A Nomadic Infrastructure with Hierarchical Block Tracking and Surveillance Resolution in Satellite Networks.

In this paper, we propose a multi-layered hierarchical block tracking (HBT) system for continuous real-time sensing and efficient network management of highly mobile nomadic infrastructure. In order to solve the limitations of the existing high-resolution satellite direct connection method in the fast tracking and management of mobile infrastructure due to the high processing delay and large data processing burden, we introduce event-based data abstraction and Infra Map management in a multi-layered network consisting of a Low Earth Orbit satellite (LEO), high-altitude platform (HAP), and low-altitude platform (LAP). Through this, unnecessary data transmission is minimized and processing speed and Surveillance Resolution (SR) are improved. Experimental results show that the HBT structure achieves the improved SR at low-speed conditions, maintaining high tracking stability even under dynamic movement scenarios, while reducing processing delay when compared to the existing LEO-ground direct communication. As a result, we verify that the HBT structure shows lower processing delay and high tracking stability when compared to the existing LEO-ground direct communication.