Duong, H., Pham Thi Quynh, T., Hoang, M.K. and Trinh, A.V. 2022. An effectual direct position determination approach for enhancing the accuracy of the indoor positioning system. Journal of Military Science and Technology. 82 (Oct. 2022), 12–20. DOI:https://doi.org/10.54939/1859-1043.j.mst.82.2022.12-20.