Analysis of reflected signal of quad rotor UAV based on model fitting in mobile communication system

doi:10.23919/JSEE.2022.000011

Journal of Systems Engineering and Electronics ›› 2022, Vol. 33 ›› Issue (1): 97-104.doi: 10.23919/JSEE.2022.000011

• SYSTEMS ENGINEERING • Previous Articles Next Articles

Analysis of reflected signal of quad rotor UAV based on model fitting in mobile communication system

Xiaohui LI^1,^2,*(), Cong FANG¹(), Tao FAN¹()

¹ School of Telecommunication Engineering, Xidian University, Xi’an 710071, China
² Guangzhou Institute of Technology, Xidian University, Guangzhou 510555, China

Received:2020-12-02 Accepted:2021-12-09 Online:2022-01-18 Published:2022-02-22
Contact: Xiaohui LI E-mail:xhli@mail.xidian.edu.cn;xdufc@qq.com;601391627@qq.com
About author:|LI Xiaohui was born in 1972. She graduated from Xidian University with her B.S. degree in communication engineering in 1994. She received her M.S. degree in engineering from Xidian University in 2000. Since 2003, she has been engaged in research on MIMO OFDM wireless resource management technology. She received her Ph.D. degree in engineering in 2007 from Xidian University. She is a professor in Xidian University. Her research interests are broadband wireless communication and wireless resource management. E-mail: xhli@mail.xidian.edu.cn||FANG Cong was born in 1996. He received his B.S. degree in information engineering from Xidian University in 2018. He is now studying at the School of Communication Engineering, Xidian University, majoring in electronics and communication engineering. His main research interests are detection of low-speed small aircraft, communication and information systems, and signal processing. E-mail: xdufc@qq.com||FAN Tao was born in 1994. He received his B.S. degree from Xidian University in 2016. He is currently pursuing his Ph.D. degree with the State Key Laboratory on Integrated Services Network, Xidian University. His research interests include wireless communication, non-orthogonal multiple access, and millimeter wave channel estimation. E-mail: 601391627@qq.com
Supported by:
This work was supported by the State Major Research and Development Project (2018YFB1802004) and the State Key Laboratory of Air Traffic Management System and Technology (SKLATM201807)

Abstract

Abstract:

In view of the many scenes of unmanned aerial vehicle (UAV) detection, a third-party signal source is used to design a receiver to monitor the UAV. It is of great significance to understand the reflection of the signal illuminating the UAV. Taking the communication base station (BS) signal as the third-party signal source, and considering the complete transmission link, reflection changes and loss fading of the communication signal, this study conducts model fitting for irregular UAV targets, simplifying complex targets into a combination of simple targets. Furthermore, the influence of the dielectric constant of the target surface and the signal irradiation angle on the signal reflection is analyzed. The analysis shows that the simulation results of this model fitting method are consistent with the results of other literature, which provides theoretical support for the detection of low and slow small targets such as UAVs.

Key words: mobile communication signal, quad rotor unman-ned aerial vehicle (UAV), signal reflection, model fitting

Xiaohui LI, Cong FANG, Tao FAN. Analysis of reflected signal of quad rotor UAV based on model fitting in mobile communication system[J]. Journal of Systems Engineering and Electronics, 2022, 33(1): 97-104.

Figures/Tables 12

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References 33

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Parameter	Description
$A_r $	Scale factor
$L/{\rm{m}}$	Propeller blade length
$N$	Number of propeller blades
$R'/{\rm{m}}^2$	Range of propeller blades
$t/{\rm{s}}$	Time
$v/{{\rm{m}} \cdot {\rm{s} } ^{-1} }$	UAV speed
$\lambda/{\rm{m}}$	Transmitting signal wavelength
$\theta/{\rm{rad}}$	Angle between the plane of rotation and the line of sight from the transmitting BS to the centre of rotation
${\omega _c} /{{\rm{rad}} \cdot {\rm{s}}^{-1} }$	Angular frequency of transmitted signal
${\omega _r} /{{\rm{rad}} \cdot {\rm{s}}^{-1} }$	Rotating angle frequency of propeller blade

Parameter	Value
Frequency/GHz	3
Transmit antenna gain/dB	45
Receive antenna gain/dB	30
Bandwidth/MHz	20
System loss/dB	6

Analysis of reflected signal of quad rotor UAV based on model fitting in mobile communication system

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