TY - GEN
T1 - Analysis and Mitigation of Interference in a Multi-RADAR Environment
AU - Onyejegbu, Elochukwu
AU - Lee, Arman
AU - Ashimbayeva, Aigerim
AU - Nakarmi, Bikash
AU - Ukaegbu, Ikechi A.
N1 - Funding Information:
Next, the effect of RFHLFM on SNR and range resolution in RADAR systems is investigated. Using beat frequency and the cross-correlation function, this paper shows the ranging of three objects placed 2.5cm apart, with the first object 3.527m from the transmitter, in the presence of two non-coherent interference signals. In the first instance, the transmit signal is the conventional LFM signal. The same simulation is then rerun with RFHLFM as the transmit signal to show the effect of random frequency hopping on interference and noise, and to compare the range resolution in both cases. In Figure 3a (i), a ghost object is detected due to coherent interference. In Figures 3b and 3c (i), the interference signal is non-coherent and hence does not produce a peak high enough to lead to a false detection. However, the interference signals add to the noise floor. On the other hand, when the RFHLFM signal is used as transmit signal, the improved capacity for noise handling can be seen in Figures 3a-c (ii), with higher SNR. In terms of range resolution, RFHLFM RADAR shows a maximum range resolution error of 2mm while the conventional LFM RADAR has a maximum range resolution error of 3.5mm coupled with a false object detection and poor SNR, thus pointing to a better performance of RFHLFM RADAR over conventional LFM RADAR. Conclusion It has been shown that RFHLFM RADAR has a better noise handling capability, as well as a higher SNR and lower range resolution error when compared to the conventional LFM RADAR. The proposed RFHLFM RADAR demonstrates efficient spoofing and interference mitigation with improved range resolution. Future research plans in this regard will be focused on experimental verification of the simulation results obtained. Acknowledgements This work is funded by the Nazarbayev University Collaborative Research Grant (11022021CRP1507), and the Science & Technical Projects (AP14871109) funded by the Ministry of Education and Science of the Republic of Kazakhstan.
Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - This paper examines the disturbances (spoofing and interferences) in a multi-RADAR environment. Analysis of these disturbances in linear frequency modulated (LFM) and random frequency-hopped LFM (RFHLFM) RADAR shows that the RFHLFM RADAR has better output performance compared to conventional LFM RADAR in terms of accuracy, SNR and range resolution, in the presence of multiple interference signals. Both RADAR systems operate in the K-band (18 - 27GHz) frequency range.
AB - This paper examines the disturbances (spoofing and interferences) in a multi-RADAR environment. Analysis of these disturbances in linear frequency modulated (LFM) and random frequency-hopped LFM (RFHLFM) RADAR shows that the RFHLFM RADAR has better output performance compared to conventional LFM RADAR in terms of accuracy, SNR and range resolution, in the presence of multiple interference signals. Both RADAR systems operate in the K-band (18 - 27GHz) frequency range.
KW - beat frequency
KW - Interference mitigation
KW - linear frequency modulation
KW - RADAR
KW - random hopped LFM
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U2 - 10.1109/EDTM55494.2023.10102949
DO - 10.1109/EDTM55494.2023.10102949
M3 - Conference contribution
AN - SCOPUS:85158107171
T3 - 7th IEEE Electron Devices Technology and Manufacturing Conference: Strengthen the Global Semiconductor Research Collaboration After the Covid-19 Pandemic, EDTM 2023
BT - 7th IEEE Electron Devices Technology and Manufacturing Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2023
Y2 - 7 March 2023 through 10 March 2023
ER -