In this paper, we provide a survey on available numerical approaches for solving low-thrust
trajectory optimization problems. First, a general mathematical framework based on hybrid …

Traditionally, indirect methods for trajectory optimization start with the non-intuitive guesses
of the initial costates, but it is difficult to generate the initial guesses for the low-thrust many …

Earth observation satellite (EOS) systems often encounter emergency observation tasks
oriented to sudden disasters (eg, earthquake, tsunami, and mud-rock flow). However, EOS …

The article presents a new approach for optimizing the trajectories of spacecraft with finite
thrust. The recently proposed angular variable–the auxiliary longitude–is considered as an …

The propellantless working principle of a solar sail requires the total flight time to be
minimized when looking for the optimal trajectory to reach a given target state. In this work …

Earth observation satellite (EOS) systems play a crucial role in performing emergency
monitoring tasks such as natural disasters. In terms of urgent observation tasks within a …

The issue of constellation-to-ground coverage is a research focus in Earth observation
applications. Traditional calculations often rely on grid point methods or their derivatives, but …

Earth observation satellites (EOS) are satellites equipped with optical sensors that orbit the
Earth to take photographs of particular areas at the request of users. With the development …

Multimode spacecraft propulsion has the potential to greatly increase the maneuvering
capability of spacecraft in comparison to traditional architectures. This technology combines …

The use of low-thrust electrical propulsion is a more and more frequent means to increase
satellite payload mass, especially for the telecommunication satellite market. These transfers …