Full
Outline
Using 60 days of observational data from 233 monitoring stations of the crustal movement observation network of China (CMONOC) in 2023, the ionospheric delay modeling accuracy and standard point positioning (SPP) accuracy of BDGIM, Klobuchar, NeQuickG and BDSBAS models are analyzed. The results show that the BDSBAS ionospheric correction has the highest accuracy, with the ionospheric delay residual error of 1.0 m and an average correction rate of 87% within the region, and 68% of the 3D positioning errors reaching 1.95 m. The NeQuickG and BDGIM models have similar performance, with the ionospheric delay residual error of 2.0 m and an average correction rate of 73%, and positioning accuracy of 2.59 m and 2.82 m, respectively. The Klobuchar model has a correction rate of 67% and a positioning accuracy of 4.35 m. For single frequency users within China, the BDSBAS ionospheric model is recommended as the first choice, followed by the BDGIM model, which has a relatively simpler algorithm and better accuracy.
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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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