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Based on GRACE-FO observations from March to April 2022, we analyze the consistency between precise orbit products and KBR/LRI inter-satellite kinematic measurements. The results show that the residuals between KBR/LRI and inter-satellite range, range rate and acceleration derived from the orbit solutions are ±4 mm, ±1×10-5 m/s and ±1×10-5 m/s2, respectively, with RMS values range from 10-6 to 10-3, confirming the reliability of orbit data. In gravity field inversion, the line-of-sight inter-satellite range rate inversion results derived from orbit data exhibit stripe-like noise. The accumulative degree variance of spherical harmonic coefficients is one order of magnitude higher than that of KBR/LRI, and the signal-to-noise ratio is also reduced by about 1. However, in terms of low-degree spherical harmonic coefficients below degree 20, the deviation between this result and CSR reference coefficient is smaller. This phenomenon indicates that orbit data has an advantage in constraining the long-wavelength signals in specific frequency bands for low-degree gravity field model inversion, and can provide valuable supplementary references for multi-source data fusion.
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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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