Development of an RTK-GPS Positioning Application with an Improved Position Error Model for Smartphones

Hwang, Jin Soo; Yun, Hong Sik; Suh, Yongcheol; Cho, Jeongho; Lee, Dongha

doi:10.3390/s121012988

Cited by 24 publications

(17 citation statements)

References 14 publications

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“…Results of network RTK positioning from other research [23] has indicated a horizontal positioning accuracy of ±5 cm in Southern Germany. [6,12,24] demonstrated positioning errors of ±2.0 cm and ±5.0 cm for the horizontal and height coordinates, respectively, using network RTK. It follows that the NTRIP client in the app can carry out 3-D positioning using network RTK technology easily and in real-time using the GNSS receiver.…”

Section: Resultsmentioning

confidence: 99%

“…Reference [5] evaluated the possibility of adopting a smartphone-based monitoring system for coastal monitoring through prevision evaluation using smartphone-based technology. In [6] an app making it possible to position network RTK using a smartphone was implemented. Educational content has been produced and distributed for plastic surgery trainees and surgeons with smartphones [7–9].…”

Section: Introductionmentioning

confidence: 99%

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Development of a Network RTK Positioning and Gravity-Surveying Application with Gravity Correction Using a Smartphone

Lee

Sung-Yeoul

Choi

et al. 2013

Sensors

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This paper proposes a smartphone-based network real-time kinematic (RTK) positioning and gravity-surveying application (app) that allows semi-real-time measurements using the built-in Bluetooth features of the smartphone and a third-generation or long-term evolution wireless device. The app was implemented on a single smartphone by integrating a global navigation satellite system (GNSS) controller, a laptop, and a field-note writing tool. The observation devices (i.e., a GNSS receiver and relative gravimeter) functioned independently of this system. The app included a gravity module, which converted the measured relative gravity reading into an absolute gravity value according to tides; meter height; instrument drift correction; and network adjustments. The semi-real-time features of this app allowed data to be shared easily with other researchers. Moreover, the proposed smartphone-based gravity-survey app was easily adaptable to various locations and rough terrain due to its compact size.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of a Network RTK Positioning and Gravity-Surveying Application with Gravity Correction Using a Smartphone

Lee

Sung-Yeoul

Choi

et al. 2013

Sensors

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“…The idea is to provide the cyclist with some wearable gadgets embedded in his/her clothes (in the gloves or the helmet) that, thanks to a personal area network communication interface, can obtain information from the V-Alert application and alert the cyclist about closing vehicles via some LEDs, sounds, or vibration systems available to the rider depending on the smartphone. Also, the positioning error of the GPS (~5 m) must be fixed, so in future steps position accuracy must be improved by including a Differential GPS system or application [19]. Moreover, we are improving the mobile application algorithm in order to discard the information of those vehicles that will not intersect with the cyclist and are not a risk for him/her.…”

Section: Discussionmentioning

confidence: 99%

V-Alert: Description and Validation of a Vulnerable Road User Alert System in the Framework of a Smart City

Hernández-Jayo

Iglesia

Perez

2015

Sensors

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V-Alert is a cooperative application to be deployed in the frame of Smart Cities with the aim of reducing the probability of accidents involving Vulnerable Road Users (VRU) and vehicles. The architecture of V-Alert combines short- and long-range communication technologies in order to provide more time to the drivers and VRU to take the appropriate maneuver and avoid a possible collision. The information generated by mobile sensors (vehicles and cyclists) is sent over this heterogeneous communication architecture and processed in a central server, the Drivers Cloud, which is in charge of generating the messages that are shown on the drivers’ and cyclists’ Human Machine Interface (HMI). First of all, V-Alert has been tested in a simulated scenario to check the communications architecture in a complex scenario and, once it was validated, all the elements of V-Alert have been moved to a real scenario to check the application reliability. All the results are shown along the length of this paper.

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“…developed a Network RTK (NRTK) GPS smartphone application with less than 1 cm horizontal accuracy, less than 3 cm vertical accuracy and 0.71 sec latency times [79].…”

Section: Accuracy Of Smartphone Localizationmentioning

confidence: 99%

A Custom GPS Recording System for Improving Operational Performance of Aerially-Deployed Herbicide Ballistic Technology

Rodríguez¹

2014

2014 ASABE Annual International Meeting

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ACKNOWLEDGEMENTSI would like to express my sincere gratitude to those who helped me complete this thesis:To my advisor Dr. Daniel Jenkins for his support and guidance on my studies and research. I am grateful for his immense patience through my successes and failures.To Dr. James Leary for his advice and criticisms and providing me with a challenging and enjoyable research project.To Dr. Soojin Jun for his review and suggestions over the course of the project.To Dr. James Foster and the Pacific GPS Facility for providing resources and facilities for portions of this project.To Ryan Kurasaki for assistance and advice in the mechanical design and machining of early prototypes. In an effort to improve operations, GPS and other sensors were integrated directly into the electro-pneumatic device for instantaneously recording time, origin, and trajectory of each projectile discharged. These data are transmitted wirelessly to a custom android application that displays target information in real-time both textually and on a map. The application also records data into a comma delimited file so that it can easily be recalled for map display, or exported to other software such as for conducting additional GIS analysis. The logger makes data collection a seamless part of the operation, facilitates logistics of applying airborne HBT, and improves our interpretations of operational HBT performance with more statistically robust measures of herbicide use rate and time-on-target. This provides enhanced capabilities for building operational intelligence relevant to landscape scale invasive species management.

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Development of an RTK-GPS Positioning Application with an Improved Position Error Model for Smartphones

Cited by 24 publications

References 14 publications

Development of a Network RTK Positioning and Gravity-Surveying Application with Gravity Correction Using a Smartphone

Development of a Network RTK Positioning and Gravity-Surveying Application with Gravity Correction Using a Smartphone

V-Alert: Description and Validation of a Vulnerable Road User Alert System in the Framework of a Smart City

A Custom GPS Recording System for Improving Operational Performance of Aerially-Deployed Herbicide Ballistic Technology

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