Area of Interest

The Area of Interest asset represents a static geographic region. It is not a physical asset and does not provide position, velocity, or attitude queries. Instead, it stores polygons used by coverage, visualization, and geographic filtering workflows.

Role in ASTROLAB

Workflow	AOI role
Coverage analysis	Defines or filters the ground region to be covered.
2D visualization	Draws polygon regions on the map.
Reports	Provides geographic context for coverage results.

Data Model

flowchart LR
    A["AreaOfInterestAsset"] --> P["Polygons"]
    P --> C["lon/lat coordinates"]
    A --> M["Selection metadata"]
    A --> V["Visualization color"]

Main Parameters

Field	Meaning
polygons	List of polygons stored as (lon_deg, lat_deg) coordinates.
color_hex	Region display color.
selected_types	Selection metadata used by dialogs.
selected_countries	Country selection metadata used by dialogs.
description	Human-readable AOI description.
generic_properties	Future extension storage.

Notes

• AOIs are structural/geographic assets, not physical endpoints.
• They do not use Orekit directly.
• Coverage services can use AOIs to build or filter grid points.