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An Investigation of Rotary Drone HERM Line Spectrum under Manoeuvering Conditions
An Investigation of Rotary Drone HERM Line Spectrum under Manoeuvering Conditions
- Source :
- Sensors, Vol 20, Iss 5940, p 5940 (2020), Sensors, Volume 20, Issue 20, Sensors (Basel, Switzerland)
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- Detecting and identifying drones is of great interest due to the proliferation of highly manoeuverable drones with on-board sensors of increasing sensing capabilities. In this paper, we investigate the use of radars for tackling this problem. In particular, we focus on the problem of detecting rotary drones and distinguishing between single-propeller and multi-propeller drones using a micro-Doppler analysis. Two different radars were used, an ultra wideband (UWB) continuous wave (CW) C-band radar and an automotive frequency modulated continuous wave (FMCW) W-band radar, to collect micro-Doppler signatures of the drones. By taking a closer look at HElicopter Rotor Modulation (HERM) lines, the spool and chopping lines are identified for the first time in the context of drones to determine the number of propeller blades. Furthermore, a new multi-frequency analysis method using HERM lines is developed, which allows the detection of propeller rotation rates (spool and chopping frequencies) of single and multi-propeller drones. Therefore, the presented method is a promising technique to aid in the classification of drones.
- Subjects :
- Computer science
UAV
Acoustics
spool lines
0211 other engineering and technologies
log harmonic summation
Ultra-wideband
Context (language use)
02 engineering and technology
drone
lcsh:Chemical technology
Biochemistry
Article
Analytical Chemistry
law.invention
HERM lines
law
0202 electrical engineering, electronic engineering, information engineering
lcsh:TP1-1185
chopping lines
Electrical and Electronic Engineering
Radar
Instrumentation
021101 geological & geomatics engineering
micro-Doppler
multi-frequency analysis
Propeller
020206 networking & telecommunications
Atomic and Molecular Physics, and Optics
Drone
Modulation
Helicopter rotor
Focus (optics)
radar
Subjects
Details
- ISSN :
- 14248220
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- Sensors
- Accession number :
- edsair.doi.dedup.....77e883d77794bf5765ce63c48c3af10a
- Full Text :
- https://doi.org/10.3390/s20205940