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UAV-borne X-band radar for collision avoidance

Published online by Cambridge University Press:  19 July 2013

Allistair Moses
Department of Electrical and Computer Engineering, University of Denver, Denver, CO, USA
Matthew J. Rutherford*
Department of Computer Science, University of Denver, Denver, CO, USA
Michail Kontitsis
Department of Electrical and Computer Engineering, University of Denver, Denver, CO, USA
Kimon P. Valavanis
Department of Electrical and Computer Engineering, University of Denver, Denver, CO, USA
*Corresponding author. E-mail:


The increased use of unmanned aerial vehicles (UAVs) is coincidentally accompanied by a notable lack of sensors suitable for enabling further improvement in levels of autonomy and, consequently, integration into the National Airspace System (NAS). The majority of available sensors suitable for UAV integration into the NAS are based on infrared detectors, focal plane arrays, optical and ultrasonic rangefinders, etc. These sensors are generally not able to detect or identify other UAV-sized targets and, when detection is possible, considerable computational power is typically required for successful identification. Furthermore, the performance of visual-range optical sensor systems may suffer when operating under conditions that are typically encountered during search and rescue, surveillance, combat, and most other common UAV applications. However, the addition of a miniature RADAR sensor can, in consort with other sensors, provide comprehensive target detection and identification capabilities for UAVs. This trend is observed in manned aviation where RADAR sensors are the primary on-board detection and identification sensors. In this paper, a miniature, lightweight X-band RADAR sensor for use on a miniature (710-mm rotor diameter) rotorcraft is described. We present an analysis of the performance of the RADAR sensor in a realistic scenario with two UAVs. Additionally, an analysis of UAV navigation and collision avoidance behaviors is performed to determine the effect of integrating RADAR sensors into UAVs. Further study is also performed to demonstrate the scalability of the RADAR for use with larger UAV classes.

Copyright © Cambridge University Press 2013 

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1.Moses, A., Rutherford, M. J. and Valavanis, K. P., “Radar-Based Detection and Identification for Miniature Air Vehicles,” In: IEEE Conference on Control Applications, Denver, CO. (2011).Google Scholar
2.Moses, A., Rutherford, M. J., Kontitsis, M. and Valavanis, K. P., “UAV-borne X-band Radar for MAV Collision Avoidance,” In: Proc. SPIE 8045, Unmanned Systems Technology XIII, 80450U (May 23, 2011).CrossRefGoogle Scholar
3.Introduction to TCASII, Version 7, U.S. Department of Transportation, Federal Aviation Administration (Nov. 2000).Google Scholar
4.ICAO, ICAO Doc. 7030/4 (Region Supplementary Procedures), 5th ed. (International Civil Aviation Organization, 2008).Google Scholar
5.“TCAS/ACAS,” Forecast International, Technical Report (January 2007).Google Scholar
6.Systems, Z. F., “PCAS MRX product page,” Zaon Flight Systems, Technical Report.Google Scholar
7.“FLARM technical overview– how does it work ?”, Technical Report.Google Scholar
8.“FLARM faq,”, Technical Report.Google Scholar
9.Volakis, J., “Horn Antennas,” In: Antenna Engineering Handbook, 4th ed. (McGraw-Hill, New York, NY, 2007).Google Scholar
10.Technology, L., LTC1864/LTC1865, Linear Technology Corporation.Google Scholar
11.Tait, P., Introduction to RADAR Target Recognition (London, UK: Institute of Engineering and Technology, 2005).CrossRefGoogle Scholar
12.Bristeau, P.-J., Callou, F., Vissière, D. and Petit, N., The Navigation and Control Technology Inside the AR.Drone Micro UAV (IFAC World Congress, Milano Italy, 2011).Google Scholar
13.Duda, R. O., Hart, P. E. and Stork, D. G., Pattern Classification, 2nd ed. (Wiley, Hoboken, NJ, 2001).Google Scholar
14.Allan, J. R. and Orosz, A. P., “The Costs of Birdstrikes to Commercial Aviation.” 2001 Bird Strike Committee-USA/Canada (2001).Google Scholar
15.Lieven Dewitte, S. V., “M61 a1 vulcan: 20 mm gatling gun system,” Technical Report.Google Scholar
16.Flugzeugbau, D., “DG-808: The High-Performance Sailplane and Motor Glider,” DG Flugzeugbau, Germany.Google Scholar
17.Cessna Aircraft Company, “Skyhawk model 172r: Specification and description” (May 2010).Google Scholar
18.Bombardier Aerospace, Business Aircraft, “Learjet 40xr factsheet.”Google Scholar
19.Boeing Commercial Airplanes, “747-8 airplane characteristics for airport planning” (Sep. 2008).Google Scholar