Astrogator FAQs

"The Program Can't Start Because VCRUNTIME140.dll is Missing"

• Mar 3, 2017
• FAQ

A missing DLL file may prevent the STK License Server from starting.

How to Convert CAD Models for Use in the STK Application

• Dec 31, 2015
• FAQ

These are best practices for converting CAD models for use in the STK Application.

Loading an STK Viewer File into Microsoft PowerPoint

• May 21, 2015
• FAQ

STK Viewer comes with an ActiveX control that you can load into PowerPoint so that you can display Viewer files (VDFs) in a presentation. This...

How do I Use a Transponder in an Interference Analysis?

• Aug 9, 2016
• FAQ

For STK 12.5 and later, see https://register.agi.com/training/on-demand/transponder/. For STK 12.4 and earlier, you need to combine data from a...

Where Do I Get TLE Information, TLE Supplemental Data, and Other TLE Resources?

• Jul 19, 2016
• FAQ

This article answers the following questions: What is a TLE? How do I add a satellite using a TLE within the STK application? Where does the TLE...

Constraining Coverage Definitions by Access Separation Between Multiple Constellations

• Oct 6, 2025
• How To

This article gives a brief overview on access separation constraints when a Coverage Definition object has two or more constellations assigned.

How Do I Create Pointing (Targeted / Scanning / Sweeping / Creeping-line) Sensors in STK?

• Sep 29, 2016
• FAQ

This article shows various methods to create "moving" sensors in STK.

Export Model Pointing Orientation Values

• Sep 2, 2015
• FAQ

This article describes how to report the orientation values of pointing 3D-model elements, such as solar panels on a satellite, in any reference...

Why do I Get a "Class is Not Registered" and/or "Personality Plugin 'STK' Load Failure" Error when Starting STK?

• May 27, 2015
• FAQ

This could result from several different issues. Please refer to the solutions below.

How Does STK Compute Bit Error Rate (BER)?

• May 21, 2015
• FAQ

STK determines the bit error rate either from a lookup table or from a formula based on Eb/No.

How Can I Use MATLAB to Automate a Position, Navigation, and Timing (PNT) Scenario?

• May 22, 2017
• FAQ

This article provides a sample script to demonstrate connecting MATLAB and STK for a PNT scenario.

What is the Reference Frame for AER Reports?

• May 22, 2015
• FAQ

How to Create a TLE File

• Dec 15, 2017
• FAQ

STK has many propagators that generate very accurate and complex orbits. Sometimes you need to represent these extremely dynamic orbits as a single...

Error Starting License Server

• May 10, 2016
• FAQ

This article explains how to prevent this error: "VD is starting, please check vendor daemon's status in debug log". The article applies to those...

Using EOIR Data Providers With STK Analyzer

• May 20, 2022
• FAQ

This article explains how to get EOIR-specific input data into trade study reports for EOIR. You will need to supply the appropriate EOIR predata...

Aviator "Under the Hood"

• Aug 10, 2018
• FAQ

Here are some expert insights into STK's Aviator capability from the AGI developers.

How Can I Add a Reference Line to My Graph in STK?

• Nov 17, 2016
• FAQ

You can use Analysis Workbench to create a scalar calculation and add it to the graph.

What is the difference between YPR and Euler attitude in STK?

• Sep 23, 2015
• FAQ

This is an explanation of the difference between the yaw-pitch-roll (YPR) attitude type and the Euler attitude types in STK. Most people understand...

What are the different ways I can license AGI products? How does each of the license types work?

• May 27, 2015
• FAQ

Where are the 3D Models within AGI's New Website?

• Apr 25, 2017
• FAQ

This article explains where 3D models can be found in AGI's new website.