Indian Space Research Organization (ISRO) has successfully undocked the SpaDex satellite | Current Affairs | Vision IAS
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Indian Space Research Organization (ISRO) has successfully undocked the SpaDex satellite

Posted 17 Mar 2025

2 min read

This follows successful docking of two satellites - SDX01 (Chaser) and SDX02 (Target) which was achieved in January 2025.

  • This made India the fourth nation, after United States, Russia, and China, to demonstrate in-space docking technology.

About SpaDeX Mission

  • SpaDeX is a technology demonstrator mission designed to develop and showcase in-space docking, rendezvous, and undocking capabilities using two small satellites- SDX01 (Chaser) and SDX02 (Target).
  • These satellites were launched aboard PSLV-C60.
  • SpaDeX spacecraft were designed and realized by UR Rao Satellite Centre (URSC), Bengaluru with the support of other ISRO centers (VSSC, LPSC, SAC, IISU, and LEOS).
    • Established in 1976, URSC is lead centre of ISRO responsible for design, development, assembly & integration of communication, navigation, remote sensing, scientific and small satellite missions.

Technological Innovations in SpaDeX

The image titled "Significance of Mission" presents four key aspects of an Indian space mission's importance. These aspects include:  Enabling Future Space Missions – Supporting deep-space missions like lunar sample return and interplanetary exploration. Developing Bharatiya Antariksh Station – Aiding in the creation of India's planned space station. Supporting Crewed Lunar Missions – Essential for future human spaceflight under Gaganyaan and beyond. Advancing In-Space Servicing & Robotics – Demonstrating power transfer and robotic servicing for satellite maintenance.
  • Docking Mechanism: A low-impact, androgynous docking system for smooth connection between the spacecraft.
  • Inter-Satellite Communication Link (ISL): Enables real-time data transfer between spacecraft.
  • GNSS-Based Relative Orbit Determination: Ensures precise navigation and control during docking.
  • Power Transfer Technology: Demonstrates energy transfer between docked satellites.
  • Autonomous Rendezvous and Docking Algorithms: Used for precise maneuvering of satellites in orbit.

Post-Docking Applications

  • After docking and undocking, satellites will continue independent payload operations. These include:
    • High-Resolution Imaging (SDX01): Capturing images for Earth observation.
    • Multi-Spectral Payload (SDX02): Monitoring natural resources and vegetation.
    • Radiation Monitoring (SDX02): Studying space radiation for future human missions.
  • Tags :
  • SPADEX
  • Space Docking
  • Undocking
  • Future Space Missions
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