This website provides information about the experiment operations of Kizuna (Wideband InterNetworking engineering test and Demonstration Satellite: WINDS) mainly performed or to be performed by JAXA, for the researchers and organizations who are planning to participate in the experiment operations, or considering the use of a satellite internet connection service in the future, and or interested in a satellite-based communication network technology or such information and telecommunication technology. You will find on this website the characteristics of Kizuna’s communication performance, the schedules and results of Kizuna (WINDS) experiments.
Kizuna, launched on February 23, 2008 (Japan Standard Time, JST) from the Tanegashima Space Center, is designed to have sophisticated data-communications features such as;
- Advanced data communications, both uplink and downlink, with the Ka-band Multi Beam Antenna (MBA) and the Ka-band Multi Port Amplifier (MPA),
- Wide coverage area with the Ka-band Active Phased Array Antenna (APAA) that enables beam-hopping communications,
- Enhanced signal quality with the ATM Baseband Switch (ABS), an onboard switcher, which demodulates and decodes the transmitted and received signals in order to correct bit errors occurred in a data uplink or a single-hop transmission process.
Kizuna is also designed to achieve ultra-high-speed data communications with a small aperture antenna (user terminal) at a ground receiving site. Users can enjoy Kizuna’s satellite-based high speed internet communication at a maximum data downlink rate of 155Mbps and at a maximum data uplink rate of 6Mbps by deploying a 45 cm diameter user antenna. With a 5 m diameter user antenna, ultra-high speed internet communications at a maximum downlink/uplink rate of 1.2Gbps will be available.
To verify those advanced features and communication performance of Kizuna, JAXA is conducting a series of experiments using Kizuna satellite. The experiments are classified into the following two types:
- WINDS Basic Experiments mainly performed by the WINDS Project Team (organized by the members from Japan Aerospace Exploration Agency (JAXA) and National Institute of Information and Communications Technology (NICT)) for determining the basic performance of the WINDS satellite.
- WINDS Application Experiments, mainly performed by participants for their evaluation on the application of the Kizuna communication network. The themes of the application experiments are selected by the Ministry of Internal Affairs and Communications (MIC) from the public offering.
The objectives of the Basic Experiment and the Application Experiments are defined as below.
- Basic Experiment:
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- Checkout of the performance of Kizuna communications network system
- Confirmation and verification of Kizuna integrated communication characteristics
- Application Experiment:
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- Data collections for the enhancement of high speed satellite communications
- Application development for satellite data communication
This website provides information about Kizuna (WINDS) experiments for researchers who are working in the field of satellite communication technologies and data communication technologies, and for people who are interested in such field.
- 2010,Oct.1
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[EXPERIMENTS] Basic Experiment Video Document
was added.
- 2010,Mar.26
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[EXPERIMENTS] Basic Experiment was added.
[EXPERIMENTS] Application Experiment Overview was added. - [LIMITED MEMBERS] Experiment Result was added.
(Sorry for inconvinience. [LIMITED MEMBER] is only available for limited members. Authorized by the JAXA satellite utilization center.) - 2010,Mar.10
- [EVENTS] [Report] Wideband InterNetworking engineering test and Demonstration Satellite "KIZUNA" (WINDS) International Symposium --Asia-Pacific Area Linked by KIZUNA -- was added.
- 2010,Feb.10
- [LIMITED MEMBERS] WINDS Experiment Instruction Revision A was updated.
[LIMITED MEMBERS] Trouble Shooting FAQ was added.
(Sorry for inconvinience. [LIMITED MEMBER] is only available for limited members. Authorized by the JAXA satellite utilization center.)