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ASIA PACIFIC SATELLITE INC
Striving for Space and Mankind

Space Technology

Data Link Subsystem (DLS)

Data link subsystem (DLS) is a payload subsystem consisting of Space Data Recorder (SDR), X-band Transmitter Assembly (XTA), and X-band Antenna Assembly (XAA).

Data link subsystem (DLS) is a payload subsystem consisting of Space Data Recorder (SDR), X-band Transmitter Assembly (XTA),  and X-band Antenna Assembly (XAA).       

DLS performs the function of storing high-resolution image data from the scanning sensor of the observation satellite, and transmitting the data to the ground station after converting it into RF signal.


Asia Pacific Satellite Inc. has the solution to design, manufacture, and verify high-speed DLS required for satellite missions by utilizing its SDR and COTS-based XTA.

Main Features

  • · Stores large data from scanning sensor of the payload and transmit data to the ground
  • · Consists of SDR, XTA, and XAA
  • · Can provide directional or Omni-directional antenna based solutions
  • · Can design DLS control/management functions using SDR

Key Performance

  • · X-band DLS for Korea Multi-Purpose Satellite 6 (KOMPSAT-6)

        • Key Specifications

        • ·Storage capacity: 512Gbits ~ 15Tbits
        • · Transmission format: CADU
        • · Output data rate: 300Mbps ~ 1.2Gbps
        • · 2:3 XTA redundancy (Modulator, HPA(TWTA or SSPA), RF switch, OMUX)
        • · Deployable X-band antenna (Antenna, Boom, Hinge, HRM)
        • · Tracking X-band antenna (Antenna, APD, APM, HRM)