TDC502-TIME-INTERVAL MEASUREMENT APPLIED TO ABSOLUTE
GRAVIMETER
1）Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071
Abstract 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 highprecision time measurement chips TDC502 is used to better the precision of time measurement,and combining the largescale integration of digital design, the precision of gravimeter system will be improved.
Key words ：
TDC502;
absolute gravimeter
time measurement
FPGA
integration
Received: 01 April 2013
Published: 24 October 2013
Cite this article:
Wang Rong,Guo Tangyong,Zou Tong et al. TDC502-TIME-INTERVAL MEASUREMENT APPLIED TO ABSOLUTE
GRAVIMETER[J]. jgg, 2013, 33(Supp.2): 74-77.
Wang Rong,Guo Tangyong,Zou Tong et al. TDC502-TIME-INTERVAL MEASUREMENT APPLIED TO ABSOLUTE
GRAVIMETER[J]. jgg, 2013, 33(Supp.2): 74-77.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2013/V33/ISupp.2/74
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