A Survey on Radio Frequency based Precise Localisation Technology for UAV in GPS-denied Environment

Owing to the specific characteristics of Unmanned Aerial Vehicles (UAVs), demands and applications increase dramatically for them being deployed in confined or closed space surveying, inspection detection substitute human. However, Global Positioning System (GPS) may lose effectiveness become unavailable due potential signal block interference that operational environment. Under such circumstances, an imperative requirement on new positioning technology UAV has emerged. With rapid development Radio Frequency (RF) based localisation technologies, leveraging small wireless sensor nodes low-cost, low latency, energy consumption accurate received significant attention. no up-to-date review been conducted this area so far. Therefore, paper aims give a comprehensive survey RF systems with different radio communication technologies mechanisms positioning. Toward end, exhaustive evaluation framework is first established evaluate performance each system from perspectives. Particularly, Ultra-wideband (UWB) time-based highlighted under consideration proposed framework. Finally, intensive analysis about current challenges research issues order identify promising directions future research.