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Start of Trial Services

National Space Policy Secretariat, Cabinet Office 

Control of the first Quasi-Zenith Satellite (QZS1) was transferred from the Japan Aerospace Exploration Agency (JAXA) to the Cabinet Office on February 28, 2017.

After the transfer of control, authorization work has been made to confirm performance and compatibility with ground systems. The authorization work has been completed, and trial services started on March 28, 2017 for the following services.

  • Satellite Positioning, Navigation and Timing Service (PNT)
  • Sub-meter Level Augmentation Service (SLAS)
  • Centi-meter Level Augmentation Service (*)

The trial services will offer services with the same performance as the operation starting in FY2018 (*).The details are shown on this website’s User Interface Specifications page.

(*) Centi-meter Level Augmentation Service provides and broadcasts augmentation information that is available in whole coverage area of QZSS to the verification users. Function cooperating with domestic reference station network for the rapid acquisition of centi-meter level accuracy is still being adjusted sequentially. Centi-meter Level Augmentation information is planned to be broadcast as soon as the adjustment is completed. Notice will be posted on this website about the start date of trial service and other issues.

Information about provided services

Information about provided services is available on this website’s Operational status / NAQU information page.

NAQU information is provided via Twitter. To view this information, please follow @QZSS_Status on Twitter. (Twitter user top page:

Please be advised that centi-meter level augmentation service starting this time, is broadcasted with alert flag for the verification test users. Therefore, please take notice that NAQU information does not include the service information.

Borrowing receivers for application demonstration

While the trial services are available, application demonstrations can be conducted freely using QZS. Receivers for application demonstration can be borrowed at no charge. If you would like to borrow a receiver, please read the information on the Application Demonstration page and then apply.

Receivers cannot be directly loaned to people outside of Japan. However, a corporation in Japan may borrow a receiver and use it in other countries at its own cost and responsibility.