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High-Performance Anti-Retransmission Deception Jamming Utilizing Range Direction Multiple Input and Multiple Output (MIMO) Synthetic Aperture Radar (SAR)
- Source :
- Sensors (Basel, Switzerland), Sensors; Volume 17; Issue 1; Pages: 123, Sensors, Vol 17, Iss 1, p 123 (2017)
- Publication Year :
- 2017
- Publisher :
- MDPI, 2017.
-
Abstract
- Retransmission deception jamming seriously degrades the Synthetic Aperture Radar (SAR) detection efficiency and can mislead SAR image interpretation by forming false targets. In order to suppress retransmission deception jamming, this paper proposes a novel multiple input and multiple output (MIMO) SAR structure range direction MIMO SAR, whose multiple channel antennas are vertical to the azimuth. First, based on the multiple channels of range direction MIMO SAR, the orthogonal frequency division multiplexing (OFDM) linear frequency modulation (LFM) signal was adopted as the transmission signal of each channel, which is defined as a sub-band signal. This sub-band signal corresponds to the transmission channel. Then, all of the sub-band signals are modulated with random initial phases and concurrently transmitted. The signal form is more complex and difficult to intercept. Next, the echoes of the sub-band signal are utilized to synthesize a wide band signal after preprocessing. The proposed method will increase the signal to interference ratio and peak amplitude ratio of the signal to resist retransmission deception jamming. Finally, well-focused SAR imagery is obtained using a conventional imaging method where the retransmission deception jamming strength is degraded and defocused. Simulations demonstrated the effectiveness of the proposed method.
- Subjects :
- Synthetic aperture radar
Signal-to-interference ratio
Computer science
Orthogonal frequency-division multiplexing
Retransmission
MIMO
0211 other engineering and technologies
sub-band synthesize
Jamming
02 engineering and technology
lcsh:Chemical technology
Biochemistry
Signal
Article
range direction
Analytical Chemistry
SAR
jamming suppression
0202 electrical engineering, electronic engineering, information engineering
Electronic engineering
lcsh:TP1-1185
Electrical and Electronic Engineering
Instrumentation
021101 geological & geomatics engineering
Computer Science::Information Theory
fungi
020206 networking & telecommunications
Atomic and Molecular Physics, and Optics
Amplitude ratio
Transmission (telecommunications)
Radar jamming and deception
Frequency modulation
Communication channel
Subjects
Details
- Language :
- English
- ISSN :
- 14248220
- Volume :
- 17
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Sensors (Basel, Switzerland)
- Accession number :
- edsair.doi.dedup.....fa77cc657aa2b8423bfff8ef0b4e8c0a