In recent years, there is a growing interest in small satellites for deep space exploration. The
current approach for planetary navigation is based on ground-based radiometric tracking. A …

In this paper a novel approach is developed for relative state estimation of spacecraft flying
in formation. The approach uses information from an optical sensor to provide multiple line …

A new method of interplanetary orbit determination is described that uses only scalar
satellite-to-satellite observations such as crosslink range to estimate the orbits of all of the …

When the extended strong tracking filter (ESTF) is used to improve the carrier tracking
estimation instead of the extended Kalman filter (EKF), it is found to be difficult to effectively …

Angles-only navigation during proximity operations suffers from a well-documented range-
observability problem when a single camera is assumed to be at the center of mass of the …

The proposed thesis of this dissertation has both a practical element and theoretical
component which aim to answer key questions related to the use of angles-only navigation …

Autonomous orbit determination (OD) for a group of spacecraft using only inter-spacecraft
measurements has considerable value in space systems engineering. This paper proposes …

To study the effects of incorporating higher-order nonlinearities with different measurement
types on observability and filter performance in sequential relative orbit estimation, an …

A method has been developed to use a time series of relative position measurements to
estimate the orbits of two satellites along with corrections to the gravity model of the celestial …

The autonomous navigation of multi-satellite systems using only on-board measurements is
a fundamental task in many space missions. The main purpose of this study is to establish …