Bistatic mmWave Mapping in Obstructed Environments Using Double-bounce Signals

Abstract

Integrated sensing and communication is envisioned to play a pivotal role in future 6G system, enabling various sensing tasks including positioning and mapping. In a bistatic scenario, sensing relies on non-line-of-sight signals that interact with objects in the surrounding environment. Prior works typically assume first-order interactions, meaning that the signal only interacts once with a single object in the environment. In this paper, we investigate the use of higher-order interactions for mapping the environment using mmWave signals. We devise and demonstrate a novel mapping method, based on the position and landmark estimates of an existing snapshot simultaneous localization and mapping algorithm, using double-bounce signals.