Results 31 to 40 of about 146 (97)
An Indoor Ultrasonic Positioning System Based on TOA for Internet of Things
Mobile Information Systems, Volume 2016, Issue 1, 2016., 2016 With the development of Internet of Things, the position information of indoor objects becomes more important for most application scenarios. This paper presents an ultrasonic indoor positioning system, which can achieve centimeter‐level precise positioning of objects moving indoors. Transmitting nodes, receiving nodes, and display control terminal are
Jian Li +4 more
wiley +1 more source
Nominal Performance of Future Dual Frequency Dual Constellation GBAS
International Journal of Aerospace Engineering, Volume 2016, Issue 1, 2016., 2016 In this work an overview of numerous possible processing modes in future dual frequency, dual constellation GBAS is given and compared to the current GAST D standard. We discuss the individual error contributions to GBAS protection levels and give an overview of the general processing.
Daniel Gerbeth +4 more
wiley +1 more source
GPS vertical axis performance enhancement for helicopter precision landing approach
, 1986 Several areas were investigated for improving vertical accuracy for a rotorcraft using the differential Global Positioning System (GPS) during a landing approach.
Beser, Jacques, Denaro, Robert P.
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, 2004 Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2004.Includes bibliographical references (leaves 98-100).The FAA is developing the Local Area Augmentation System (LAAS) to replace ground-based navigation aids ...
Bednarz, Sean G. (Sean Garrett), 1980-
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, 2013 150-158Conventional Global Positioning System (GPS) receivers track GPS satellites above 5 degree horizon to avoid multipath effects. In order to improve vertical dilution of precision (VDOP), it is an attractive prospect to utilize GPS satellites ...
Pillai, C Radhakrishna +6 more
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Atomic Clock Augmentation For Receivers Using the Global Positioning System
, 1997 For receivers using the Global Positioning System (GPS), it is standard procedure to treat the receiver clock bias from GPS time as an unknown. This requires four range measurements to the satellites in order to solve for three dimensional position and ...
Kline, Paul A.
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, 2012 This dissertation focuses on a seamless positioning method for a mobile user in outdoor and indoor environments. The terrestrial digital multimedia broadcasting (T-DMB) signal is adopted as a solution for the mobile-user position to supplement faults of ...
문공보
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Site Configuration and Survey (NESP TWQ 2.1.4, CSIRO)
This dataset contains RTK GPS Data collected between April, 2017 and March, 2018 for 5 paired Control/Treatment gully sites being monitored as part of NESP Project 2.1.4 (Demonstration and evaluation of gully remediation on downstream water quality and ...
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Low-Cost GNSS and PPP-RTK: Investigating the Capabilities of the u-blox ZED-F9P Module. [PDF]
Sensors (Basel), 2023 Robustelli U, Cutugno M, Pugliano G.
europepmc +1 more source
Assessment of Number of Critical Satellites for Ground-Based Augmentation System Continuity Allocation to Support Category II/III Precision Approaches. [PDF]
Sensors (Basel), 2023 Song J, Milner C.
europepmc +1 more source