超小型衛星 MicroOrbiter-1プロジェクト (CubeSat MicroOrbiter-1 Project)


CubeSat is a micro-satellite weighing about 1.1Kg. It has been developed mainly for educational and research purposes, but it is now expected that its use for commercial purposes will increase in the future.


CubeSatを使用するLoRa IoT 衛星通信 (LoRa IoT Satellite communication using CubeSat)

低消費電力、長距離通信、広域カバーを特徴とするLPWA(Low Power Wide Area)IoT通信技術を利用し、地球上の任意の場所に設置されたセンサーからの微弱データを拾えるLoRa IoT衛星通信システムを実現させる為に、LPWAの一つの有力な方式であるLoRa方式の低コスト超小型衛星の共同開発を国立大学法人 九州工業大学と進めています。

In order to realize LoRa IoT satellite communication system that uses LPWA IoT communication technology featuring low power consumption, long distance communication, and wide-area coverage, and picks up the weak data from sensor terminals installed anywhere on earth, we are jointly developing a low-cost LoRa IoT micro satellite with Kyushu Institute of Technology.


LoRa無線通信方式の特徴と利用分野 (Features and application fields of LoRa IoT communication system)


Long-distance communication, low cost, low power consumption, specified low-power radio station that does not require a radio license.


Location information data collection, gas/electricity meter reading information collection, temperature/humidity/barometric pressure information collection

LoRa変調方式によるIoT衛星通信システムのイラスト (Illustration of IoT satellite communication system using LoRa modulation)

● エンジニアリングモデルの開発状況 (Engineering model development status)

2022年3月31日Critical Design Reviewが終了し、Engineering Model (EM)が姿を現しました。振動試験、真空熱試験、電波暗室での各種電波試験が成功裏に完了しました。 On March 31, 2022, Critical Design Review was completed, and the Engineering Model (EM) has appeared. Vibration test, vacuum heat test, and radio wave test have been successfully completed.

写真は組み立てた状態のEngineering Modelです。EM内部のボードにはEMの設計、検査、組み立てに協力したフィリピン、エルサルバドル、イギリス、ブータン、ネパール、イタリア、パラグアイ、ブラジル、トルコ、ジンバブエ、モロッコ、スーダン、スリランカ及び日本の研究者や留学生の名前が刻まれています。Photo shows the assembled Engineering Model. On the board inside the EM are engraved the names of researchers and international students from Philippine, El Salvador, UK, Buhtan, Nepal, Italy, Paraguay, Brazil, Turkey, Zimbabwe, Morocco, Sudan, Sri Lanka and Japan who were involved in the design, inspection, and assembly of the EM.

真空熱試験を実施する前のチャンバー内に設置され、衛星の内部機器に計測用ケーブルが取り付けられた状態の衛星の写真です。試験は真空状態で-20℃から+65℃の範囲で24時間連続行われる。These are pictures of the satellite before conducting vacuum thermal test with measuing cables attached to the satellite’s internal boards. Test is performed continuously for 24 hours in the range of -20°C to +65°C under vacuum.

振動試験台にエンジニアリングモデルが設置された写真(左)、超小型衛星との通信を行うための地上無線設備の写真(中)、衛星の各種電波実験の為の電波暗室(Anechoic Chamber)の写真(右)。

A photo of an Engineering Model installed on a vibration test bench (left), a photo of terrestrial radio equipment for communicating with satellite (middle), a photo of an anechoic chamber for satellite radio experiment (right)

当社超小型衛星の姿勢制御は地磁気を利用したPassive Magnetic Attitude Control System(沿磁力線姿勢制御方式)です。この方式で衛星の回転の安定化の為にヒステリシスダンパーを使用しますがそのダンパー特性を評価する為の実験装置がありその写真を掲載します。(2022年7月)

Attitude control of our micro satellite is based on the Passive Magnetic Attitude Control System (attitude control system along magnetic lines of force) that uses geomagnetism. In this method, a hysteresis damper is used to stabilize the rotation of the satellite, and there is an experimental device for evaluating the damper characteristics, photo of which is showm here. (2022-July)

● フライトモデルの開発状況 (Flight model development status)

衛星のFlight Modelをクリーンルームで組み立てるための準備が進んでいます。(2022年7月)

Preparations are underway to assemble the satellite Flight Model in a clean room. (2022-July)


We received the radio station preliminary license notification for the satellite body and ground communication equipment. After that, the inspection of the satellite was carried out by inspectors from the Kyushu Bureau of Telecommunications in the clean room of the Kyushu Institute of Technology. Various parameters of the application form were verified on-site, and it was confirmed that there were no problems, and the inspection successfully passed. (2022-Sept)


Our satellite will be launched by US rocket and transported to the ISS (International Space Station), and released into space from the ISS. Fit-check was conducted by using POD from JAXA to check if our satellite can smoothly enter into POD and be deployed from POD to the space. (2022-Nov)

フィットチェック完了後、衛星の最終組み立てが行われ、ようやく打ち上げに使用できるフライトモデル(FM)が完成しました。衛星のトップの部分(+Z面)には平面パッチアンテナを配置していますがそのパッチアンテナ面に完成記念として当社の3名の名前と出身国国旗を印刷しています。CTO(Chief Technical Officer)のFahd Moumniはモロッコ出身、CTD(Chief Development Officer)のYasir Abbasはスーダン出身です。(2022年11月)

After the fit check was completed, the final assembly of the satellite was completed as a Flight Model (FM), which can be used for rocket launch. A flat patch antenna is placed on the top of the satellite (+Z plane), and the names of the three members of our company and the national flag of their home country are printed on the patch antenna side to commemorate the completion. CTO (Chief Technical Officer) Fahd Moumni is from Morocco and CTD (Chief Development Officer) Yasir Abbas is from Sudan. (2022-Nov)


As a result of fixing the completed flight model on the vibration test stand and conducting vibration analysis, there was no change exceeding the allowable level in the response at each measurement point, and the frequency change of the lowest natural frequency was also observed before and after the random vibration test. The vibration test passed, confirming that there was no looseness or breakage in the satellite structure under the required vibration environment. (2022-Nov)

● LoRa地上センサー端末の開発状況 (status of LoRa Ground Sensor Terminal development)

920MHz 固定型LoRa GST (Ground Sensor Terminal) 1号機が完成。太陽光パネルで電力供給。パッチアンテナを頭頂部に設置しMicroOrbiter-1 超小型衛星にセンサーデータを送信します。

Completed first unit of 920MHz fixed LoRa GST. Powered by solar panel. Patch antenna is installed on the top of the head to transmit sensor data to the MicroOrbiter-1 CubeSat.