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Information about satellites being operated by ISSL is shown here. For more precise information, please refer to the website of each project.
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| [1] General Information | |
| Development started in 2000, and the flight model was completed in 2002. This XI-IV is the first handmade nano-satellite developed by ISSL. XI-IV is the world smallest satellite as of the launch date, which satisfies the CubeSat regulation of "10cm cube and 1kg". In addition, XI-IV is just 100th satellite put into orbit by Japan. | |
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| [2] Launch Information | |
| XI-IV was launched on June 30, 2003, from Plesetsk Cosmodrome, Russia. The launching vehicle is named "ROCKOT", converted from the ballistic missile. This time we made a contract directly with Eurockot, which is the joint venture of Germany and Russia. | |
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| [3] Communication System Information | |
| XI-IV is an amateur satellite using amateru band. The following information would be required to receive data from XI-IV. | |
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| Call Sign | JQ1YCW |
| Downlink (Telemetry) |
Frequency : 437.490MHz Last stage output power : 800mW Antenna : Half-wave dipole Modulation type : AFSK 1200bps Protocol : AX.25 |
| Downlink (Beacon) |
Frequency : 436.8475MHz Last stage output power : 80mW Antenna : Half-wave dipole Modulation type : CW Protocol : Morse code (Approximately 50WPM) |
| Attention! Telemetry downlink will be performed only when XI-IV is passing above Japan. We are sorry that any ham operators but those in East Asia cannot receive FM packet from XI-IV. | |
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| [4] Data Analysis Information | |
| Applications for analyzing data received from XI-IV are now available. When you heard XI-IV, please send a report to us. We offer you a verification card. | |
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| [5] Project Website | |
| http://www.space.t.u-tokyo.ac.jp/cubesat/ | |
| [1] General Information | |
| Originally XI-V is a backup model of XI-IV, and there has been no plan to launch it. However XI-IV was so successful, and a propose has come to verify the new type of solar cells with XI-V. Launch of XI-V was determined on very short notice. Receiving this chance, we improved the on-board software, and the images taken by XI-V will become more vivid and beautiful. Though XI-V is a kid brother of XI-IV, it can be said that he is a souped-up young. | |
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| [2] Launch Information | |
| XI-V was launched on October 27, 2005, from Plesetsk Cosmodrome, Russia. The launching vehicle was "KOSMOS" rocket. XI-V was released from ESA's educational satellite SSETI-Express. SSETI-Express itself is a piggy-back satellite, which means that XI-V is a grandchild satellite. | |
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| [3] Communication System Information | |
| The specification of XI-V communication system is almost the same as XI-IV. Note that the call sign and frequencies of XI-V are different. | |
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| Call Sign | JQ1YGW |
| Downlink (Telemetry) |
Frequency : 437.345MHz Last stage output power : 800mW Antenna : Half-wave dipole Modulation type : AFSK 1200bps Protocol : AX.25 |
| Downlink (Beacon) |
Frequency : 437.465MHz Last stage output power : 80mW Antenna : Half-wave dipole Modulation type : CW Protocol : Morse code (Approximately 50WPM) |
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| [4] Data Analysis Information | |
| Applications for analyzing data received from XI-V are now available. When you heard XI-V, please send a report to us. We offer you a verification card. | |
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| [5] Project Website | |
| http://www.space.t.u-tokyo.ac.jp/cubesat/ | |
| [1] General Information | |
| PRISM is a remote sensing satellite in which ISSL is engaged as the next-generation nano-satellite. We will install a full-fledged mission at the first time, and the bus functions are also upgraded. We try high level technology which no nano-satellites has never realized before. Active attitude control, on-orbit deployment mechanism, high resolution image acquisition are their examples. | |
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| [2] Launch Information | |
| PRISM will be launched from TNSC on 1/21/2009. | |
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| [3] Specification of downlink lines | |
| Call Sign | JQ1YZW |
| Downlink (AFSK1200bps) |
Frequency : 437.425MHz Last stage output power : 800mW Antenna : Half-wave dipole Modulation type : AFSK 1200bps Protocol : AX.25 |
| Downlink (GMSK1200bps) |
Frequency : 437.425MHz Last stage output power : 2W Antenna : Turnstyle Modulation type : GMSK 9600bps Protocol : AX.25 |
| Downlink (Beacon) |
Frequency : 437.250MHz Last stage output power : 80mW Antenna : Half-wave dipole Modulation type : CW Protocol : Morse code |
| [4] Data Analysis Information | |
| Some of applications for analyzing data received from PRISM are now available. When you heard PRISM, please send a report to GSN site or directly to ISSL operation team. | |
| [5] Project Website | |
| http://www.space.t.u-tokyo.ac.jp/prism/ | |
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© 2006 Intelligent Space Systems Laboratory, University of Tokyo. All rights reserved. |
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