Design of a vision-based three-axis attitude estimation algorithm for small satellites

Download

12626133.pdf

Date

2021-2-8

Author

Güzel, Mehmet Burak

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

293
views

631
downloads

Equipment and budget limitations of satellite missions encourages researchers to use on-board equipment for multiple tasks. Camera stands out as an ideal equipment that can be used for multiple purposes in satellites making Earth observation. In this thesis, an attitude estimation algorithm is designed to aid the coarse attitude estimates with the attitude information obtained from Earth images. Attitude information is extracted from Earth images according to perspective geometry laws. This estimated attitude is fed into a multiplicative extended Kalman filter (MEKF). Coarse attitude information is obtained by pre-processing magnetometer and sun sensor measurements within the QUEST algorithm and also used in the measurement update process of the filter to ensure the sustainability of the attitude estimates. The algorithm is tested for a hypothetical nano satellite in different scenarios depending on the availability of Earth images at different times.

Subject Keywords

Small satellite, Imaging-based attitude estimation, Camera, Earth images, MEKF

URI

https://hdl.handle.net/11511/89641

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Imaging-based attitude determination algorithm for small satellites: Design and the preliminary results Güzel, Mehmet Burak; Söken, Halil Ersin; Tekinalp, Ozan (2020-01-01) Limitations for small satellite missions encourages researchers and engineers to use on-board equipment for multiple tasks. Thus, both space can be saved and the equipment redundancy can be prevented. For Earth-imaging satellites a prominent equipment that can be used for multiple purposes is the camera. Other than the observation, the taken images can be used as measurements for determining the absolute or relative attitude of the spacecraft. Depending on also the content of the image (e.g. stars, Earth, M...
Development of a Material Response Solver for Charring Ablative Materials Coşkun, Volkan; Sert, Cüneyt; Acar, Bülent (2019-06-14) Development of a solver in order to estimate the material response of charring ablative materials which are utilized as thermal protection systems in space vehicles is presented. First, the governing equations for modeling transient thermal response of charring ablative materials and the adopted numerical solution schemes are reviewed. The governing equations include energy balance, pyrolysis kinetics and mass balance. Solution of the governing equations in conjunction with appropriate boundary condi...
A Trust-based Approach for Secure Data Dissemination in a Mobile Peer-to-Peer Network of AVs Bhargava, Bharat K.; Angın, Pelin; Ranchal, Rohit; Sivakumar, Ranjitkumar; Linderman, Mark; Sinclair, Asher (2012-03-01) Mobile peer-to-peer networks of aerial vehicles (AVs) have become significant in collaborative tasks including military missions and search and rescue operations. However, the nature of the communication between the nodes in these networks makes the disseminated data prone to interception by malicious parties, which could cause serious harm for the designated mission of the network. In this paper, we propose an approach for secure data dissemination in a mobile peer-to-peer network, where the data disclosed...
Design of a solar powered unmanned airship Sönmez, Onur Sinan; Alemdaroğlu, Hüseyin Nafiz; Department of Aerospace Engineering (2015) This thesis presents the design and analysis of a low altitude, high endurance Unmanned Airship which is capable of carrying payloads up to 70 kg to 1000 meters altitude. This UAV has an endurance of 2 weeks and can resist winds up to 90 km/h. It is completely solar powered and it uses Helium as the lifting gas and uses electric motors to change it’s location. The purpose of this thesis is to design an unmanned, completely solar powered airship to be used for various missions such as: reconnaissance mission...
An interactive program for GPS-based dynamic orbit determination of small satellites Karslıoğlu, Mahmut Onur (Elsevier BV, 2005-04-01) This work introduces a near real-time dynamic orbit determination program for small satellites. A quality check of orbit data on ground is important for satellites with GPS positioning that is only available at discrete time epochs because of the limited power-supply onboard, so that space-borne GPS receivers are switched on/off intermittently, or because of possible malfunctioning of GPS receivers. The method of parameter estimation with space-borne GPS position fixes as observations is based on an extende...

Citation Formats

M. B. Güzel, “Design of a vision-based three-axis attitude estimation algorithm for small satellites,” M.S. - Master of Science, Middle East Technical University, 2021.