Lok Wai Jacky Tsay
Papers
6
Total Citations
46
H-Index
4
About
Lok Wai Jacky Tsay is a researcher specializing in acoustic positioning systems and indoor navigation technologies, with a particular focus on applications in agricultural robotics and GPS-denied environments. His work centers on the development of spread spectrum sound-based local positioning systems (SSSLPS), which offer compelling advantages for greenhouse operations, including centimeter-level accuracy, low cost, and broad spatial coverage. Tsay's most influential contribution, garnering 25 citations, introduced a sound-based positioning system with centimeter accuracy for mobile robots in greenhouses, incorporating frequency shift compensation to address real-world signal challenges. Complementing this, his research on temperature-compensated positioning and time-of-arrival (TOA) methods combined with inertial measurement units demonstrates a systematic approach to overcoming environmental and near-far signal interference problems inherent in indoor acoustic localization. His more recent work has expanded the application domain to dynamic unmanned aerial vehicles (UAVs), proposing Doppler shift compensation algorithms that achieved a 90.2% successful detection rate — a notable technical milestone. Through innovations in TDMA and FDMA multi-robot coordination and hybrid inertial-acoustic navigation, Tsay has meaningfully advanced precision indoor navigation for next-generation agricultural automation, establishing a coherent and impactful research portfolio in smart greenhouse technology.
Research Focus
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Top Papers
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