IRIS-A Satellite

Name IRIS-A (Intelligent Remote-Sensing and Internet Satellite)
Type CubeSat
Units or mass 2U
Status Operational (Numerous amateur radio reports last checked on 2022-05-26)
Launched 2022-01-13
NORAD ID 51044
Deployer QuadPack (XL) [ISISpace]
Launcher Falcon 9 (Transporter-3)
Entity name National Cheng Kung University
Institution University
Entity type Academic / Education
Headquarters Taiwan
Launch brokerer Momentus
Partners Odysseus Space

Test technology to improve the quality of downlink signals.


Demonstrate Internet of Things.

Challenge is the lack of frequency bandwidth for data communication. Key features implemented in payload:

  • Auto recognition - find the registered GS by satellite itself.
  • Auto frequency allocation assigned by the connected GS.
  • Handover mechanism from one GS to another.

Odysseus Space is providing pre-launch testing and arranging launch services.

The mission of the LoRa receiver (433.365MHz) is to collect weak LoRa signals from the ground terminals of amateur radio operators. In order to understand the issue of Doppler frequency shift and path lose, so that the ground signal can be measured on the uplink, stored and forward issue IRIS-A also provide FM voice transponder, allowing the operator to have both digital and voice operation modes. The students can learn to understand about each sub-system of satellite. The issues of Doppler frequency shift have always plagued the applications and creativity of amateur radio operator. Here, The LoRa payload receivers receive signals, through the Store and Forward, all Ham radio operators can have more creativity and application. According to the LoRa standard parameter settings we provide, Ham radio operator upload the data to IRIS then able to get uplink data from IRIS-A website through the store and forward function. In addition. The IRIS-A also provide FM voice transponder, allowing the operator to have both digital and voice operation modes. 


Taiwan's first locally made global positioning system (GPS) receiver for satellite missions has functioned normally and passed key environmental tests during nearly two months in space, raising hopes for Taiwan's home-grown satellite development program.

Sources [1] [2] [3] [4] [5] [6]
Photo sources [1] [2] [3] [4] [5] [6] [7]
COTS subsystems
  • ADM - ISIS Deployable Turnstile Antenna
  • ADCS - Adcole Maryland
  • OBC - ISIS
  • EPS - GomSpace NanoPower P31u
  • BATTERY - GomSpace NanoPower
Subsystems sources [1]
On the same launch

Last modified: 2024-05-29

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Created by Erik Kulu


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