BLE RSSI vs distance

The data set has been used in SmartCPS experiment within Fed4Fire+ continuous call for studying RSSI (of BLE devices sending advertisements) depending on the distance to the scanning nodes. The data set contains location information transferred over Bluetooth Low Energy from a single BLE tag and registered by 5 nodes from CityLab testbed: Node 9, Node 33, Node 34, Node 35, Node 36 The data is stored in CSV format (with the following columns):<br> <strong>node</strong> - id of the CityLab testbed node<br> (<strong>node_lat</strong>, <strong>node_lon</strong>) - GPS coordinates of the node<br> (<strong>tag_lat</strong>, <strong>tag_lon</strong>) - GPS coordinates of the tag<br> <strong>ts</strong> - timestamp (milliseconds since the UNIX epoch: 1 January 1970)<br> <strong>rssi -</strong> received signal strength indication