Personal information

Satellite Attitude Control
South Africa

Activities

Employment (2)

Stellenbosch University Faculty of Engineering: Stellenbosch, Western Cape, ZA

2002-01-01 to present | Professor in Control and Satellite Systems (Electrical and Electronic)
Employment
Source: Self-asserted source
Willem Steyn

Surrey Satellite Technology Ltd: Guildford, Surrey, GB

1997-12-01 to 2001-12-01 | Team leader and Senior Engineer (ADCS team)
Employment
Source: Self-asserted source
Willem Steyn

Education and qualifications (2)

University of Stellenbosch Faculty of Engineering: Stellenbosch, Western Cape, ZA

1976-02-01 to present | BEng (Hons), MEng, PhD (Electric and Electronic Engineering)
Education
Source: Self-asserted source
Willem Steyn

University of Surrey Department of Electronic Engineering: Guildford, Surrey, GB

1989-10-01 to 1990-08-31 | MSc Satellite Engineering (Electronic Engineering (Surrey Space Centre))
Education
Source: Self-asserted source
Willem Steyn

Works (50 of 79)

Items per page:
Page 1 of 2

Multi-axis thruster-only fine pointing control strategies for nanosatellites

Aerospace Science and Technology
2024-07 | Journal article
Contributors: Tian Cilliers; Willem Herman Steyn; Hendrik Willem Jordaan
Source: check_circle
Crossref

Plant-parasitic nematodes associated with bush tea (Athrixia phylicoides) in South Africa and their relationship with physico-chemical soil properties

Nematology
2023-11-14 | Journal article
Contributors: Itani P. Guga; Willem P. Steyn; Mariette Marais; Antoinette Swart; Chantelle Girgan; Akhona Mbatyoti; Fhatuwani N. Mudau; Dirk De Waele; Mieke S. Daneel
Source: check_circle
Crossref

RemoveDEBRIS: An in-orbit demonstration of technologies for the removal of space debris

Aeronautical Journal
2020 | Journal article
EID:

2-s2.0-85077207673

Contributors: Aglietti, G.S.; Taylor, B.; Fellowes, S.; Ainley, S.; Tye, D.; Cox, C.; Zarkesh, A.; Mafficini, A.; Vinkoff, N.; Bashford, K. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

The active space debris removal mission RemoveDebris. Part 1: From concept to launch

Acta Astronautica
2020 | Journal article
EID:

2-s2.0-85072155748

Contributors: Forshaw, J.L.; Aglietti, G.S.; Fellowes, S.; Salmon, T.; Retat, I.; Hall, A.; Chabot, T.; Pisseloup, A.; Tye, D.; Bernal, C. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

The active space debris removal mission RemoveDebris. Part 2: In orbit operations

Acta Astronautica
2020 | Journal article
EID:

2-s2.0-85072246633

Contributors: Aglietti, G.S.; Taylor, B.; Fellowes, S.; Salmon, T.; Retat, I.; Hall, A.; Chabot, T.; Pisseloup, A.; Cox, C.; Zarkesh, A. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

The in-orbit technology demonstrations of the RemoveDebris mission

Proceedings of the International Astronautical Congress, IAC
2019 | Conference paper
EID:

2-s2.0-85079139151

Contributors: Taylor, B.; Aglietti, G.S.; Fellowes, S.; Salmon, T.; Hall, A.; Chabot, T.; Pisseloup, A.; Ainley, S.; Tye, D.; Retat, I. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

A novel high-performance nanosatellite attitude and rate sensor

Proceedings of the International Astronautical Congress, IAC
2018 | Conference paper
EID:

2-s2.0-85065334343

Contributors: Roux, G.J.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Flight results of the nSight-1 QB50 CubeSat mission

Advances in the Astronautical Sciences
2018 | Conference paper
EID:

2-s2.0-85049383317

Contributors: Visagie, L.; Steyn, W.H.; Burger, H.; Malan, D.F.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Removedebris preliminary mission results

Proceedings of the International Astronautical Congress, IAC
2018 | Conference paper
EID:

2-s2.0-85063035862

Contributors: Taylor, B.; Aglietti, G.S.; Fellowes, S.; Salmon, T.; Hall, A.; Chabot, T.; Pisseloup, A.; Ainley, S.; Tye, D.; Retat, I. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

The UNISEC-global new vision 2030-all

Proceedings of the International Astronautical Congress, IAC
2018 | Conference paper
EID:

2-s2.0-85065341220

Contributors: Kawashima, R.; Ibrahim, M.K.; Aslan, A.R.; Cho, M.; Steyn, H.; Schilling, K.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Final payload test results for the RemoveDebris active debris removal mission

Acta Astronautica
2017 | Journal article
EID:

2-s2.0-85020864727

Contributors: Forshaw, J.L.; Aglietti, G.S.; Salmon, T.; Retat, I.; Roe, M.; Burgess, C.; Chabot, T.; Pisseloup, A.; Phipps, A.; Bernal, C. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

The removedebris adr mission: Launch from the ISS, operations and experimental timelines

Proceedings of the International Astronautical Congress, IAC
2017 | Conference paper
EID:

2-s2.0-85049392281

Contributors: Forshaw, J.L.; Aglietti, G.S.; Salmon, T.; Retat, I.; Hall, A.; Chabot, T.; Pisseloup, A.; Tye, D.; Bernal, C.; Chaumette, F. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

An active attitude control system for a drag sail satellite

Acta Astronautica
2016 | Journal article
EID:

2-s2.0-84980319898

Contributors: Steyn, W.H.; Jordaan, H.W.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

RemoveDEBRIS: An in-orbit active debris removal demonstration mission

Acta Astronautica
2016 | Journal article
EID:

2-s2.0-84976554882

Contributors: Forshaw, J.L.; Aglietti, G.S.; Navarathinam, N.; Kadhem, H.; Salmon, T.; Pisseloup, A.; Joffre, E.; Chabot, T.; Retat, I.; Axthelm, R. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Review of final payload test results for the removedebris active debris removal mission

Proceedings of the International Astronautical Congress, IAC
2016 | Conference paper
EID:

2-s2.0-85016488744

Contributors: Forshaw, J.L.; Aglietti, G.S.; Salmon, T.; Retat, I.; Roe, M.; Burgess, C.; Chabot, T.; Pisseloup, A.; Phipps, A.; Bernal, C. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

1AC-15-B4.6B.6 Development of a dual gimbal control moment gyro for nano-satel.lites

Proceedings of the International Astronautical Congress, IAC
2015 | Conference paper
EID:

2-s2.0-84991474999

Contributors: Steyn, D.G.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

An In-Orbit active debris removal mission - Removedebris: Pre-launch update

Proceedings of the International Astronautical Congress, IAC
2015 | Conference paper
EID:

2-s2.0-84992221970

Contributors: Forshaw, J.L.; Aglietti, G.; Navarathinam, N.; Kadhem, H.; Salmon, T.; Joffre, E.; Chabot, T.; Relat, I.; Axthelm, R.; Barraclough, S. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

IAC-I5-B4.6A 1 An active attitude control system for a drag sail satellite

Proceedings of the International Astronautical Congress, IAC
2015 | Conference paper
EID:

2-s2.0-84991448172

Contributors: Steyn, W.H.; Jordaan, H.W.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

An attitude control system for the deployment and stabilisation of a tethered dual CubeSat mission

IFAC Proceedings Volumes (IFAC-PapersOnline)
2014 | Conference paper
EID:

2-s2.0-84929815648

Contributors: Kearney, M.-A.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

An attitude control system for ZA-aerosat subject to significant aerodynamic disturbances

IFAC Proceedings Volumes (IFAC-PapersOnline)
2014 | Conference paper
EID:

2-s2.0-84929832508

Contributors: Steyn, W.H.; Kearney, M.-A.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Arcminute attitude estimation for cubesats with a novel nano star tracker

IFAC Proceedings Volumes (IFAC-PapersOnline)
2014 | Conference paper
EID:

2-s2.0-84929833748

Contributors: Erlank, A.O.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Hyperspectral imaging with Nanosats

Proceedings of the International Astronautical Congress, IAC
2014 | Conference paper
EID:

2-s2.0-84937721100

Contributors: Jacobs, M.; Mostert, S.; Burger, H.; Steyn, W.; Merton, R.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Performance measurements of a medium-current short-pulsed vacuum arc thruster

Experimental Techniques
2014 | Journal article
EID:

2-s2.0-84899505043

Contributors: Lun, J.; Dobson, R.T.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

RemoveDEBRIS: An EU low cost demonstration mission to test ADR technologies

Proceedings of the International Astronautical Congress, IAC
2014 | Conference paper
EID:

2-s2.0-84937723846

Contributors: Lappas, V.J.; Forshaw, J.L.; Visagie, L.; Pisseloup, A.; Salmon, T.; Joffre, E.; Chabot, T.; Retat, I.; Axthelm, R.; Barraclough, S. et al.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

A comparison of control techniques for dairy falling film evaporators

IFAC Proceedings Volumes (IFAC-PapersOnline)
2013 | Conference paper
EID:

2-s2.0-84896335366

Contributors: Haasbroek, A.; Auret, L.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Advanced control with fundamental and data-based modeling for falling film evaporators

Proceedings of the IEEE International Conference on Industrial Technology
2013 | Conference paper
EID:

2-s2.0-84877600954

Contributors: Haasbroek, A.; Steyn, W.H.; Auret, L.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

An attitude control system for the deployment and stabilisation of a tethered dual CubeSat mission

IEEE AFRICON Conference
2013 | Conference paper
EID:

2-s2.0-84897446555

Contributors: Kearney, M.-A.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Current and future small satellite projects in South Africa

International Geoscience and Remote Sensing Symposium (IGARSS)
2013 | Conference paper
EID:

2-s2.0-84894269423

Contributors: Steyn, W.H.; Van Zyl, R.; Inggs, M.; Cilliers, P.J.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Low cost fault tolerant techniques for nano/pico-satellite applications

IEEE AFRICON Conference
2013 | Conference paper
EID:

2-s2.0-84897391163

Contributors: Botma, P.J.; Barnard, A.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

An optimal image transform for threshold-based cloud detection using heteroscedastic discriminant analysis

International Journal of Remote Sensing
2011 | Journal article
EID:

2-s2.0-79953225171

Contributors: van Zyl Marais, I.; du Preez, J.A.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Attitude control actuators, sensors and algorithms for a solar sail Cubesat

62nd International Astronautical Congress 2011, IAC 2011
2011 | Conference paper
EID:

2-s2.0-84864082064

Contributors: Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

CubeSail: A low cost CubeSat based solar sail demonstration mission

Advances in Space Research
2011 | Journal article
EID:

2-s2.0-80054083838

Contributors: Lappas, V.; Adeli, N.; Visagie, L.; Fernandez, J.; Theodorou, T.; Steyn, W.; Perren, M.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Cubesat solar sail 3-axis stabilization using panel translation and magnetic torquing

Aerospace Science and Technology
2011 | Journal article
EID:

2-s2.0-80052260245

Contributors: Steyn, W.H.; Lappas, V.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

DEORBITSAIL: De-orbiting of satellites using solar sails

2nd International Conference on Space Technology, ICST 2011
2011 | Conference paper
EID:

2-s2.0-82055204922

Contributors: Lappas, V.; Pellegrino, S.; Guenat, H.; Straubel, M.; Steyn, H.; Kostopoulos, V.; Sarris, E.; Takinalp, O.; Wokes, S.; Bonnema, A.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Design of an aerodynamic attitude control system for a CubeSat

62nd International Astronautical Congress 2011, IAC 2011
2011 | Conference paper
EID:

2-s2.0-84864078538

Contributors: Auret, J.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Modular simulation and visualisation application for satellite attitude control

62nd International Astronautical Congress 2011, IAC 2011
2011 | Conference paper
EID:

2-s2.0-84864107250

Contributors: Visagie, L.; Steyn, W.H.; Lappas, V.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Cubesat solar sail attitude determination and control system hardware design and orbital analysis

AIAA/AAS Astrodynamics Specialist Conference 2010
2010 | Conference paper
EID:

2-s2.0-84880775842

Contributors: Lappas, V.; Adeli, N.; Visagie, L.; Theodorou, T.; Fernandez, J.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Determining vacuum-arc thruster performance using a cathode-spot model

Journal of Propulsion and Power
2010 | Journal article
EID:

2-s2.0-77954943199

Contributors: Lun, J.; Dobson, R.T.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

In-orbit AODCS performance of Sumbandilasat an earth observation satellite

61st International Astronautical Congress 2010, IAC 2010
2010 | Conference paper
EID:

2-s2.0-79959459427

Contributors: Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

A dual-wheel multi-mode spacecraft actuator for near-minimum-time large angle slew maneuvers

Aerospace Science and Technology
2008 | Journal article
EID:

2-s2.0-51649083284

Contributors: Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

An attitude control system for SumbandilaSAT an earth observation satellite

European Space Agency, (Special Publication) ESA SP
2008 | Conference paper
EID:

2-s2.0-58149168515

Contributors: Steyn, W.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Construction of an image quality assessment model for use on board an LEO satellite

International Geoscience and Remote Sensing Symposium (IGARSS)
2008 | Conference paper
EID:

2-s2.0-66549117392

Contributors: Van Zyi Marais, I.; Steyn, W.H.; Du Preez, J.A.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Kalman filter configurations for a low-cost loosely integrated inertial navigation system on an airship

Control Engineering Practice
2008 | Journal article
EID:

2-s2.0-50649086354

Contributors: Bijker, J.; Steyn, W.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Sumbandilasat-An operational technology demonstrator

Acta Astronautica
2008 | Journal article
EID:

2-s2.0-53049098702

Contributors: Mostert, S.; Steyn, H.; Burger, H.; Bosman, H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

A control system analysis for a potential small geostationary satellite for South Africa

IEEE AFRICON Conference
2007 | Conference paper
EID:

2-s2.0-48649106150

Contributors: Thopil, G.A.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Low cost TID testing of COTS components

Proceedings of the European Conference on Radiation and its Effects on Components and Systems, RADECS
2007 | Conference paper
EID:

2-s2.0-70449587177

Contributors: Barnard, A.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Robust defocus blur identification in the context of blind image quality assessment

Signal Processing: Image Communication
2007 | Journal article
EID:

2-s2.0-35648992523

Contributors: Marais, I.v.Z.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

SumbandilaSat - An operational technology demonstrator

International Astronautical Federation - 58th International Astronautical Congress 2007
2007 | Conference paper
EID:

2-s2.0-54949110575

Contributors: Mostert, S.; Steyn, H.; Burger, H.; Bosman, H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

A view finder control system for an earth observation satellite

Aerospace Science and Technology
2006 | Journal article
EID:

2-s2.0-33645983229

Contributors: Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier

Attitude determination and control subsystem hardware in the loop test on air bearing trolley

Collection of Technical Papers - AIAA Guidance, Navigation, and Control Conference 2006
2006 | Conference paper
EID:

2-s2.0-33845752978

Contributors: Soh, W.K.; Hamzah, N.; Steyn, W.H.
Source: Self-asserted source
Willem Steyn via Scopus - Elsevier
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