大阻尼高灵敏度复合地震检波器的研究

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 COMPOSITE GEOPHONE WITH HEAVY DAMPING AND HIGH SENSITIVITY

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 ha...