大地测量与地球动力学2011，Vol.31Issue(5)：151-155,5.
用SGC053超导重力仪观测资料对gPh058重力仪格值的精密测定
ACCURATE DETERMINATION OF SCALE VALUE OF gPh058 GRAVIMETER BY USE OF OBSERVATIONS WITH SGC053 SUPERCONDUCTING GRAVIMETER
摘要
Abstract
Using same-site observations obtained with the SGC053 superconducting gravimeter and the gPh058 gravimeter in Gravitation and Earth Tide Observatory of China (GETOC), the scale value ( alias calibration factor) of the gPh058 gravimeter is accurately determined with the Chebyshev polynomial model. Through the analysis of regression order, sampling number, sampling time, the most obvious affect factor is the sampling time. The weighted average scale factor of different sampling times is 1.008 4 ±0.00 09 x 10-8ms-2/Mv. Compared with the harmonic analysis before determination, the numerical results show that tidal parameters of comparatively high accuracy can be achieved with the gPh058 gravimeter. After determination, the amplitude of the residual with synthetic tideand drift correction is only 1/4 of that as before. Although gPh058 gravimeter had been calibrated in factory, the same-site determination should be more reliable.关键词
SGC053超导重力仪/gPhone058重力仪/格值系数/同址观测/潮汐参数Key words
SGC053 superconducting gravimeter/gPhone058 gravimeter/scale factor/same -site observation/tidal parameter分类
天文与地球科学引用本文复制引用
张锐,韦进,刘子维,李辉,郝洪涛..用SGC053超导重力仪观测资料对gPh058重力仪格值的精密测定[J].大地测量与地球动力学,2011,31(5):151-155,5.基金项目
陆态网络应用软件研制 （）
科技部国家社会公益研究专项(2005DIB3J120) （2005DIB3J120）
全国重力台网学科中心运行经费(201101008) （201101008）
国家自然科学基金(41004030) （41004030）
中国地震局地震研究所所长基金(IS200956041) （IS200956041）
