TY - GEN
T1 - The impact of Doppler Effect on the beat frequency signal of linear FM detector
AU - Xun, Yang
AU - Cui, Zhanzhong
AU - Hao, Xinhong
PY - 2011
Y1 - 2011
N2 - The traditional analysis of linear FM detector's beat frequency signal was based on that, the detection system and the target were stationary. As a result, it could not reflect the impact of the dynamic delay of the received signal caused by movement and the Doppler Effect. Beginning with the traditional research results, the beat frequency signal is analyzed in both time domain and frequency domain theoretically, with the help of derivation of the Doppler Effect. The result shows that, the beat frequency with the Doppler Effect is not a standard periodic signal, and the Doppler Effect not only causes the frequency spectrum shift of the beat frequency signal but also broadens the spectrum. And the broadening effect is affected by the frequency spectrum of the transmit signal mainly. Combing with the simulation results, the approximate expression of the beat frequency signal's frequency spectrum under the sports is given at last.
AB - The traditional analysis of linear FM detector's beat frequency signal was based on that, the detection system and the target were stationary. As a result, it could not reflect the impact of the dynamic delay of the received signal caused by movement and the Doppler Effect. Beginning with the traditional research results, the beat frequency signal is analyzed in both time domain and frequency domain theoretically, with the help of derivation of the Doppler Effect. The result shows that, the beat frequency with the Doppler Effect is not a standard periodic signal, and the Doppler Effect not only causes the frequency spectrum shift of the beat frequency signal but also broadens the spectrum. And the broadening effect is affected by the frequency spectrum of the transmit signal mainly. Combing with the simulation results, the approximate expression of the beat frequency signal's frequency spectrum under the sports is given at last.
KW - Beat frequency signal
KW - Detector
KW - Doppler Effect
KW - LFM
KW - Signal processing
UR - http://www.scopus.com/inward/record.url?scp=80053275615&partnerID=8YFLogxK
U2 - 10.1109/AIMSEC.2011.6009973
DO - 10.1109/AIMSEC.2011.6009973
M3 - Conference contribution
AN - SCOPUS:80053275615
SN - 9781457705366
T3 - 2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce, AIMSEC 2011 - Proceedings
SP - 4485
EP - 4489
BT - 2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce, AIMSEC 2011 - Proceedings
T2 - 2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce, AIMSEC 2011
Y2 - 8 August 2011 through 10 August 2011
ER -