Signal strength indoor localization using a single DASH7 message

In the Internet of Things, location information is crucial for many applications. We want to obtain location information from a device by using its existing communication modality. DASH7 is designed for low power sensor and actuator communication on a medium range, using the license exempt radio frequency channels below one gigahertz. In this paper, we present a method to localize a DASH7 mobile node based on a single message and a deterministic propagation model. The propagation model is used to indicate the distance between sender and receiver so that single measurement localization approach is possible without maintaining a fingerprint database. We obtain a median location error of 3.9 m, where we still see room for improvement.