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WANG Lexing, postgraduate, majors in continuous gravity data processing and geodynamic, E-mail: wanglexing22@mails.ucas.ac.cn
Outline
In this paper, after preprocessing and various corrections of the Zigui station gPhone gravimeter data for the whole year of 2017, we use four methods to carry out a comparative study of drift correction including polynomial correction order selection, drift removal effect evaluation of each method, whether the BEADS algorithm is effective and other issues. The research results show that when the polynomial fitting method is used to remove the drift problem of gPhone gravimeter data, it will become stable when the order reaches about fourth and fifth orders. For general research, it is recommended to use fifth-order polynomials to remove drift, which can meet data processing requirements. When filtering to remove drift, we need to pay attention to the marginal effect. The EEMD method is highly operable and has more advantages than wavelet filtering. The BEADS algorithm can realize the function of fitting trend terms to remove drift, but can it be used in various studies? This requires further research. The research results of this article can provide an effective reference for drift correction of related spring-type gravimeters.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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