Mitsubishi Electric Starts Demonstration Experiment of Autonomous Driving Using CLAS Signal from Quasi-Zenith Satellite

Mitsubishi Electric Corporation announced on September 26 that it has started a demonstration experiment of autonomous driving using the centimeter-class positioning reinforcement service (CLAS) signal from the quasi-zenith satellite system on the highway from September 19.

CLAS is positioning reinforcement information for obtaining high-precision positioning values ​​that are distributed free of charge throughout Japan from the quasi-zenith satellite system maintained by the Cabinet Office. Is the period of test service.

Conventionally, satellite positioning used in daily life uses positioning signals from GNSS satellites such as GPS satellites in the United States, and includes the errors that satellites have (satellite orbit, satellite clock, satellite signal bias error). The positioning accuracy was about several meters because it includes errors depending on the positioning area (ionization layer / convection zone delay error), but CLAS has set up an electronic reference point by the National Land Research Institute to improve this positioning accuracy. It uses a network to generate positioning reinforcement information that corrects errors for each satellite or region, and distributes it to users via quasi-zenith satellites. As a result, users will be able to grasp their position in centimeters by using a high-precision positioning terminal (high-precision locator) that can receive CLAS signals.

Regarding this demonstration experiment, the company confirmed that infrastructure-type driving utilizing CLAS signals and high-precision 3D maps is practical by conducting experiments in an actual road environment, such as millimeter-wave radar and cameras. The company aims to put automatic driving into practical use along with autonomous driving that utilizes peripheral sensing technology.

Image of demonstration case of autonomous driving using CLAS signal

Mitsubishi Electric Corporation announced on September 26 that it has started a demonstration experiment of autonomous driving using the centimeter-class positioning reinforcement service (CLAS) signal from the quasi-zenith satellite system on the highway from September 19.

CLAS is positioning reinforcement information for obtaining high-precision positioning values ​​that are distributed free of charge throughout Japan from the quasi-zenith satellite system maintained by the Cabinet Office. Is the period of test service.

Conventionally, satellite positioning used in daily life uses positioning signals from GNSS satellites such as GPS satellites in the United States, and includes the errors that satellites have (satellite orbit, satellite clock, satellite signal bias error). The positioning accuracy was about several meters because it includes errors depending on the positioning area (ionization layer / convection zone delay error), but CLAS has set up an electronic reference point by the National Land Research Institute to improve this positioning accuracy. It uses a network to generate positioning reinforcement information that corrects errors for each satellite or region, and distributes it to users via quasi-zenith satellites. As a result, users will be able to grasp their position in centimeters by using a high-precision positioning terminal (high-precision locator) that can receive CLAS signals.

Regarding this demonstration experiment, the company confirmed that infrastructure-type driving utilizing CLAS signals and high-precision 3D maps is practical by conducting experiments in an actual road environment, such as millimeter-wave radar and cameras. The company aims to put automatic driving into practical use along with autonomous driving that utilizes peripheral sensing technology.

Image of demonstration case of autonomous driving using CLAS signal