DocumentCode :
2078972
Title :
Retrodirective airborne radar for urban surveillance
Author :
Fertig, L.B.
Author_Institution :
Georgia Tech Res. Inst., Smyrna, GA
fYear :
2008
fDate :
26-29 Oct. 2008
Firstpage :
515
Lastpage :
517
Abstract :
Urban surveillance with airborne radar systems is very challenging due to blockage of line-of-sight caused by buildings. To overcome this limitation, it is very likely that the radar will be mounted on a small, inexpensive unmanned aerial vehicle (UAV) that can fly directly over an urban area of interest. Unfortunately, such systems provide very little power to their payloads, frequently less than 100 W. Despite recent advances in high-performance computing, it is extremely doubtful that such a limited power budget will be sufficient to both provide persistent illumination of the region of interest, and implement the very sophisticated radar processing that will be required for urban operation. In this paper, we propose a means of overcoming this power deficit by off loading nearly all of the required processing to a ground station. This is accomplished by a strategy we call ldquoretrodirective airborne radarrdquo. In essence, the waveform used for transmit at a particular pulse time corresponds to a coded version of the signal received during the previous receive interval. A ground station is used to demodulate the signals (originally received at the UAV) and process them.
Keywords :
airborne radar; radar signal processing; remotely operated vehicles; space vehicles; coded version; ground station; illumination; radar processing; region of interest; retrodirective airborne radar; unmanned aerial vehicle; urban surveillance; Airborne radar; Computer vision; Degradation; Lighting; Payloads; Satellite ground stations; Signal processing; Surveillance; Unmanned aerial vehicles; Urban areas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signals, Systems and Computers, 2008 42nd Asilomar Conference on
Conference_Location :
Pacific Grove, CA
ISSN :
1058-6393
Print_ISBN :
978-1-4244-2940-0
Electronic_ISBN :
1058-6393
Type :
conf
DOI :
10.1109/ACSSC.2008.5074458
Filename :
5074458
Link To Document :
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