BDS-3 Time Group Delay and Its Effect on Standard Point Positioning [PDF]
Remote Sensing, 2019 The development of the BeiDou navigation system (BDS) is divided into three phases: The demonstration system (BDS-1), the regional system (BDS-2) and the global BeiDou navigation system (BDS-3).
Peipei Dai +3 more
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The Study of Position Accuracy Using Precise Point Positioning (PPP) In Perspective of Indonesian National Standard of Horizontal Reference Network [PDF]
E3S Web of Conferences, 2019 Precise point positioning is a GNSS based positioning method that is known to regaining more precise information about major systematical errors in its functional model.
Azis Rasyad A. +2 more
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Remote SensingTo enhance the positioning accuracy of standalone GNSS receivers in environments unable to provide precise ephemeris and clock offset, such as undeveloped forest areas that lack network communication and power supply, this study employed the Time ...
Fangchao Li +7 more
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Performance of BDS B1 Frequency Standard Point Positioning during the Main Phase of Different Classified Geomagnetic Storms in China and the Surrounding Area [PDF]
Remote Sensing, 2022 Geomagnetic storms are one of the space weather events. The radio signals transmitted by modern navigation systems suffer from the effects of magnetic storms, which can degrade the performance of the whole system.
Junchen Xue +7 more
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A Novel Method for Fast Positioning of Non-Standardized Ground Control Points in Drone Images [PDF]
Remote Sensing, 2021 Positioning the pixels of ground control points (GCPs) in drone images is an issue of great concern in the field of drone photogrammetry. The current mainstream automatic approaches are based on standardized markers, such as circular coded targets and point coded targets. There is no denying that introducing standardized markers improves the efficiency
Zheng Zhu +3 more
openaire +2 more sources
Research on orchard navigation method based on fusion of 3D SLAM and point cloud positioning
Frontiers in Plant Science, 2023 Accurate navigation is crucial in the construction of intelligent orchards, and the need for vehicle navigation accuracy becomes even more important as production is refined.
Ye Xia +12 more
doaj +1 more source
Application of Multi-System Combination Precise Point Positioning in Landslide Monitoring
Applied Sciences, 2021 To verify the positioning performance and reliability of multi-system combination Precise Point Positioning in landslide monitoring, we carried out a multi-system combination Precise Point Positioning calculation experiment on the monitoring data of a ...
Chen Lin +9 more
doaj +1 more source
Frontiers in Plant Science, 2023 To address the current problems of large positioning error, low picking efficiency, and high cost of tea shoot picking, a continuous and precise harvesting scheme for tea shoots based on a two-dimensional (2D) perspective is designed in this study. A high-speed harvesting method for tea shoots in a standardized tea plantation assembly line type was ...
Kun Luo +10 more
openaire +3 more sources
Positioning Standardized Acupuncture Points on the Whole Body Based on X-Ray Computed Tomography Images [PDF]
Medical Acupuncture, 2014 Objective: The goal of this research was to position all the standardized 361 acupuncture points on the entire human body based on a 3-dimensional (3D) virtual body. Materials and Methods: Digital data from a healthy Korean male with a normal body shape were obtained in the form of cross-sectional images generated by X-ray computed tomography (CT), and
Jungdae, Kim, Dae-In, Kang
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Development of the Heterodyne Laser Encoder System for the X–Y Positioning Stage
Sensors, 2021 This investigation develops a laser encoder system based on a heterodyne laser interferometer. For eliminating geometric errors, the optical structure of the proposed encoder system was carried out with the internal zero-point method.
Chung-Ping Chang +4 more
doaj +1 more source