Abdalkarim HD, Maghdid HS. Hybrid Onboard Smartphone Sensors Measurements to Improve Heading Estimation for Indoors Positioning Solutions. KJAR [Internet]. 2019 Oct. 20 [cited 2025 Aug. 25];4(2):50-6. Available from: https://ns2.spu.edu.iq/index.php/kjar/article/view/354