TY  - JOUR
T1  - Improving Ranging Accuracy in Ultra-Wideband Time-of-Flight Systems by Enhanced Detection of the First Peak
AU  - Ham, Doyoung 
AU  - Kim, Seong-Choel 
JO  - The Journal of Korean Institute of Communications and Information Sciences
PY  - 2024
DA  - 2024/1/1
DO  - 10.7840/kics.2024.49.3.409
KW  - UWB
KW  - Ranging
KW  - Indoor positionin
AB  - This paper proposes an enhanced range estimation technique in ultra-wideband (UWB) communication systems. UWB, by utilizing the wide bandwidth, allows more accurate range estimation than other communication-based ranging systems. To measure and correct for the clock offset of the transmitter and receiver, three transmissions are used for each ranging session. By utilizing all three transmissions, a lower ranging error can be achieved. The improved range estimation was achieved by assuming that the earliest arriving case among the three estimated first peaks is the actual first peak. By correcting the range bias value that occurs when the first peak is missed, an improved median error of 0.48 m was achieved, compared to the 0.71 m error of the conventional technique (AltDS-TWR).