Simulation 3D Space Environment

R2026b

Configure 3D Earth or Moon Scene from UTC Julian date input

Since R2026a

• 

Simulation 3D Space Environment block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Aerospace Blockset / Animation / Simulation 3D

Description

Add-On Required: This feature requires the Ephemeris Data for Aerospace Toolbox add-on.

The Simulation 3D Space Environment block configures Earth and Moon scenes by calculating setup parameters from start date and time, ambient light, and sunlight levels, synchronizing scene selection with the Simulation 3D Scene Configuration block.

Parameters

To edit block parameters interactively, use the Property Inspector. From the Simulink^® Toolstrip, on the Simulation tab, in the Prepare gallery, select Property Inspector.

Scene to configure — Select 3D scene to configure

Earth (default) | Moon|None

Select the 3D scene to configure, specified as one of Earth, Moon or None.

Dependencies

This parameter is available unless a Simulation 3D Scene Configuration block is in the model canvas, Scene source is set to Default scenes, and the Earth or Moon scene is selected. In that case the block is automatically synchronized with the scene selection in the Simulation 3D Scene Configuration block.

Programmatic Use

Block Parameter: Map

Type: char

Values:Earth|Moon|None

Default: Earth

Start date and time (UTC Julian date) — Start date or time

juliandate(2020, 6, 1, 12, 0, 0) (default) | juliandate value

Start date or time, specified as a juliandate.

Dependencies

• Julian date value must be between 2305424.5 and 2525008.5 for the DE405 ephemerides database currently in use. This database is periodically updated, so the range of acceptable date values are subject to change.

Programmatic Use

Block Parameter: StartJD

Values:juliandate(2020, 6, 1, 12, 0, 0)|juliandate value

Default: juliandate(2020, 6, 1, 12, 0, 0)

Ambient Intensity — Ambient light intensity

1 (default) | real nonnegative scalar

Ambient light intensity, specified as a real nonnegative scalar.

Programmatic Use

Block Parameter: AmbientIntensity

Values:1| real nonnegative scalar

Default: 1

Sun light intensity (lux) — Intensity of direct sunlight in 3D scene

10 (default) | real nonnegative scalar

Intensity of direct sunlight in 3D scene, specified as a real nonnegative scalar.

Programmatic Use

Block Parameter: SunLightIntensity

Values:10| real nonnegative scalar

Default: 10

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"aerolibsim3d/Simulation 3D Space Environment"

Example: add_block("aerolibsim3d/Simulation 3D Space Environment","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2026a

R2026b: Simulation 3D Space Environment block uses double precision for Unreal Engine communications

The Simulation 3D Space Environment block now uses double precision for all communications with Unreal Engine^®.