JAXA selects Spirent’s PNT simulation solution for lunar navigation program

The Japan Aerospace Exploration Agency (JAXA) has selected Spirent Communications to supply its lunar positioning, navigation and timing (PNT) simulation solution. The solution will support JAXA’s lunar exploration efforts and aid in developing essential navigation infrastructure for future moon missions.

Spirent’s PNT X solution allows JAXA to simulate lunar PNT services in a controlled laboratory setting before their deployment on the moon. This capability is critical for testing and validating navigation equipment for lunar missions in accordance with the emerging LunaNet specifications, which include adaptable S-band frequency solutions. The system also ensures scalability for future space exploration.

Using the PNT X system, JAXA can experiment with novel S-band signals and evaluate the performance of receivers that rely on standalone S-band Lunar PNT signals or a combination of Lunar PNT and Earth-based L-band GNSS infrastructure. The simulation of these signal combinations demands high levels of precision, which Spirent’s specialized architecture is designed to meet.

This collaboration builds on a longstanding relationship between Spirent and JAXA. In 2011, JAXA utilized Spirent’s simulation technology to verify the performance of early Quasi-Zenith Satellite System (QZSS) receivers. Since then, Spirent simulators have supported multiple advancements in QZSS.

Spirent’s lunar PNT simulation solution seeks to present new opportunities for space agencies developing lunar constellations, satellite and receiver developers and organizations planning lunar missions or seeking to establish additional PNT infrastructure on the moon.