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White Paper: A Comparison of Lunar Landing Trajectory Strategies Using Numerical Simulations

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The paper describes the complete strategies for trajectory design from Earth-launch to Lunar landing.

Engineers

• Web Page

Solve aerospace and defense problems from design to operations.

Legal Info

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White Paper: Addressing Nonlinear Relative Motion For Spacecraft Collision Probability

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Linear methods for computing satellite collision probability can be extended to accommodate nonlinear relative motion.

White Paper: Deconfliction Scheduler Algorithms

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This paper is focused on the final piece, the scheduler algorithms and framework provided by Optwise Corporation.

White Paper: Effects of Eclipse Boundary Crossings on the Numerical Integration of Orbit Trajectories

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This paper shows the effects of eclipse boundary crossings on the numerical integration of orbit trajectories

White Paper: Long-Term Prediction of GPS Accuracy: Understanding the Fundamentals

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This paper will explore the obstacles inherent in predicting GNSS-based navigation accuracy.

White Paper: Optimal Time Transfer

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This paper describes optimal time transfer.

White Paper: Orbit Determination And Acquisition For LADEE And LLCD Mission Operations

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This paper describes the orbit determination results for the Lunar Atmospheric Dust Environment Explorer LADEE and LLCD missions.

White Paper: Parametric Optimization Of Closed-Loop Slew Control Using Interpolation Polynomials

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This paper describes parametric optimization of closed-loop slew control using interpolation polynomials

Revisiting Trajectory Design with STK Astrogator

• Dr. Cody Short, Austin Claybrook
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Improving the trajectory design and analysis process using STK Astrogator.

White Paper: Sequential Orbit-Estimation with Sparse Tracking

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This paper describes sequential orbit-estimation with sparse tracking.

White Paper: Space Standards, Rules, Innovation, and Inhibition

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This paper describes space standards, rules, innovation, and inhibition

White Paper: Sun-Mars Libration Points and Mars Mission Simulations

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This paper describes Sun-Mars libration points and Mars mission simulations

Percent Coverage by Region with Multiple Area Targets

• Jul 9, 2015
• FAQ

This article is based on defining a Coverage Definition object with two or more custom area targets as the regions, with the area targets...

Intelsat Antenna Pattern Format

• Feb 7, 2017
• FAQ

This article describes the format used in the ASCII Intelsat Antenna File used in STK.

Multitarget Satellite Pointing Using Nested Scheduled Vectors

• Apr 19, 2019
• FAQ

You can configure a satellite to perform sequential target pointing using a MATLAB script to generate a series of nested scheduled vectors for this...

How Can I Modify the Texture Image on an Existing 3D Globe (.glb) File or the 2D Pixmap Image?

• Oct 3, 2018
• FAQ

The following process outlines how to quickly change the texture of a globe as well as how to change the 2D Graphics pixmap image.

How can I Adjust the Density of the Background Star Field in STK?

• Oct 19, 2015
• FAQ

Integrating STK with Python - Archived Lesson

• Feb 19, 2021
• FAQ

There are two separate Integrating STK with Python lessons: one for STK 12.2 and later and one for STK 12.1 and earlier.