重力加速度量值溯源体系介绍及重力仪的研制现状

Introduction of Gravity Accelerometer Value Tracing System and Development of Gravity Meter

重力测量在地质研究、国防军事、地球物理、资源勘探、地震预报及计量科学等领域有着广泛的应用。目前,提高惯性导航精度普遍采用的方法是将重力加速度和惯性加速度分离,重力加速度测量的准确性需要通过量值溯源来保证,绝对重力仪是重力测量值传递和溯源的主要载体和工具。以此为背景,介绍了绝对重力仪的主要技术和发展现状,从而引出绝对重力测量和重力计量体系是整个重力测量溯源到SI国际单位制,确保其测量量值准确可靠的唯一途径。

Gravity measurement has been wildly used in national defense and military, geological research, resource exploration, geophysics, earthquake prediction and metrology etc. At present, the commonly used method to improve the inertial navigation accuracy is to separate the gravity acceleration from the inertial acceleration. The accuracy of the gravity acceleration measurement needs to be ensured by the value traceability. The absolute gravimeter is the main carrier and tool for gravity measurement value transmission and traceability. Based on this background, the main techniques and development status of the absolute gravimeter are introduced, which leads to the fact that the absolute gravity measurement and gravity measurement system is the only way to trace the entire gravity measurement to the SI and to ensure accurate and reliable measurement.