Improved synthetic aperture radar micro‐Doppler jamming method based on phase‐switched screen

Xu, Letao; Feng, Dejun; Wang, Xuesong

doi:10.1049/iet-rsn.2015.0266

Cited by 24 publications

(10 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to (13), under the uniform subsection situation, each sin c function in S (t) obtains the same main lobe width and amplitude coefficient, which means that S (t) obtains a fixed main lobe width and amplitude coefficient.…”

Section: A Subsection Situationmentioning

confidence: 99%

See 1 more Smart Citation

Optimization Method for Multiple Phases Sectionalized Modulation Jamming Against Linear Frequency Modulation Radar Based on a Genetic Algorithm

Jiang

Wang

Wu³

et al. 2020

IEEE Access

View full text Add to dashboard Cite

Multiple phases sectionalized modulation (MPSM) jamming is a kind of blanket jamming method against linear frequency modulation (LFM) radar, which can produce range-controllable noise-like jamming effect by dividing the signal into multiple subsections in the time domain and modulating different phases on each subsection. However, the partial relationship between the jamming effect and jamming parameters is complicated, which decrease the controllability of MPSM jamming effect. By transforming the problem of the controllability of MPSM jamming effect into the problem of the optimization of MPSM jamming effect, an optimization algorithm based on genetic algorithm (GA) is proposed to solve the problem in this paper. In the optimization based on GA, first, the objective function is constructed according to the jamming evaluation, the parameters are coded, the population is initialized, and the fitness value of the initial population is calculated. Then, the selection operation, crossover operation and mutation operation are performed, the next population is generated and its fitness value is calculated. Finally, judge if reach the termination, continue or output the optimization result and its corresponding parameters. The optimization method proposed in this paper can not only effectively increase the controllability of MPSM jamming effect, but also optimize the jamming effect. The simulation results show that the optimization method is feasible and has strong stability. INDEX TERMS Linear frequency modulation (LFM) radar, multiple phases sectionalized modulation (MPSM) jamming, range-controllable blanket jamming, genetic algorithm (GA), jamming effect optimization.

show abstract

Section: A Subsection Situationmentioning

confidence: 99%

“…There are many kinds of deception jamming, such as shift-frequency jamming [12], [13], intermittent sampling jamming [14]- [16], false moving target jamming [17], and convolution modulation jamming [18], [19]. Deception jamming can confuse the enemies and consume the radar resources.…”

Section: Introductionmentioning

confidence: 99%

Optimization Method for Multiple Phases Sectionalized Modulation Jamming Against Linear Frequency Modulation Radar Based on a Genetic Algorithm

Jiang

Wang

Wu³

et al. 2020

IEEE Access

View full text Add to dashboard Cite

show abstract

“…In [15] an improved micro-motion jamming method was proposed where theoretical analyses and simulation results verified the validity of the proposed method. In [16] the vibration signal modeling was deduced and the micro-motion signature of vibrating target was estimated, based on the short-term shift-orthogonal waveform in multiple-input-multiple-output (MIMO) SAR The results demonstrated the potential of MIMO-SAR for 3D micro-motion estimation. Once the micro-motion of ships was estimated, the research described also a single-stage LRSD algorithm implemented by convex programming (CP) [17] for the precise estimation of their inclination on the range-azimuth plane, respect to the azimuth direction.…”

Section: Introduction To Micro-motionmentioning

confidence: 99%

COSMO-SkyMed Staring Spotlight SAR Data for Micro-Motion and Inclination Angle Estimation of Ships by Pixel Tracking and Convex Optimization

Biondi

2019

Remote Sensing

View full text Add to dashboard Cite

In past research, the problem of maritime targets detection and motion parameter estimation has been tackled. This new research aims to contribute by estimating the micro-motion of ships while they are anchored in port or stationed at the roadstead for logistic operations. The problem of motion detection of targets is solved using along-track interferometry (ATI) which is observed using two radars spatially distanced by a baseline extended in the azimuth direction. In the case of spaceborne missions, the performing of ATI requests using at least two real-time SAR observations spatially distanced by an along-track baseline. For spotlight spaceborne SAR re-synthesizing two ATI observations from one raw data is a problem because the received electromagnetic bursts are not oversampled for onboard memory space saving and data appears like a white random process. This problem makes appearing interlaced Doppler bands completely disjointed. This phenomenon, after the range-Doppler focusing process, causes decorrelation when considering the ATI interferometric phase information retransmitted by distributed targets. Only small and very coherent targets located within the same radar resolution cell are considered. This paper is proposing a new approach where the micro-motion estimation of ships, occupying thousands of pixels, is measured processing the information given by sub-pixel tracking generated during the coregistration process of two re-synthesized time-domain and partially overlapped sub-apertures generated splitting the raw data observed by a single wide Doppler band staring spotlight (ST) SAR map. The inclination of ships is calculated by low-rank plus sparse decomposition and Radon transform of some region of interest. Experiments are performed processing one set of COSMO-SkyMed ST SAR data.

show abstract

“…Indeed, this concept is closely related to spreadspectrum communication [31], and its potential for stealth technology has been explored in the context of phase-switched screens [32][33][34][35][36][37][38]. The concept can be realized by modulating the reflection phase of a Salisbury screen between π and 0 to spread the power efficiently from the carrier frequency to the sidebands [32,35].…”

Section: Introductionmentioning

confidence: 99%

Time-varying Metasurfaces for Broadband Spectral Camouflage

Liu

Kozyrev²,

Shadrivov

2019

Phys. Rev. Applied

View full text Add to dashboard Cite

The possibility of making an object invisible for detectors has become a topic of considerable interest over the past decades. Most of the studies so far focused on reducing the visibility by reshaping the electromagnetic scattering in the spatial domain. In fact, by manipulating the electromagnetic scattering in the time domain, the visibility of an object can also be reduced. Importantly, unlike previous studies on phase-switched screens and time-varying metasurfaces, where the effect is narrow band due to the dispersive resonance, for microwave frequency range, we introduce a broadband switchable metasurface integrated with PIN diodes. The reflection phase of the metasurface can be changed by approximately π over a fractional bandwidth of 76%. By modulating the metasurface quasi-randomly in the time-domain, the incident narrow-band signal is spread into a white noise-like spectrum upon reflection, creating a spectral camouflage. The broadband feature of the proposed time-varying metasurface can provide practical insight for various applications including radar stealth and ultrawide-band wireless communication.

show abstract

Improved synthetic aperture radar micro‐Doppler jamming method based on phase‐switched screen

Cited by 24 publications

References 26 publications

Optimization Method for Multiple Phases Sectionalized Modulation Jamming Against Linear Frequency Modulation Radar Based on a Genetic Algorithm

Optimization Method for Multiple Phases Sectionalized Modulation Jamming Against Linear Frequency Modulation Radar Based on a Genetic Algorithm

COSMO-SkyMed Staring Spotlight SAR Data for Micro-Motion and Inclination Angle Estimation of Ships by Pixel Tracking and Convex Optimization

Time-varying Metasurfaces for Broadband Spectral Camouflage

Contact Info

Product

Resources

About