Astrogator FAQs

Creating a Rectangular Area Target Using Distance Dimensions

• Aug 8, 2022
• How To

Here's a step-by-step tutorial on how to create a rectangular area target.

Restrict a Satellite's Yaw, Pitch, and Roll angles

• Dec 10, 2019
• How To

How to Create and Maintain the Tundra Orbit

• Mar 29, 2018
• FAQ

To create a tundra orbit when inserting a new satellite, use the orbit wizard.

Offscreen Rendering Issue: Taking Snapshots Larger Than Your Screen Resolution

• May 25, 2016
• FAQ

This article provides the steps to do it.

Customize Chain Access AER Report

• Oct 26, 2015
• FAQ

This article explains how to customize an Access AER report to show the elevation angles between a satellite and two or more ground stations on the...

I'm a Student. How Do I Get My STK Educational Licenses?

• May 22, 2015
• FAQ

Desktop Products and Installs on the AGI Downloads Page

• Apr 23, 2024
• How To

This excerpt explains how to download STK after you have received your license(s). You should have a Pro, Premium, or Enterprise licensing package....

How Does SNOPT Compare to the Differential Corrector?

• Jun 21, 2018
• FAQ

This article discusses SNOPT settings and how they differ from the differential corrector.

Downloading and Using Ephemerides for Comets, Asteroids, Small Bodies, and Interplanetary Spacecraft

• Jun 17, 2021
• FAQ

This FAQ explains where to find ephemerides for comets, asteroids, small bodies, and interplanetary spacecraft and how to load them into STK.

AGI Customer Community – Licensing Portal & Management

• Mar 23, 2026
• FAQ

FAQ for Ansys Support Coordinators and Licensing Portal Administrators moving from the Ansys Licensing Portal to the AGI Licensing Portal.

DME Data Distribution Site Restoration Update (Formerly https://ftp.agi.com)

• Dec 2, 2025
• FAQ

Providing current functionality update on the DME data distribution site (formerly https://ftp.agi.com) and

EOIR's Bidirectional Reflectance Distribution Function

• May 12, 2023
• FAQ

This article explains how STK's EOIR capability uses two different BRDFs to measure photon reflections from a surface material.

Exporting Volumetric Data Best Practices

• Feb 1, 2016
• FAQ

This article provides guidance on exporting Volumetric data.

Creating a Slew Rate for a Target Pointing Sensor

• Nov 4, 2016
• FAQ

Here are steps for making a sensor slew when switching between two different pointing targets.

How Does the High-Precision Orbit Propagator (HPOP) Work?

• Oct 14, 2021
• FAQ

This is a high-level overview on how HPOP works.

How does STK Compute C/N for a Laser Link?

• May 28, 2015
• FAQ

This article provides some details about the equation that STK uses in computing C/N for a laser Link.

Setting Up HLA Data Feeds in STK

• Nov 14, 2022
• FAQ

This article describes the steps needed to set up HLA (High Level Architecture) data feeds using STK.

Why am I Getting "Error 1311: Source File not found" When Installing MATLAB Connectors?

• Apr 19, 2016
• FAQ

This article provides insight into handling this error message.

Can the Reference Ellipsoid Used by STK be Changed?

• May 28, 2015
• FAQ

By default, STK uses a WGS84 Earth model. You can change this by editing the Earth.cb file.

How to Use Power Control to Maintain a Constant Flux Density in STK Communications

• Jul 11, 2018
• FAQ

You can create a transmitter model plugin script for this purpose.