BlueTrk+ for Tracking Presence and Position

This article gives an overview of Bluetooth and Bluetooth Low Energy. It presents BlueTrk+. a lightweight application for tracking presence and position securely and flexibly for military-re-lated or disconnected, intermittent, and limited (DIL) environments. For tracking presence, four schemes with varying security levels are presented for broadcasting identities. For tracking position, a polar-coordinate-based approach is used. It involves using a radar-inspired method for estimating direction/angle and a machine learning method for estimating distance. Experimental results are presented to evaluate the positioning methods.