Passive Radar Technology Overview and Applications in International Systems
Explore the emergence of passive radar technology through insights from Dr. Francois Maasdorp at the SATC 2019 event. Discover the background, benefits, applications, and international research trends of passive radar systems. Learn about the advancements in silent radar technologies and their potential impact on various sectors.
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Presentation Transcript
Contents Passive Radar: An Emerging Technology Presenter: Dr. Francois Maasdorp (CSIR) for SATC 2019, Pretoria, July 2019
Contents Background on Passive Radar Applications and Benefits International R&D and systems Past R&D in South Africa Present & Future R&D in South Africa (CSIR Perspective) Conclusion 2
Radar As we know it Transmit / Receive 3
Bistatic Radar Transmit Receive 4
Passive Radar / Passive Coherent Location Receive Use Broadcasting Tower as transmitter 5
Benefits and Applications Cost effective radar No transmission subsystem No RF spectrum license Low hardware cost Low life cycle/maintenance cost Non-cooperative platform detection technique similar to PSR Covert & Mobile (Receive only) Foreseen Applications Gap filling to radar networks (Civil Aviation & Defence) Incl. covering small airdromes Border safeguarding 6
Passive Radar Research International (1) Passive Radar Emerging Technology Significant research at Conferences/Journals since 2010 Lead: USA 41.8%, China 12.5% South Africa 0.6% Technology demonstrator developments Research Institutes Academia Industry Publications per year (Scopus) 180 160 [https://www.scopus.com/] 140 120 100 80 60 40 20 0 1960 1980 2000 2020 7
Passive Radar Research International (2) Passive Radar evaluated under SESAR (Single European Sky ATM Research) program Replace PSR with Passive Radar? Free spectrum for 5G Clearer view on Passive Radar by 2020 8
International Systems only few Silent Sentry Lockheed Martin (USA) FM Towers (100MHz) 220km detection @ 10m^2 Track 200+ targets TwInvis Hensholdt (Germany) Multiband FM/DAB/DVB-T 250km detection range Track 200 aircraft in 3D Other Aulos (Selex Italy) JY-50 (China) HA 100 (Thales - France) and more Aulos TwInvis JY-50 Silent Sentry 9
FM Radio Coverage Southern African Countries 80 km 80 km 150 km 150 km 10
Past CSIR Research Static Single Site Tracking Large Commercial Aircraft Small Commercial Aircraft Multi-static Target Tracking Large Commercial Aircraft Target Recognition Propeller driven aircraft Moving Receiver 11
Passive Radar R&D South Africa CSIR (Institute Role) University of Cape Town (Academic) University of Pretoria (Academic) Peralex Electronics (Industry) Lochtron (Industry) Armscor (Funding) 12
Present & Future R&D at the CSIR Passive Radar Long Term Test Passive Radar Emerging Technology Significant research at Conferences/Journals since 2010 Yet a lack of market acceptance of this technology to date Lack of long term qualification data CSIR in the process of Establishing the performance metrics of a Passive Radar using FM radio Sufficient FM radio infrastructure throughout Africa 13
Passive Radar - Test Bed Development 5 receiver nodes In Gauteng Region Dual baselines at some Rx 1 central node at CSIR Target tracking Database Truth data interface Web Display Connected with high bandwidth capacity links 1/10 Gbps South African Research Network (SANREN) 14
FM Band Passive Radar Performance Characterisation Gauteng Region 15
Passive Radar Nodes Various Sites/Nodes OR Tambo Antennas fixed to balconies NWU - Potchefstroom SANSA TUT - Emalahleni 16
Passive Radar Equipment at each receiver node Consist of Hardware 3/4 x FM radio band antennas GPS Antenna RF Cabling RF Receiver Processing PC with GPU Software Range, Doppler, Angle Processing Server, Client Software 17
Passive Radar Equipment at the central node Consist of Hardware 1 x Processing PC 1 x DB PC Software of Processing PC VPN software Node interface software Tracking Software Web Display Server Off line processing Statistics generation 18
Some Tracking Results Web Display (1) Approach to OR Tambo (8h15) 20
Some Tracking Results Web Display (2) Approach to OR Tambo (8h17) 21
Some Tracking Results Web Display (3) Manoeuvring aircraft C172 (Parys region) 22
Some Tracking Results Web Display (4) Small SLG4 aircraft (Vaal dam region) 23
Some Tracking Results Web Display (5) E135 & DH8D aircraft split (Heidelberg Region) 24
Some Tracking Results Web Display (7) Long Range A319 Track (close to Lesotho) 25
Some Tracking Results Web Display (8) Long Range A319 ID (close to Lesotho) 26
Probability of Detection: Prelim Results OR Tambo: Joint Detections: 27
Current CSIR Focus Passive Radar Long Term Test Gauteng 5 Node FM based Passive Radar Infrastructure Static Performance characterisation of POD, PFA, Accuracy Given Seasonal changes, Weather changes, Transmitter on-times etc. Digital TV (Digital Video Broadcasting) Higher frequency, smaller antennas Higher range resolution Drones Cars Area coverage yet to be done 28
Conclusion Passive Radar is an emerging technology Foreseen Applications for Passive Radar Gap filling to radar networks (Civil Aviation & Defence) Aircraft using FM radio Aircraft/Drones/Cars using DVB-T 29
Thank you Francois Maasdorp (fmaasdorp@csir.co.za)
