Kohei Fujimoto

Title: Innovations of Kohei Fujimoto

Introduction

Kohei Fujimoto is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of positioning technology, holding a total of nine patents. His work focuses on enhancing the accuracy and reliability of navigation systems.

Latest Patents

Fujimoto's latest patents include a locator, an accuracy evaluation system, and a positioning method. In his locator, a data synchronization unit calculates an interpolated value for autonomous sensor data that corresponds to the time of the latest GNSS data. A complex positioning unit then performs complex positioning using both the latest GNSS data and the interpolated value for the autonomous sensor data. Additionally, an autonomous navigation positioning unit conducts first and second autonomous navigation positioning using the interpolated value and the latest autonomous sensor data, respectively. A modified amount calculator determines a modified amount of autonomous navigation positioning based on the difference between the results of complex positioning and the first autonomous navigation positioning. Finally, an autonomous navigation positioning fix modification unit adjusts the result of the second autonomous navigation positioning using the modified amount to calculate the current position.

Another of his patents involves a positioning device and method. In this device, a dead reckoning part calculates the position of a subject vehicle through dead reckoning. A pseudorange smoothing part smooths the pseudorange between a GNSS satellite and the vehicle's position using the carrier wave phase of the GNSS satellite. A GNSS receiver positioning error evaluation part assesses the reliability of the vehicle's position calculated by the multi-GNSS receiver. The GNSS positioning part, utilizing the Kalman Filter method, calculates the vehicle's position from a smoothed value of the pseudorange, a positioning augmentation signal, and the orbit of the GNSS satellite. The complex positioning part also employs the Kalman Filter method to calculate and correct the error in the dead reckoning based on the position calculated by the GNSS positioning part.

Career Highlights

Fujimoto has worked with notable companies such as Mitsubishi Electric Corporation and Nippon Steel & Sumitomo Metal Corporation. His experience in these organizations has contributed to his expertise in the field of navigation and positioning technologies.

Collaborations

Some of his notable coworkers include Tadatomi Ishigami and Masatoshi Fujii. Their collaboration has likely played a role in advancing the innovations that Fujimoto has developed.

Conclusion

Kohei Fujimoto