【摘要】 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。更多还原

【Abstract】 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.更多还原