D. H. Kim, B. R. Yun, S. H. Lee, W. J. Lee, Oct 2017, Improvement of Altitude Measurement Algorithm Based on Accelerometer for Holding Drone’s Altitude, KIPS Transactions on Software and Data Engineering, Vol. 6, No. 10, pp. 473-478

M. S. Han, 12 2017, Improvement of Filtering Method of Digital Pressure Sensor for Drone Altitude Measurement, The Journal of Korean Institute of Intelligent Systems, Vol. 27, No. 6, pp. 537-542

L. W. Kim, K. H. Choi, J. H. Lim, W. J. Yoo, H. K. Lee, Feb 2016, Improving GPS Vertical Error Using Barometric Altimeter, Journal of Advanced Navigation Technology, Vol. 20, No. 1, pp. 29-36

B Hofmann-Wellenhof, H Moritz, 2006, Physical Geodesy, 2nd, corrected Edition, New York: Springer

S. Kim H., H. Park C., 10 2020, A Study on Real-time Calculation of Geoid applicable to Embedded Systems, Journal of Advanced Navigation Technology, Vol. 24, No. 5, pp. 374-381

J. Kim E., K. Lee T., H. Kim K., 04 2021, A Study on Prediction of Wind Power Based on Deep-Learning Using Weather Data, The Transaction of the Korean Institute of Electrical Engineers, Vol. 70, No. 5, pp. 735-741

T. Lee K., S. Kim M., J. Kim H., H. Kim J., 9 2021, A Model to Predict Occupational Safety and Health Management Expenses in Construction Applying Multi-variate Regression Analysis and Deep Neural Network, Journal of the Architectural Institute of Korea, Vol. 37, No. 9, pp. 217-226

K. B. Kim, H. S. Yun, 10 2017, Accuracy Evaluation of Geoidal Height in Unified Control Points Using Earth’s Gravity Field Models, KSCE 2017 CONVENTION, pp. 738-739