Astronomical position without observed altitude of the celestial body
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DOI: 10.1017/s037346331700073x
Abstract: The basis of all recommended methods for obtaining position by using celestial bodies is the known altitude of the celestial body being observed. Accordingly, it is necessary to have a sextant, classic or with an… read more here.
Keywords: celestial body; position without; position; altitude celestial ... See more keywords
State Estimation With Nonlinear Inequality Constraints for Small Celestial Body Flexible Landing
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DOI: 10.1109/taes.2024.3497873
Abstract: Compared to rigid landers, a flexible lander can reduce the landing risks in small celestial body missions by taking advantage of its soft structure. In this article, we focus on the autonomous navigation problem of… read more here.
Keywords: navigation; small celestial; celestial body; estimation ... See more keywords
The Impact Effect Callculator of Celestial Body Impacts to the Earth: The Constructor of Hazardous Orbits
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DOI: 10.1134/s0038094618060060
Abstract: Quick assessment of hazardous effects from impacts of large celestial bodies is achieved through the development of a new consequence calculator. A distinctive feature of this calculator is a new block, the Hazardous-Orbit Constructor, which… read more here.
Keywords: celestial body; impact effect; effect callculator; atmospheric entry ... See more keywords