An amplifier and recording system for seismic crustal refraction work
An amplifier and recording system for seismic crustal refraction work
复制标题
用于地震地壳折射工作的放大器和记录系统
DOI：
10.1080/00288306.1969.10431111
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发表时间：
1969
影响因子：
2.2
通讯作者：
G. Nicol
中科院分区：
文献类型：
--
作者：
R. Green;G. Nicol
摘要为了成功地进行地震地壳折射工作，必须有一个可靠、坚固、便携的记录系统，能够在1 Hz下检测10 - 3 m sec-1的地面运动。本文介绍的微型检波器直接从地震检波器接收微伏级信号，并通过使用集成电路将其做得足够小，以便装入地震检波器外壳内。该放大器具有低阻抗和差分输出。信号通过屏蔽的陆线馈送到主放大器，主放大器也有差分输入。差分输出用于前置放大器，差分输入用于主放大器，通过屏蔽线互连，确保系统的高抗扰度。主放大器还具有差分输出，用于馈送合适的记录器，例如Brush 220或San'ei Visigrsph。集成电路也用于主放大器的结构中。准确的标准时是地壳折射工作成功的关键，也是地震资料处理的重要环节。
Abstract For successful seismic crustal refraction work, a reliable, robust, and portable recording system capable of detecting ground movements of 10−3 m sec−1 at 1 Hz is necessary. The miniature preamplifier described in this paper, accepts microvolt signals directly from the seismometer and by using integrated circuits it has been made small enough to fit within the seismometer case. The preamplifier has a low impedance and differential output. The signal is fed via a shielded landline to the main amplifier which also has a differential input. The use of differential output for the preamplifier and differential input for the main amplifier, interconnected by a shielded line, assures a high degree of noise immunity for the system. The main amplifier also has differential output for feeding a suitable recorder such as the Brush 220 or San'ei Visigrsph. Integrated circuits are also used in the construction of the main amplifiers. Accurate standard time is vital for the success of crustal refraction work a...