TY - GEN
T1 - Improving Angle of Arrival Estimation Accuracy for mm-Wave Radars
AU - Ataman, Ferhat Can
AU - Chethan, Chethan Kumar
AU - Rao, Sandeep
AU - Ozev, Sule
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Millimeter-wave radars are used to estimate the position of an object relative to the radar position in terms of the range, R, azimuth angle, θ, and elevation angle, φ. Typical radar operation includes transmitting a chirp signal, receiving the signal reflected by the objects in the environment, and mixing these signals at the receiver chain. For multiple antenna systems, the range can be calculated for each transmit and receive antenna, yielding multiple measurements. To increase the accuracy, these results are averaged. Angle estimation makes use of the phase differences between different antenna paths. Since there is only one calculation across all antenna elements, this calculation does not benefit from averaging. In addition to these random errors, systemic errors occur in the process of angle calculation. In this paper, we analyze the root cause of the systemic error and propose solutions to correct for this error to increase angle estimation accuracy.
AB - Millimeter-wave radars are used to estimate the position of an object relative to the radar position in terms of the range, R, azimuth angle, θ, and elevation angle, φ. Typical radar operation includes transmitting a chirp signal, receiving the signal reflected by the objects in the environment, and mixing these signals at the receiver chain. For multiple antenna systems, the range can be calculated for each transmit and receive antenna, yielding multiple measurements. To increase the accuracy, these results are averaged. Angle estimation makes use of the phase differences between different antenna paths. Since there is only one calculation across all antenna elements, this calculation does not benefit from averaging. In addition to these random errors, systemic errors occur in the process of angle calculation. In this paper, we analyze the root cause of the systemic error and propose solutions to correct for this error to increase angle estimation accuracy.
KW - Angle of Arrival estimation
KW - FMCW radars
KW - FMCW radars Systemic Error Characterization
KW - MIMO radars
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U2 - 10.1109/ITC51656.2023.00013
DO - 10.1109/ITC51656.2023.00013
M3 - Conference contribution
AN - SCOPUS:85182596100
T3 - Proceedings - International Test Conference
SP - 30
EP - 36
BT - Proceedings - 2023 IEEE International Test Conference, ITC 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE International Test Conference, ITC 2023
Y2 - 7 October 2023 through 15 October 2023
ER -