Abstract:Facing the growing performance requirements of future mobile network application scenarios, Terahertz(THz) Integrated Sensing and Communication(ISAC) technology, with its advantages of high-speed communication and high-precision sensing, has become a current research hotspot.Existing research has largely focused on the performance analysis, waveform design, and system architecture of THz ISAC, with a lack of studies on the channel propagation characteristics of THz ISAC. To address this, a typical indoor laboratory scenario is selected, and a time-domain measurement system based on pseudo-random sequences is established to measure the indoor THz ISAC channel at 140 GHz band. Channel parameters such as path loss are analyzed based on the measurement data. The analysis results indicate that in the indoor scenario, the abundant scatterers are shared by both the communication and sensing channels. They not only appear in the results of sensing echoes but also contribute to the emergence of potential communication multipath components.