB;时间服务准确到0.01s;等待功耗1.1W;记录功耗3.3W。能同时输出模拟和数字信号,便于送微机预处理。本文着重介绍该机的组成和工作原理,并给出了海上实验获得的地震剖面图。

 
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