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概述了自主式光纤旋转地震仪(AFORS)野外测试的应用和发展,此地震仪利用萨格奈克效应直接测量地面地震源的旋转。自主式光纤旋转地震仪的主要优势在于它不受直线运动影响,可以直接测量地震期间产生的旋转分量。该系统包含一个专用的自主式信号处理装置,可以对旋转运动的测量计算进行优化,而基于互联网的遥感系统可以对自主式光纤旋转地震仪远程控制。实验研究表明,这两种设备在检测频带为0.83~106.15Hz时,可以保持精度不低于5.1×10~(-9)~5.5×10~(-8)rad/s,并且灵敏度呈线性变化。文中还给出了一些用AFORS-1连续监测波兰克雄日地震观测站旋转事件的实验结果。
The application and development of field testing of autonomous fiber optic seismometers (AFORS) are summarized. The seismometer uses the Sagnac effect to directly measure the rotation of a ground source. The main advantage of an autonomous fiberoptic seismometer is that it is independent of linear motion and can directly measure the rotational component generated during an earthquake. The system includes a dedicated, autonomous signal processing unit that optimizes the measurement of rotary motion, while the Internet-based telemetry system remotely controls autonomous fiber optic seismometers. Experimental results show that the accuracy of these two devices can be maintained within the range of 5.1 × 10 -9 ~ 5.5 × 10 -8 rad / s with a detection band of 0.83 ~ 106.15 Hz, and the sensitivity changes linearly . The article also gives some experimental results of AFORS-1 continuous monitoring of the rotation events at the Kersconn earthquake observation station in Poland.