Instantaneous 3D velocity estimation using coordinated OFDM Radar nodes

Recently, Joint Communication and Sensing (JCAS) gained a lot of attention due to its relevance for the upcoming 6G standard. Sensing can supplement communication. For example, when the sensing module senses the presence of an obstacle and its motion direction, it then passes the sensing result to a network orchestrator module. In this way, the communication module can take reasonable measures to maintain communication quality. This paper describes 2D and 3D instantaneous velocity estimation methodologies for a target tracked using coordinated OFDM radar nodes. With our approach, the 2D and 3D velocities of objects can be found accurately. A precise estimation of the instantaneous velocity improves the prediction of the target's trajectory, which is crucial for many potential applications, such as automated guided vehicles and robotic arms in factories.