This article is a survey paper on solving spacecraft trajectory optimization problems. The
solving process is decomposed into four key steps of mathematical modeling of the problem …

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 …

As is well known in celestial mechanics, coordinate choices have significant consequences
in the analytical and computational approaches to solve the most fundamental initial value …

Indirect methods used for solving optimal-control problems, when combined with proper
initialization and homotopy approaches, remain attractive for space trajectory optimization …

LOWERING the costs of interplanetary space missions through the use of small satellites
(eg, CubeSats) will be of key importance for solar system science and human space flight …

A central problem in orbit transfer optimization is to determine the number, time, direction,
and magnitude of velocity impulses that minimize the total impulse. This problem was posed …

Variational approach to optimal control theory converts trajectory optimization problems into
two-or multiple-point boundary-value problems, which consist of costates (ie, Lagrange …

This paper presents an approach for co-state initialization which is a critical step in solving
minimum-time low-thrust trajectory optimization problems using indirect optimal control …

Autonomous navigation (AN) and manoeuvring are increasingly important in distributed
satellite systems (DSS) in order to avoid potential collisions with space debris and other …

The aim of this paper is to propose a shape-based method in which the concept of Bezier
curve is used to efficiently design the three-dimensional interplanetary trajectory of a …