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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.

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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.

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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.

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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

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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.

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White Paper: Optimal Time Transfer

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This paper describes optimal time transfer.

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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.

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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

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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.

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White Paper: Sequential Orbit-Estimation with Sparse Tracking

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This paper describes sequential orbit-estimation with sparse tracking.

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

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

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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

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White Paper: A Critical Assessment of Satellite Drag and Atmospheric Density Modeling

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This paper examines diverse approaches to representing gasdynamic drag effects on Low Earth Orbit (LEO) satellites.

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White Paper: Angles Only Three-Axis Attitude Determination

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The problem of determining the attitude from measurements of arc lengths or equivalently from measurements of dot products of vectors is examined

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White Paper: Efficient Covariance Interpolation Using Blending Of Approximate State Error Transitions

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This paper describes a new method for interpolating covariance in which an approximate state error transition is incorporated.

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White Paper: Ephemeris Requirements For Space Situational Awareness

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This paper describes the ephemeris requirements for Space Situational Awareness (SSA).

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White Paper: Estimation Of Instantaneous Maneuvers Using A Fixed Interval Smoother

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The analysis of these nearly instantaneous maneuvers is the focus of this study.

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White Paper: Integrated Surveillance Model for the Assessment of Surveillance Architectures and Operations

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This paper describes the integrated surveillance model for the assessment of surveillance architectures and operations

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White Paper: Parametric Characterization of SGP4 Theory and TLE Positional Accuracy

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This paper demonstrates the ability of “Enhanced GP” (EGP) to fit notional “truth orbits” derived from using a full-force modeling

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White Paper: QQ-Plot For Sequential Orbit Determination

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This paper describes QQ-Plot For sequential orbit determination.

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