| Products & Services | Solutions | Academia | Support | User Community | Company |
| Download Product Updates | | | Get Pricing | | | Trial Software |
| Documentation → Aerospace Blockset |
| Contents | Index |
| Learn more about Aerospace Blockset |
Utilities/Axes Transformations

The Besselian Epoch to Julian Epoch block transforms two
3-by-1 vectors of Besselian Epoch position
,
and Besselian Epoch velocity
into Julian Epoch position
,
and Julian Epoch velocity
. The transformation is calculated using:
![]()
where
are defined as:





| Input | Dimension Type | Description |
|---|---|---|
| First | 3-by-1 vector | Contains the position in Standard Besselian Epoch (B1950). |
| Second | 3-by-1 vector | Contains the velocity in Standard Besselian Epoch (B1950). |
| Output | Dimension Type | Description |
|---|---|---|
| First | 3-by-1 vector | Contains the position in Standard Julian Epoch (J2000). |
| Second | 3-by-1 vector | Contains the velocity in Standard Julian Epoch (J2000). |
"Supplement to Department of Defense World Geodetic System 1984 Technical Report: Part I - Methods, Techniques and Data Used in WGS84 Development," DMA TR8350.2-A.
Julian Epoch to Besselian Epoch
![]() | Angular Velocity Conversion | Calculate Range | ![]() |

Learn more about Simulink through this collection of videos, articles, technical literature and the Getting Started with Simulink Guide.
| © 1984-2009- The MathWorks, Inc. - Site Help - Patents - Trademarks - Privacy Policy - Preventing Piracy - RSS |