Takehiro Ohnishi

Title: Takehiro Ohnishi: Innovator in RTK Positioning Technology

Introduction

Takehiro Ohnishi is a notable inventor based in Hyogo, Japan. He has made significant contributions to the field of GNSS technology, particularly in the area of Real-Time Kinematic (RTK) positioning. His innovative work has led to the development of a unique system that enhances the accuracy of GNSS receivers.

Latest Patents

Ohnishi holds a patent for a "System and method for calibrating inter-frequency hardware bias in RTK positioning using error correction information." This patent describes a calibration memory that stores calibration information for combinations of GNSS receivers. The system retrieves calibration information for a selected combination of a first GNSS receiver for a base station and a second GNSS receiver for a rover. The calibration apparatus communicates with the rover and modifies the first correction signal to generate a modified correction signal calibrated for the second GNSS receiver. This innovation allows the rover to perform RTK positioning with respect to a known GNSS receiver of the base station, achieving automatic frequency-dependent hardware bias calibration.

Career Highlights

Ohnishi is currently employed at Magellan Systems Japan, Inc., where he continues to develop advanced GNSS technologies. His work has been instrumental in improving the reliability and accuracy of positioning systems used in various applications.

Collaborations

Ohnishi has collaborated with notable colleagues, including Nobuhiro Kishimoto and Toshinobu Nagamatsu. Their combined expertise has contributed to the advancement of GNSS technology and its applications.

Conclusion

Takehiro Ohnishi's innovative contributions to RTK positioning technology demonstrate his commitment to enhancing GNSS systems. His patent reflects a significant advancement in the field, showcasing the potential for improved accuracy in positioning applications.