Table of Contents
- Ultra-precision Location Information Service in a New Era
- cm-level Precision Positioning Possible Without Internet
- Expectations for Future Industry Utilization such as Drones and Autonomous Driving
- Plans for Verification and Expansion of Satellite Reference Points
- Differentiation from Existing Services
- Conclusion: Innovation in National Life and Industrial Fields
- Frequently Asked Questions (FAQ)
Ultra-precision Location Information Service in a New Era

The National Geographic Information Institute plans to launch the grid-based positioning correction information (G-VRS) pilot service starting from October 1.
The most prominent feature of this service is its ability to determine precise location in centimeters without an internet connection. This is based on a proprietary technology that utilizes satellite reference points and transmits correction information unidirectionally through UHD, DMB, and satellite broadcast signals.
This innovation is expected to positively affect mountainous areas, island regions, as well as the autonomous driving and drone industries in the future.
cm-level Precision Positioning Possible Without Internet

The existing location correction information service has been dependent on the internet, which limited its use in areas with unstable communication. Such limitations have posed difficulties in utilizing the service.

G-VRS provides correction information through broadcast signals. This enables uninterrupted precise positioning even without an internet receiving device.
Additionally, the signals are transmitted through multiple methods such as UHD, DMB, and satellite, which significantly enhances stability.
Expectations for Future Industry Utilization such as Drones and Autonomous Driving

The newly introduced G-VRS is a system that provides correction information by dividing the country into grid units of 20km × 20km. Through this system, users can automatically receive correction data from the nearest grid without separate location transmission and determine their accurate location.

This technology holds high potential for application in various fields, including drone delivery, agricultural drone pest control, and autonomous vehicles. In particular, by providing stable services even in areas with poor internet connectivity, it is expected to support the development of future industries based on location information.
Plans for Verification and Expansion of Satellite Reference Points

The National Geographic Information Institute has verified G-VRS’s accuracy in various real-world environments to ensure it is at a level similar to that of existing services. Testing has been conducted through static surveying, automobile driving, and drone flights, as well as field demonstrations and user tests with private sector consortiums.
In order to further enhance service quality, efforts are underway to expand satellite reference points in island areas. By the end of this year, four new satellite reference points will be added in Heuksando, Geomundo, Chujado, and Ulleungdo, with plans to operate a total of 103 locations.
Differentiation from Existing Services

The National Geographic Information Institute has provided various positioning correction information. The newly introduced G-VRS is a unidirectional service based on broadcasting, which will help to supplement the blind spots that can arise from existing internet-based methods.
This service provides horizontal accuracy of approximately 3cm and vertical accuracy of about 5cm, holding great potential for precision measurement and location-based services. This technological advancement is expected to enable more effective data utilization in related fields.

Conclusion: Innovation in National Life and Industrial Fields

The pilot service of G-VRS can be used by up to 300 people simultaneously, and participation can be requested on the official website of the National Geographic Information Institute (www.ngii.go.kr). The purpose of this pilot service is to provide accurate location information easily and safely in industries and daily life.
In the future, G-VRS is expected to be utilized in various areas including drones, autonomous vehicles, smart agriculture, and disaster safety. It is anticipated to enhance the convenience of citizens and contribute to the development of future industries.
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Frequently Asked Questions (FAQ)
Q. What are the main features of the G-VRS pilot service?
G-VRS is a unidirectional broadcast-based service that allows cm-level precision location determination without internet.
The G-VRS pilot service starting on October 1 by the National Geographic Information Institute provides accurate location correction information through UHD, DMB, and satellite broadcast signals without an internet connection. It utilizes a proprietary technology that employs multiple broadcasting signals, ensuring reliable location service even in difficult communication areas such as mountainous and island regions.
Q. How does G-VRS differ from existing location correction services?
G-VRS provides correction information using broadcast signals without internet, addressing communication blind spots.
Existing location correction services are limited in unstable communication areas due to their reliance on internet connections. However, G-VRS uses broadcasting signals to transmit correction information unidirectionally. This enables uninterrupted precise positioning even without an internet receiving device, improving reliability through various broadcasting methods such as UHD, DMB, and satellite.
Q. How does the G-VRS service deliver location correction information?
It divides the nation into 20km×20km grids and automatically receives correction data from nearby grids.
G-VRS divides the country into grid units of 20km × 20km, enabling users to receive correction information from the nearest grid without separate location transmission. This system utilizes unidirectional broadcast signals, providing fast and reliable location correction without needing an internet connection.
Q. What industries can utilize the G-VRS service?
It can be applied in various future industries including drone delivery, autonomous driving, smart agriculture, and disaster safety.
G-VRS can provide reliable precision location confirmations even in mountainous and island areas, making it highly applicable in developing future industries such as drone delivery, agricultural drone pest control, and autonomous vehicles. It is expected to support innovations in location-based advanced industries by maintaining high service quality even in challenging communication environments.
Q. How has the National Geographic Information Institute ensured the reliability of G-VRS?
Accuracy has been verified through tests, demonstrations, and the expansion of satellite reference points in various environments.
The National Geographic Information Institute has tested the accuracy of G-VRS in real-world environments through static surveying, automobile driving, and drone flights, along with demonstrations and user tests with private sector consortiums. Additionally, satellite reference points continue to be installed in Heuksando, Geomundo, Chujado, and Ulleungdo, increasing operational sites to a total of 103 and further enhancing service quality and reliability.
Q. How can one participate in the G-VRS pilot service and what is the user capacity?
Participation can be requested through the National Geographic Information Institute website and accommodates up to 300 users simultaneously.
The G-VRS pilot service can be used by a maximum of 300 users simultaneously, and those interested can apply through the official website of the National Geographic Information Institute (www.ngii.go.kr). The service aims to provide precise location information conveniently and safely in industrial and daily life.