Chengxing Zhai

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About

Chengxing Zhai is a leading researcher in planetary defense and astronomical instrumentation, with a primary focus on detecting and characterizing near-Earth objects (NEOs). His most impactful work centers on the development of synthetic tracking (ST), a revolutionary technique that overcomes the traditional "trailing loss" problem—where fast-moving objects blur into streaks during long exposures. By computationally shifting and stacking short-exposure images, Zhai’s method enables small telescopes to achieve the sensitivity of much larger instruments, dramatically improving NEO detection rates and astrometric precision. His 2024 paper on synthetic tracking has already garnered 13 citations, reflecting its immediate influence on the field. Beyond NEOs, Zhai has contributed to space-based optical navigation and high-precision astrometry, advancing our ability to track both hazardous asteroids and spacecraft. His work is instrumental in supporting planetary defense initiatives, giving observatories worldwide a cost-effective tool to monitor potential impact threats. For students and researchers, Zhai exemplifies how clever algorithmic innovation can democratize access to cutting-edge astronomy, turning modest telescopes into powerful sentinels of the solar system.