Research on PNT Data Integration for Signal Generation Payloads in Space Environment

Juman Park*, Seong-Bok Park, Jongwoo Seo, Seong-ho Joo, Young-jin Jeon, Ho-young Yoo

In order to provide precise Positioning, Navigation, Timing (PNT)services in SAT-NAV. It is imperative that safety and low-latency data transmission between data transmission between onboard components be ensured. The objective of this study was to investigate methods for processing and distributing PNT data to ensure the reliability of the On-Board Computer (OBC) and signal generation period interface in Sat- Nav. To establish a connection between PNT data, a thorough analysis of design elements was conducted. These elements pertain to the implementation of interface techniques that are commonly employed in existing aviation and low-speed remote sensing devices within the context of the space environment. Specifically, a design studied that incorporates hardware time-stamping based delay correction techniques, direct interface optimization with the signal generator and fault tolerance method for radiation and space environment.

Keywords: Sat-Nav, PNT