The proposed research program is focused on enhancing the technologies utilized in UGS to improve the performance, endurance, covertness, maintainability and integration of these devices in the context of the overall SBInet security system. The objectives of the proposed research program include: (1) defining UGS technical requirements that are consistent with DHS SBInet needs; (2) conducting a detailed system engineering effort to enable the development of a fieldable SBIUGS prototype system and (3) developing a SBI-UGS prototype that demonstrates new advancements in sensing performance consistent with DHS border security requirements.