摘要
研制了一种新型高灵敏度、大阻尼、低输出阻抗复合型地震检波器,并通过利用微电子技术增大检波器阻尼比系数的方法,实现检波器主频区频率特性改造,使速度检波器在有效使用频带内达到加速度特性.现场试验结果表明,该检波器单显记录信噪比较高,视频率高,能量强,具有拓宽地震子波频带和提高主频的能力,适合于高分辨率地震勘探使用.
A new composite geophone,with a number of advantages such as high sensitivity,heavy damping ratio and low output impedance,is developed based on micro-electronic technology,which is adopted to modify the geophone frequency characteristics in the main frequency region to approach the acceleration characteristics by increasing damping of the geophone.The in-situ testing results show that the data recorded by the composite geophone have high S/N ratio,high visual frequency and strong energy,and the geophone has the ability to compensate the high frequency energy and to widen the bandwidth of seismic wavelet,and can be used for high resolution seismic explorations.
出处
《力学与实践》
CSCD
北大核心
2010年第2期100-102,107,共4页
Mechanics in Engineering
关键词
地震检波器
高分辨率
地震勘探
阻尼
灵敏度
频率特性
geophone
high resolution
seismic exploration
damping
sensitivity
frequency characteristic
