Quantizing Noise Impact Analysis of the Two-Sample Zero-Crossing Methodin the Free Fall Absolute Gravimeter
Abstract High speed ADC is employed in the free fall absolute gravimeter to record the integral fringe waveform, acquiring more information about local gravity. We discuss variations in gravity acceleration due to some parameters such as amplitude of the fringe voltage signal, ADC bits, reference voltage, and sampling frequency. The analysis shows that the gravity error caused by ADC quantization could be limited to 0.01 μGal by parameters optimization.
Key words :
digital fringes
quantizing noise
absolute gravimeter
two-sample zero-crossing
Cite this article:
HU Ming,ZHONG Min. Quantizing Noise Impact Analysis of the Two-Sample Zero-Crossing Methodin the Free Fall Absolute Gravimeter[J]. jgg, 2017, 37(9): 973-976.
HU Ming,ZHONG Min. Quantizing Noise Impact Analysis of the Two-Sample Zero-Crossing Methodin the Free Fall Absolute Gravimeter[J]. jgg, 2017, 37(9): 973-976.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2017/V37/I9/973
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