RESEARCH ON SINUSOIDAL EXCITATION SOURCE OF CAPACITIVE
MICROMETER FOR AIRBORNE GRAVITY MEASUREMENT SYSTEM
BASED ON DDS TECHNOLOGY
1） Key Laboratory of Dynamic Geodesy, Institute of Geodesy and Geophysics, CAS, Wuhan 430077
2） University of Chinese Academy of Sciences, Beijing 100049
Abstract：The principle of sinusoidal excitation source system developed with direct digital synthesis ( DDS ) technology is systematically introduced and established by using simulation module of matlabsimulink. The simulation results show that amplitude stability and high frequency stability problems of the past sine circuits are basically resolved by improved to 10-6-10-7 and 10-4 , respectively. Moreover, the precision of gravimeter has been increased.
Li Wenping,Liu Lintao,Wu Pengfei. RESEARCH ON SINUSOIDAL EXCITATION SOURCE OF CAPACITIVE
MICROMETER FOR AIRBORNE GRAVITY MEASUREMENT SYSTEM
BASED ON DDS TECHNOLOGY[J]. jgg, 2013, 33(Supp.2): 84-87.
