TY - JOUR
T1 - Analysis and experiment on the modulation sensitivity of doppler radar vibration measurement
AU - Gu, Changzhan
AU - Inoue, Takao
AU - Li, Changzhi
PY - 2013
Y1 - 2013
N2 - This letter analyzes the modulation sensitivity of Doppler radar vibration measurement using both 24 GHz and 2.4 GHz Doppler radars. A rigorous analysis is developed in terms of radar modulation sensitivity. In contrast to the common observation that the modulation sensitivity increases as the carrier frequency increases, it is shown that, for a given vibration motion, there exists a specific carrier frequency for optimal measurement. Experimental demonstration was carried out using both 24 GHz and 2.4 GHz radars to measure the same vibration, and the signal-to-noise ratio (SNR) at the receiver input was compared. It is shown that for cm scale movement, 2.4 GHz radar has a higher modulation sensitivity, while the 24 GHz radar has the optimal modulation sensitivity in the mm scale.
AB - This letter analyzes the modulation sensitivity of Doppler radar vibration measurement using both 24 GHz and 2.4 GHz Doppler radars. A rigorous analysis is developed in terms of radar modulation sensitivity. In contrast to the common observation that the modulation sensitivity increases as the carrier frequency increases, it is shown that, for a given vibration motion, there exists a specific carrier frequency for optimal measurement. Experimental demonstration was carried out using both 24 GHz and 2.4 GHz radars to measure the same vibration, and the signal-to-noise ratio (SNR) at the receiver input was compared. It is shown that for cm scale movement, 2.4 GHz radar has a higher modulation sensitivity, while the 24 GHz radar has the optimal modulation sensitivity in the mm scale.
KW - Radar
KW - SNR
KW - Sensitivity
KW - Vibration
UR - http://www.scopus.com/inward/record.url?scp=84885633245&partnerID=8YFLogxK
U2 - 10.1109/LMWC.2013.2250269
DO - 10.1109/LMWC.2013.2250269
M3 - Article
AN - SCOPUS:84885633245
SN - 1531-1309
VL - 23
SP - 566
EP - 568
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
IS - 10
M1 - 6480894
ER -