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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: 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: Determination of close approaches for Earth fixed launch trajectories

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This paper shows how to determine close approaches for Earth fixed launch trajectories

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White Paper: A Preliminary Analysis of State Vector Prediction Accuracy

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This paper shows numerical results for propagating satellite state vectors against known POE’s and against precise ephemerides

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White Paper: Determination of close approaches for constellations of satellites

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This paper shows how to determine close approaches for constellations of satellites.

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White Paper: Getting To Know Our Space Population From The Public Catalog

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Our space population continues to increase as satellites are launched and debris producing catastrophic events occur.

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White Paper: Integration Of Orbit Trajectories In The Presence Of Multiple Full Gravitational Fields

  • Dr. Vince Coppola
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Describes the integration of trajectories in the presence of multiple full gravitational fields

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White Paper: Mitigation of the Effects of Eclipse Boundary Crossings

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This paper describes the mitigation of the effects of eclipse boundary crossings

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White Paper: Determination Of Orbit Cross-Tag Events And Maneuvers With Orbit Detective

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This paper shows how to determine the orbits of cross tag events and maneuvers with orbit detective.

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White Paper: Efficient Numerical Integration of Coupled Orbit and Attitude Trajectories

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This paper shows the efficient numerical integration of coupled orbit and attitude trajectories using and Encke Type correction algorithm

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White Paper: GPS Composite Clock Analysis

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This paper describes the GPS Composite clock analysis

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White Paper: Effects Of Cross Correlated Covariance On Spacecraft Collision Probability

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This paper shows the effects of cross correlated covariance on spacecraft collision probability.

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White Paper: Evaluating Gooding Angles-only Orbit Determination of Space Based Space Surveillance Measurements

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This paper shows how to evaluate the Gooding Angles using only Orbital Determination of space based space surveillance measurements.

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White Paper: Time Critical Targeting Using Responsive Tactical Satellites

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This paper will discuss the utility and technical feasibility of pre-deployed tactical satellites to achieve responsive space missions and needs.

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ODTK 7.0 Release

  • Nov 25, 2019
  • Tom Johnson
  • Blog Post

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Operators

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Make fast, reliable, and informed decisions. Stay ahead of threats.

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White Paper: Efficient Solutions Of Kepler’s Equation Via Hybrid And Digital Approaches

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This paper shows the efficient solutions of Kepler's equation via hybrid and digital approaches.

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White Paper: Goodness-Of-Fit Tests For Sequential Orbit Determination

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This paper shows the Goodness of fit tests for sequential orbit determination.

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White Paper: Least Squares GEO Initial Orbit Determination

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This paper describes a new fast-running algorithm to perform refined orbit determination for any spacecraft in GEO (geosynchronous earth orbit).

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Indian ASAT Forensics - April 9, 2019 Update

  • Tom Johnson, Dan Oltrogge, Dr. T.S. Kelso
  • Video

Analysis and debris simulation of India's direct ascent ASAT weapons test on 3-27-2019.

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