数字地震仪

DAS型轻便数字地震仪在野外观测中的运用及注意的有关问题

Application of das portable digital seismograph in field observation and some notice

数字地震仪中的FDNR滤波器

FDNR filter in digital seismograph

对数字地震仪B格式记录中两个间隙时间的分析

Examination of TMO gaps of digital seismic recorder whilst recording in seg-b format

DFS-Ⅴ型数字地震仪数字AGC的理论分析与探讨

Discussion on the theory of the digital AGC of DFS-V digital seismograph

IMAGE数字地震仪是目前世界上先进的地震仪之一，如何将它拥有的先进技术和功能开发出来应用于生产中，以满足新勘探技术的需要是非常重要的。

IMAGE system is one of the most advanced seismic instruments in the world . How to make best use of the advanced technology and function to meet the demand for new exploration technology is very important .

DFS-V数字地震仪去假频滤波器的前两级双T网络中，由于C4电容的存在，使得对称双T网络的传递特性发生了重大变化。

Added a capacitor C_4 respectively , two initial twin T network s in the antialias filter of DFS-V seismic acquisition system greatly differ from symmetric twin T network in transfer characteristic .

在网络数字地震仪的专用嵌入式Linux中，增加了CPLD设备驱动程序，增加WatchDog，硬盘超时管理，GPS时间服务等功能，有效提高了系统运行的可靠性和数据产出质量。

THE reliability and quality of output data are greatly improved by adding the codes for the CPLD device driver , WatchDog , hard-disk timeout management , GPS timing service , etc , to the dedicated embedded Linux operating system .

ARAM-ARIES地震仪是加拿大GEO&X公司研制开发的新型网络化数字地震仪，它性能先进，使用灵活。

ARAM-ARIES seismograph is a new-type of network digital seismograph researched and developed by Canadian GEO-X company , which has advanced and use-flexible characters .

由于长周期数字地震仪基本上都采用速度平坦型设计，周期从3s到280s范围内仪器的放大倍数（增益）是一个常数，用本文的方法可以非常方便、准确地测定面波震级。

Due to long period digital seismographs are designed by using Velocity Smooth type , the amplification ( gain ) of seismographs are invariable in the range of period from 3 to 280 second .

本文应用所谓逻辑推导法分析了DFS-V数字地震仪模拟部件调零的逻辑控制原理，并推导出了每一步分析的逻辑表达式。

The principle of zeroing logic control of analogue unit in DFS-V seismograph is analysed by means of a logic reasoning method , and the logic expression of every analysing step is derived in this paper .

FDNR滤波器是目前国外一些数字地震仪如MDS-10，GUS-BUS采用的一种比较新颖的有源滤波器，它的主要优点是对元件参数变化的灵敏度很低。

FDNR filter , whose main advantage lies in its low sensitivity to parameter variation of an element , is a newer active filter used in digital seismographs , such as MDS-10 and GUS-BUS seismographs .

数字地震仪传递函数幅频特性及其应用的分析

Amplitude frequency characteristics and application of transfer function by digital seismograph

数字地震仪系统传递函数的一种计算方法

A method for calculating the transfer function of digital seismograph system

数字地震仪参数设置方法的一些体会

Some experience in the parameter setting method of digital seismic instruments

数字地震仪记录近震震级范围估算

Evaluation On The Range Of Local Magnitude Recorded By Digital Seismograph

最小平方法在数字地震仪畸变检查中的应用

The application of least squares method to distortion test of digital seismograph

浅层数字地震仪磁带记录格式及解编计算机模拟震波传播记录

Digital magnetic tape format and demultiplex for the shallow digital seismic instrument

同时初步探讨分析了银川台数字地震仪震级误差的原因。

The reasons for magnitude error of digital seismograph were also analyzed .

利用速度型数字地震仪记录测定面波震级

Determination or surface wave magnitude by Using velocity type digital seimograph recordings

数字地震仪观测系统常见故障及排除

Common Troubles of Digital Seismograph Observation System and Their Removals

瞬时浮点放大器是数字地震仪中的关键部件。

Instantaneous floating point amplifier is a key unit in digital seismic system .

数字地震仪连续记录实时备份、故障报警程序

Program of real-time backup and fault warning about continuous record of digital seismograph

滇西数字地震仪台网的噪声

Noise of digital seismograph network in the western Yunnan

数字地震仪一种新型单极性A/D转换器的设计

A newly designed monopolar a / d converter used in digital seismic recorder

数字地震仪（或雷达）的文件格式及其转换方法

File format of digital seismograph ( or radar ) and its convertion method

有效观测动态范围的大小与数字地震仪的种类和配置有关。

Effective dynamic range is related with type and configuration of digital seismograph .

地震信号子样幅值的概率分布及数字地震仪的量化信噪比

Probability Distribution of Seismic Signal Subsample Amplitudes and Quantized SNR of Digital Seismic Instruments

长春地震台数字地震仪近震速报震级偏差研究

A Study on the Local Magnitude Instant Derivation from Digital Seismic Apparatus at Changchun Seismic Station

数字地震仪的发展历史及展望耳蜗电图与脑干电反应的综合描记方法

The History and Prospect of Seismic Recording System Synthetic Recording of Electrocochleogram and Auditory Brainstem Responses

数字地震仪故障部位的判断

The diagnosis of digital seismograph breakdowns