Experimental studies of radar image construction algorithms for propellers and measurement method for repetition frequencies of the blades
Abstract
The radar image construction algorithms for propellers of aerial vehicles belonging to the classes «helicopter» and «propeller-driven aircraft» were proposed in [1]. The algorithms are designed to be implemented in a radar sensor with inverse synthesis of antenna aperture. The fundamental condition for the qualitative construction of radar images of the propellers is accurate measurement of their rotation frequency. The measurement method for the repetition frequency of the propeller blades on the base of the convolution of the spectrum of the «secondary» modulation of the signal reflected from propeller was proposed in [2]. This paper discusses the results of experimental studies of the measurement method for repetition frequency of the propeller blades and of the radar images construction algorithms of propellers of typical low-altitude aircraft (helicopters and propeller-driven aircrafts).
About the Authors
S. R. Heister
Research Institute of the Armed Forces of the Republic of Belarus
Belarus
D.Sci., professor, main researcher
Belarus
D.Sci., professor, main researcher
T. T. Nguyen
Belarusian state university of informatics and radioelectronics
Belarus
Belarus
PG student of information radiotechnologies department
References
1. Gejster S.R., Nguen T.T. Algoritmy postroenija radiolokacionnogo izobrazhenija vintov v gorizontal'noj I vertikal'noj ploskostjah letatel'nogo apparata v radiolokacionnom datchike s obrashhennym sintezom apertury antenny // Dokl. BGUIR. 2018. № 5 (115). S. 92–98. (in Russ.)
2. Gejster S.R., Nguen T.T. Sposob izmerenija chastot sledovanija lopastej vintov letatel'nogo apparata na osnove svertki spektra «vtorichnoj» moduljacii // Dokl. BGUIR. 2019. № 1 (119). S. 68–74. (in Russ.)
3. Microwave radar imaging of rotating blades / H.T. Tran [et al.] // IEEE International Radar Conference (Radar). 2013. P. 202–207.
4. Melino R., Kodituwakku S., Tran H.T. Orthogonal Matching Pursuit and Matched Filter Techniques for the Imaging of Rotating Blades // IEEE Radar Conference. 2015. P. 1–6.
5. Barry D. Bullard, Patrick C. Dowdy. Pulse Doppler signature of a rotary-wing aircraft // IEEE Aerospace and Electronic Systems Magazine. 1991. Vol. 6, iss. 5. P. 28–30.
6. Tikkinen J.M., Helander E.E., Visa A. Joint utilization of incoherently and coherently integrated radar signal in helicopter categorization // IEEE International Radar Conference. 2005. P. 540–545.
Review
For citations:
Heister S.R., Nguyen T.T. Experimental studies of radar image construction algorithms for propellers and measurement method for repetition frequencies of the blades. Doklady BGUIR. 2019;(4):72-78. (In Russ.)
Views: 496
Email this article 