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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: 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: A Comprehensive Assessment of Collision Likelihood in Geosynchronous Earth Orbit

  • Dan Oltrogge
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Knowing the likelihood of collision for satellites is of extreme importance and interest to the global space community

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White Paper: An Analysis of State Vector Prediction Accuracy

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The requirements for precise orbit determination (OD) and propagation are becoming commonplace as numerical operations become standard.

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White Paper: Analysis Of The Response Of A Space Surveillance Network To Orbital Debris Events

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Minimizing space debris and mitigating the consequences of near Earth orbital debris have been serious issues for several years

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White Paper: Status Report of AGI’s Commercial Space Operations Center and other AGI SSA Initiatives

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Status Report of AGI’s Commercial Space Operations Center and other AGI SSA Initiatives

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White Paper: Advances in Satellite Conjunction Analysis

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This paper explores the use of operational methodologies for appropriately thinning the resultant large data sets

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White Paper: How the Space Data Center Is Improving Safety of Space Operations

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This paper will address how the SDC will use a service-oriented architecture (SOA) to support orbital operations.

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White Paper: Multi-Phenomenology Observation Network Evaluation Tool (MONET)

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This paper describes the multi-phenomenology observation network evaluation tool.

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Technical analysis of commercially hosted optical payloads for enhanced SSA

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This paper describes technical analysis of commercially hosted optical payloads for enhanced SSA.

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White Paper: Verifying Observational Data For Real-World Space Situational Awareness

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This paper describes the processes for the routine OD evaluations including the activities required to assemble and process the data.

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White Paper: A Description Of Filters For Minimizing The Time Required For Orbital Conjunction Computations

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The identification of potentially dangerous conjunctions is most commonly done by determining periods of time when objects have the risk of collision

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White Paper: Analysis of the Iridium 33-Cosmos 2251 Collision

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On 2009 February 10, Iridium 33—an operational US communications satellite in low-Earth orbit—was struck and destroyed by Cosmos 2251

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White Paper: Evaluating The Short Encounter Assumption Of The Probability Of Collision Formula

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This paper shows how to evaluate the short encounter assumption of the probability of the collision formula.

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White Paper: Including Velocity Uncertainty In The Probability Of Collision Between Space Objects

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The paper includes velocity uncertainty in the probability of collisions between space objects.

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White Paper: An Analysis of State Vector Propagation Using Differing Flight Dynamics Programs

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The use of numerically generated state vectors for satellite operations is not new

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