Our Research
Precise RF TOF Measurement Based on Vernier Effect
In wireless sensor network system, the position of sensor nodes which are distributed to a measurement field, is one of the most fundamental pieces of information. For range-based localization, we research a precise RF TOF measurement system which using M-sequential code and new signal processing method based on Vernier effect with two heterogeneous clocks.
Sound Source Localization Based on TDOA between Distributed Microphones
A sound source localization system has been an active research topic because of its importance for surveillance of persons, animals, and machines. We research sound source localization and tracking of moving persons, using "footsteps" and "speech" signals, based on TDOA (Time Difference of Arrival) between distributed microphones.
Ultrasonic CT for Temperature and Wind Velocity Disribution Measurement
A Computed Tomography (CT) is a non-invasive measurement technique using the numerical processing for the visualization of the distribution which is difficult for direct measurement. We research ultrasonic CT system which can measure both cross-sectional temperature and wind velocity distribution.