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  The Japan Aerospace Exploration Agency (JAXA.) was established in 2003 as the integrated body of the former National Space Development Agency of Japan (NASDA), the former National Aerospace Laboratory of Japan (NAL) and the former Institute of Space and Astronautical Science (ISAS) to perform all their activities in the aerospace field from basic research to operation in outer space.

1. Management for Debris related works in JAXA

1.1 Organization

The Space Debris Coordinating Committee was assembled in 2006 to manage and make decision for all the subjects relating to space debris, and make. Its mission is to;
  • (1) coordinate among all the related departments in JAXA to promote debris relating activities,
  • (2) develop policies to coordinate with other domestic and international organizations,
  • (3) develop strategy for debris related R&D and review the planning and activities, and
  • (4) conduct other works relating to space debris.

1.2 Space Debris Mitigation Strategy

The principle policy toward space debris is,
  • (1) Mission assurance toward the risk of debris,
  • (2) Preservation of orbital environment.
  • (3) Safety assurance on the ground from re-entering space objects.
  • (4) International corporation to share the responsibility to assure the sustainability of space activities.

2. Allocation of function to the organization in JAXA

2.1 Management

The secretary of the Space Debris Coordinating Committee was performed by "Aerospace Research and Development Directorate" and "Safety and Mission Assurance Department".

2.2 Regulation and Review

The Safety and mission Assurance Department developed, registered and maintain the "JAXA Space Debris Mitigation Standard" and its support document. All the projects in JAXA are reviewed in the Safety Review Board for their debris mitigation plan.

2.3 R&D

Following R&D are being conducted by "Aerospace Research and Development Directorate".
  • (1) Observation and Modeling
    • a) Technology to observe GEO objects (10 cm class)
    • b) Optical observation for LEO objects
    • c) Dust sensor to detect sub-millimeter size
    • d) Propagation model to predict future population
  • (2) Protection
    • a) Hyper -Velocity impact testing and analysis to estimate the damage by impact of tiny debris, and develop shielding methods
    • b) Collision risk and damage analysis tool
  • (3) Re-entry safey
    • a) Research and development of a propellant tank which demise easily upon re-entry
    • b) Improvement of re-entry analysis tool
  • (4) Remediation
    • a) Active debris removal system using electrodynamics tether technology
  • (5) Other measures
    • a) Slag-less solid motor propellant

2.4 Observation and Collision avoidance

Observation of space objects, and conjunction assessment for operating spacecraft and launch vehicles are being conducted by "Consolidated Space Tracking and Data Acquisition Department"

2.5 Re-entry Safety

"Safety and mission Assurance Department" introduced the Re-entry Survivability Assessment Tool from US and is improving analysis functions and user interface.

2.6 Controlled reentry

"Space Transportation Mission Directorate" and "Human Space Systems and Utilization Mission Directorate" are conducting controlled re-entry for "H-IIB launch vehicle" and "H-II Transfer Vehicle (HTV)" respectively.