Shipping to 
and 
List of RTK correction services and NTRIP Casters in Japan
If you’re in Japan and need centimeter-level position accuracy, you’ll need access to an RTK correction service or NTRIP Caster via the internet.
National RTK network in Japan
We are not aware of any National RTK Network in Japan. However, the Japanese government has established the QZSS satellite system, also known as Michibiki. This system offers two services through the L6 band (L-band): CLAS, which provides centimeter-level correction data, and MADOCA, which offers decimeter-level correction data across Japan, both available for free.
To access these services, we recommend using our Japan CLAS Corrections L6 Receiver NEO-D9C along with your receiver. This setup will enable you to start receiving correction data via L-band from CLAS, achieving centimeter-level accuracy.
Free international RTK correction services in Japan
If you only need pass-to-pass accuracy, and you don't need to compare your measurements with local maps done by other companies, social-based RTK networks are the cheapest way to go. There are also free global correction services with calibrated base stations which are available in Japan. You can use them to achieve centimeter-level accuracy if you are lucky to have a base station close to you (remember that RTK only works up to 35-50 km). Go to the links below and check the map to see if you have a base station nearby:
| RTK2GO | Free global community based correction network without quality of service. It is good enough for pass-to-pass centimeter accuracy, but not good for calibrated surveying applications. To view the coverage map, open this page and click "View all" on the top right. |
| IGS | Free global low density high quality correction service. View the coverage map and register for the service. |
| UNAVCO | Free global low density high quality correction service |
We have prepared a tutorial How to connect simpleRTK2B series receiver to a NTRIP correction service via PC.
Paid international correction services in Japan
If you could not find a base station in the free options or you need a supplier with quality of service, we prepared a list for you.
| Swift Navigation Skylark | 1 centimeter RTK starting from 69$/month and sub decimeter RTK-SSR from 29$/month for unlimited use. Contact us to try it for FREE. |
We have prepared easy-to-use ArduSimple Starter Kits for you with FREE trial period of one of augmentation services included.
Get your kit now and start enjoying centimeter-level accurate and reliable GNSS data in minutes!
Set up your own correction service
If you didn’t find anything nearby you or you simply would like to become independent from any service, check out our tutorial on How to set up your own base station.
