摘要
阐述了绝对重力仪对自由落体下落距离和相对应的时间测量的原理和方法,利用高精度时间测量芯片TDC502提高绝对重力仪的时间测量精度,并结合FPGA的大规模数字集成设计,提高了重力仪系统的测量精度。
The principle and method of measuring the distance of free falling objects and its corresponding time intervals used in absolute gravimeter are introduced. The importance is that high-precision time measurement chips TDCS02 is used to better the precision of time measurement,and combining the large-scale integration of digital de- sign, the precision of gravimeter system will be improved.
出处
《大地测量与地球动力学》
CSCD
北大核心
2013年第A02期74-77,共4页
Journal of Geodesy and Geodynamics
基金
科技部重大科学仪器设备开发专项(2012YQ100225)
