@article{Gong2023, 
author = {Baichun Gong and Sha Wang and Shuang Li and Xianqiang Li},
title = {Review of space relative navigation based on angles-only measurements},
year = {2023},
journal = {Astrodynamics},
volume = {7},
number = {2},
pages = {131-152},
keywords = {space relative navigation, relative orbit determination, angles-only measurement, observability},
url = {https://www.sciopen.com/article/10.1007/s42064-022-0152-2},
doi = {10.1007/s42064-022-0152-2},
abstract = {Relative navigation is a key enabling technology for space missions such as on-orbit servicing and space situational awareness. Given that there are several special advantages of space relative navigation using angles-only measurements from passive optical sensors, angles-only relative navigation is considered as one of the best potential approaches in the field of space relative navigation. However, angles-only relative navigation is well-known for its range observability problem. To overcome this observability problem, many studies have been conducted over the past decades. In this study, we present a comprehensive review of state-of-the-art space relative navigation based on angles-only measurements. The emphasis is on the observability problem and solutions to angles-only relative navigation, where the review of the solutions is categorized into four classes based on the intrinsic principle: complicated dynamics approach, multi-line of sight (multi-LOS) approach, sensor offset center-of-mass approach, and orbit maneuver approach. Then, the flight demonstration results of angles-only relative navigation in the two projects are briefly reviewed. Finally, conclusions of this study and recommendations for further research are presented.}
}