EOIR Configuration

To select STK objects for possible inclusion in the generated scene and make sensors available to generate radiometric results:

  1. Click on the EOIR toolbar to display the sensor's EOIR Configuration.

    2. All central bodies and objects, except for the source sensor, that are part of the EOIR Configuration are listed in the available target list.

    EOIR pattern sensors and their parent objects are automatically added to the EOIR configuration. If a parent containing an EOIR sensor is copied, the copied sensor will be similarly added to the EOIR configuration. If a sensor is changed from an EOIR pattern to a non-EOIR pattern or the EOIR pattern sensor is deleted, the sensor is removed from the EOIR configuration but the parent object will remain. If an object in the EOIR configuration is deleted from STK, then the object is automatically deleted from the EOIR configuration.

    • For a sensor to be available for radiometric calculations and simulated scene images, its platform (e.g., parent aircraft, facility, place, target, missile or satellite) must in the Selected Targets list.
    • Stars are automatically included from the active STK star collection specified on the Scenario's Basic Database properties page.
  2. Use the right arrow button to move STK objects to and from the Selected Targets list. Objects in the Selected Targets list are imaged by an EOIR sensor under these conditions:
    • They fall within the sensor's Field of View.
    • They are sufficiently bright in either reflected light or self-radiance at wavelengths to which the sensor is sensitive.

    Objects in the Selected Targets list are shared in common among all the EOIR sensors. Each object has a unique state at any given instance of time, but different EOIR sensors can view the same object from various different perspectives (geometries).

  3. To define the atmosphere mode and select an aerosol model, click Atmosphere Definition....

The following are known EOIR limitations with non-Earth central bodies:

  • EOIR models only the following non-Earth bodies: Earth's moon, Sun, Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune.
  • EOIR does not work with the Planetary Data Supplement central bodies.
  • EOIR uses floating point positions and orientations, which can cause pointing issues appearing as jitter when targeting objects over interplanetary distances.
  • EOIR does not consider light time delay (LTD), it uses instantaneous light transmission, which can cause inconsistencies with STK access calculations using LTD and illumination conditions interplanetary distances.

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