Outdoor fingerprint localization with BLE beacons

<strong>Introduction</strong> The data set contains received signal strength (RSS) measurements made with Bluetooth Low Energy (BLE) technology, which can be used for outdoor fingerprint-based localization applications, as presented in an article "LOG-a-TEC Testbed Outdoor Localization Usign BLE Beacons". <strong>Measurement setup</strong> The measurements were created with WL1837MOD radio connected to a in-house embedded device. The data set was collected with 40 nodes of the LOG-a-TEC testbed positioned at the campus of the Jožef Stefan Institute, Ljubljana. The experimentation area is composed of 5 x 26 positions separated by 1.2 m covering 150 square meters. On each position a mobile phone was broadcasting BLE advertising beacons with power of -2 dBm in interval of 100 ms. Surrounding testbed nodes were collecting the beacons for approximately a minute for each position. <strong>Data set</strong> Measurements are stored in JSON format where each object contains rss measurement (in dBm) with corresponding timestamp (in seconds). The folder contains two JSON files: spring_data.json - measurements made in May 2022, winter_data.json - smaller measurements made in December 2021. This data set contains only the measurements from the middle row of the campus park.