Abstract: 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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Kim, J.; Lee, Y.; Cha, S.; Choi, C.; Lee, S. Development of a Network RTK Positioning and Gravity-Surveying Application with Gravity Correction Using a Smartphone. Sensors 2013, 13, 8879-8894.
Kim J, Lee Y, Cha S, Choi C, Lee S. Development of a Network RTK Positioning and Gravity-Surveying Application with Gravity Correction Using a Smartphone. Sensors. 2013; 13(7):8879-8894.
Kim, Jinsoo; Lee, Youngcheol; Cha, Sungyeoul; Choi, Chuluong; Lee, Seongkyu. 2013. "Development of a Network RTK Positioning and Gravity-Surveying Application with Gravity Correction Using a Smartphone." Sensors 13, no. 7: 8879-8894.