Holger Krag

发表

Conjunction Evolutions: The Process of Adapting and Evolving Operational Collision Warning Software from Server to Service Oriented Architecture

E. Fletcher, Vicente Navarro, Luis Ángel Guerras Martín, 2012 .

Modeling the Space Debris Environment with MASTER-2009 and ORDEM2010

Holger Krag, S. Flegel, Johannes Gelhaus, 2010 .

ESA activities on satellite laser ranging to non-cooperative objects

Holger Krag, Tim Flohrer, Quirin Funke, 2016 .

Update of ESA DRAMA ARES: Comparison of Envisaged Collision Alerts with Operational Statistics and Impact of Catalogue Accuracy

Holger Krag, Johannes Gelhaus, Raoul Dominguez-gonzalez, 2013 .

ESA’s process for the identification and assessment of high-risk conjunction events

Holger Krag, Heiner Klinkrad, T. Flohrer, 2009 .

Introducing upcoming Enhancements of MASTER including S/C Fragmentation Models

Holger Krag, Carsten Wiedemann, Paulo Gordo, 2016 .

Assessment and Categorization of TLE Orbit Errors for the US SSN Catalogue

Holger Krag, Tim Flohrer, Heiner Klinkrad, 2008 .

Computation of Cross Section of Complex Bodies in ESA DRAMA Tool

Holger Krag, Johannes Gelhaus, Noelia Sanchez-ortiz, 2013 .

Feasibility of performing space surveillance tasks with a proposed space-based optical architecture

Holger Krag, Thomas Schildknecht, Heiner Klinkrad, 2011 .

Collision Probability Assessment for the RapidEye Satellite Constellation

Holger Krag, Benjamin Bastida Virgili, Enrico Stoll, 2013 .

Environment capacity as an early mission design driver

Holger Krag, Stijn Lemmens, Francesca Letizia, 2020 .

Mega-constellations Issues

Holger Krag, Benjamin Bastida Virgili, 2016 .

Using Parallel Computing for the Display and Simulation of the Space Debris Environment

Holger Krag, S. Flegel, Johannes Gelhaus, 2010 .

Evaluation of minimum coverage size and orbital accuracy at different orbital regimes for one order of magnitude reduction of the catastrophic collision risk

Holger Krag, Noelia Sanchez-ortiz, Raul Dominguez-gonzalez, 2015 .

Assessment of breakup severity on operational satellites

Holger Krag, Hugh G. Lewis, Camilla Colombo, 2016 .

Analysis of CDM Covariance Consistency in Operational Collision Avoidance

Holger Krag, Benedikt Reihs, Stijn Lemmens, 2017 .

Deriving a priority list based on the environmental criticality

Holger Krag, Jonas Radtke, Christopher Kebschull, 2014 .

Impact on mission design due to collision avoidance operations based on TLE or CSM information

Holger Krag, Noelia Sanchez-ortiz, Raul Dominguez-gonzalez, 2015 .

Upgrade of the ESA DRAMA OSCAR Tool: Analysis of Disposal Strategies Considering Current Standards for Future Solar and Geomagnetic Activity

Holger Krag, Johannes Gelhaus, Carsten Wiedemann, 2013 .

Space Surveillance and Tracking in ESA's SSA programme

Holger Krag, Tim Flohrer, 2017 .

Current Collision Avoidance service by ESA's Space Debris Office

Holger Krag, Tim Flohrer, Benjamin Bastida Virgili, 2017 .

Next-generation Space Object Radar Tracking Simulator: SORTS++

Holger Krag, Sebastian Hesselbach, Tom Grydeland, 2019 .

Exploiting Orbital Data and Observation Campaigns to Improve Space Debris Models

Holger Krag, Benedikt Reihs, Andre Horstmann, 2019 .

The Software Architecture of the Upgraded ESA DRAMA Software Suite

Holger Krag, S. Flegel, Johannes Gelhaus, 2013 .

Extending the ECOB space debris index with fragmentation risk estimation

Holger Krag, Hugh G. Lewis, Camilla Colombo, 2017 .

Development of a Debris Index

Holger Krag, Hugh G. Lewis, Camilla Colombo, 2018 .

The European Surveillance and Tracking System - Services and Design Drivers

Villafranca del Castillo, Holger Krag, Tim Flohrer, 2010 .

Low Earth Orbit objects tracking and orbit determination from ground-based phased array radar systems

Holger Krag, Tim Flohrer, Piermario Besso, 2011, 2011 12th International Radar Symposium (IRS).

Risk assessment of recent high-interest conjunctions

Holger Krag, Daniel Oltrogge, Salvatore Alfano, 2021, Acta Astronautica.

A simplified approach to analyze the space debris evolution in the low earth orbit

Holger Krag, S. Flegel, Johannes Gelhaus, 2014 .

CREAM-ESA's Proposal for Collision Risk Estimation and Automated Mitigation

Holger Krag, Tim Flohrer, Benjamin Bastida Virgili, 2019 .

Consideration of Space Debris Mitigation Requirements in the Operation of LEO Missions

Holger Krag, H. Krag, 2012 .

THE EUROPEAN SPACE SURVEILLANCE SYSTEM – REQUIRED PERFORMANCE AND DESIGN CONCEPTS

Holger Krag, Tim Flohrer, Emmet Fletcher, 2010 .

SENSITIVITY OF THE SPACE DEBRIS ENVIRONMENT TO LARGE CONSTELLATIONS AND SMALL SATELLITES

Holger Krag, Alessandro Rossi, Hugh G. Lewis, 2017 .

Comparison of Meteoroid Flux Models for Near Earth Space

Holger Krag, Gerhard Drolshagen, Markus Landgraf, 2008 .

Global Trends in Achieving Successful End-Of-Life Disposal in LEO and GEO

Holger Krag, Tim Flohrer, Heiner Klinkrad, 2014 .

Debris model validation and interpretation of debris measurements using ESA's proof tool

Holger Krag, Thomas Schildknecht, J. Rosebrock, 2001 .

Use of EISCAT 3D for Observations of space debris

Holger Krag, Alexandru Mancas, Juha Vierinen, 2017 .

Impact of GPS and GALILEO Orbital Plane Drifts on Interoperability Performance Parameters

Holger Krag, Gerard Lachapelle, Arian Leonard, 2003 .

Space based optical observation of small debris objects

Holger Krag, H. Klinkrad, T. Schildknecht, 2001 .