Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Nak Yong Ko"'
Publikováno v:
Applied Sciences, Vol 14, Iss 12, p 5343 (2024)
This paper proposes a dead-reckoning (DR) method for vehicles using Lie theory. This approach treats the pose (position and attitude) and velocity of the vehicle as elements of the Lie group SE2(3) and follows the computations based on Lie theory. Pr
Externí odkaz:
https://doaj.org/article/ba31bb51698141fdbeac12a10a64fe72
Autor:
Da Bin Jeong, Nak Yong Ko
Publikováno v:
Sensors, Vol 24, Iss 5, p 1653 (2024)
This paper presents a sensor fusion method for navigation of unmanned underwater vehicles. The method combines Lie theory into Kalman filter to estimate and compensate for the misalignment between the sensors: inertial navigation system and Doppler V
Externí odkaz:
https://doaj.org/article/5e3fe67a4bd44b01ba7e68cbb70d0a1b
Publikováno v:
Sensors, Vol 24, Iss 4, p 1262 (2024)
An autonomous surface vehicle is indispensable for sensing of marine environments owing to its challenging and dynamic conditions. To accomplish this task, the vehicle has to navigate through a desired trajectory. However, due to the complexity and d
Externí odkaz:
https://doaj.org/article/917d54dbfd2b4a54908cfdf57bb25c94
Publikováno v:
IEEE Access, Vol 10, Pp 72717-72730 (2022)
In this study, the Lie group approach was used for state estimation of the dynamic-model-aided navigation (DMAN) of a small multirotor unmanned aerial vehicle. The unit quaternions constituting a Lie group called the three-sphere space ( $S^{3} $ ) w
Externí odkaz:
https://doaj.org/article/2e86abb34b1140ea8c920376b6ad739b
Publikováno v:
IEEE Access, Vol 7, Pp 31738-31750 (2019)
Nowadays, research and development of various indoor positioning systems (IPS) have been increasing owing to flourishing social and commercial interest in location-based services (LBSs). Among LBS technologies, we used the Bluetooth low energy beacon
Externí odkaz:
https://doaj.org/article/7a6ebbb558ab4f349836981a8ce58f88
Publikováno v:
IEEE Access, Vol 7, Pp 170715-170732 (2019)
This paper presents a dynamic-model-aided navigation (DMAN) method for a small multirotor unmanned aerial vehicle. The method can be used for temporary navigation in cases where location and velocity measurements from external sources, e.g., global n
Externí odkaz:
https://doaj.org/article/bcd059662a8b4406b74c6686b16875dc
Autor:
Nak Yong Ko, Tae-Yong Kuc
Publikováno v:
Sensors, Vol 15, Iss 5, Pp 11050-11075 (2015)
This paper proposes a method for mobile robot localization in a partially unknown indoor environment. The method fuses two types of range measurements: the range from the robot to the beacons measured by ultrasonic sensors and the range from the robo
Externí odkaz:
https://doaj.org/article/f80c19582b434d21aafe8a901403edea
Publikováno v:
Energies, Vol 12, Iss 9, p 1668 (2019)
The ever-growing mobile station (MS) localization technologies provide an increasingly important role in all aspects of the wireless cellular systems and Internet of Things (IoT). The accurate MS location information is the basis in connection of dif
Externí odkaz:
https://doaj.org/article/aa9e19d39bfc4aa08b1080db5897b301
Publikováno v:
Sensors, Vol 19, Iss 2, p 330 (2019)
This paper proposes a method of estimating the attitude of an underwater vehicle. The proposed method uses two field measurements, namely, a gravitational field and a magnetic field represented in terms of vectors in three-dimensional space. In many
Externí odkaz:
https://doaj.org/article/2eb6ebf26d504266966a0f4037d629a6
Publikováno v:
Sensors, Vol 18, Iss 9, p 2855 (2018)
This research used an invariant extended Kalman filter (IEKF) for the navigation of an unmanned aerial vehicle (UAV), and compared the properties and performance of this IEKF with those of an open-source navigation method based on an extended Kalman
Externí odkaz:
https://doaj.org/article/e940c601793c493498543cc0bee74fc8