Japan Aerospace Exploration Agencys

The data transmission experiments of "Sentinel Asia"

Experiment Date

December 11, 2014

Experiment Agency


Location of Experiment

JAXA Tsukuba Space Center


Outline of Experiment

  JAXA provide images captured by earth observation satellite as a part of the activities of "Sentinel Asia". "Sentinel Asia" is the activity to utilize space technologies, especially remote sensing technologies for disaster management of Asia-Pacific region.

  As a part of the activities of "Sentinel Asia", JAXA transmit the images using "Kizuna". Normally, the images are provided for participating organizations by using ground communication line. However, in some regions, the amount of data which can be transmitted is limited, because the bandwidth of ground communication line is narrow. So, for each narrow band regions, the data is transmitted four days of every month using "Kizuna" communication line.

  For data transmission using "Kizuna" on December 11, 2014, after 22nd typhoon was passed, "DAICH-2 (ALOS-2)" emergency observation images of Philippines damage were transmitted to ADVANCED SCIENCE AND TECHNOLOGY INSTITUTE (ASTI). These images were used to grasp the disaster situation for Philippines.

* Emergency observation: Observation planned urgently according to occurrence of large-scale disaster and so on.

"Kizuna" Earth Station at ASTI

Experiment Results

  "DAICH-2 (ALOS-2)" observation image data was archived in "Sentinel Asia" server placed at Tsukuba Space Center via ground network. After the Philippines typhoon was occurred, the observation image data was sent to server placed at ASTI via "Kizuna". These images were used to grasp disaster situation.