排序方式： 共有3条查询结果，搜索用时 31 毫秒
1
1.
The paper presents the results of a study of the dynamic structure of the orbital space of the navigation systems GLONASS and GPS. It is shown that the dynamic structure of the GLONASS region is determined by the action of one stable Lidov–Kozai secular resonance. The motion of almost all the retired objects of the GLONASS system is stable throughout the 100-year study period. In the GPS region, there is an orbital resonance and a large number of secular resonances. Their combined influence leads to a rapid increase in the eccentricity of the orbits of the retired objects of the system. Features of the dynamic structure of the orbital space are used to find the graveyard (parking) orbits of the retired objects of navigation systems. 相似文献
2.
S. E. Kichanov D. P. Kozlenko E. V. Lukin A. V. Rutkauskas E. A. Krasavin A. Y. Rozanov B. N. Savenko 《Meteoritics & planetary science》2018,53(10):2155-2164
The internal structure of an olivine-rich fragment of the Seymchan meteorite was studied using neutron tomography. The differences in the neutron attenuation coefficients of constituent elements of the studied pallasite and the application of modern mathematical algorithms for a three-dimensional (3-D) imaging data analysis allow us to obtain a spatial distribution of different meteorite components. The heterogeneous distribution of the nickel in the metal phase was observed. In addition to the resulting 3-D model of the Seymchan meteorite, the distributions of the volumes, average sizes, and shape-related parameters of the FeNi metal component and olivine grains were obtained. 相似文献
3.
Solar System Research - The paper presents the results of a study of the dynamic structure of near-Earth orbital space in the 1 : 2 resonance region with Earth’s rotation speed. The results... 相似文献
1