Binary Stokes vector representation of aircraft in the low‐resolution radar context

Aldhubaib, Faisal

doi:10.1049/iet-rsn.2019.0066

Cited by 5 publications

(5 citation statements)

References 25 publications

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“…The wedged structures, i.e., wing, tail and stabilizer, have dimensions in the half-wavelength equivalent range of 7-24 MHz. Hence, the fundamental mode region extends from the high-frequency (HF) band to the very high frequency (VHF) band for the decade region [4]. The simulation adopts a plane wave excitation of continuous frequency between 0.1 and 50 MHz propagating in the incident directionβ inc with a linear polarization direction, η, towards the coordinate system origin.…”

Section: Simulation Configurations and Sem Modelmentioning

confidence: 99%

Enhancing the SEM Signature via the Optimum Onset With a Bistatic and Cross-Polarization Radar Configuration

Aldhubaib

2020

IEEE Access

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This paper assesses the feasibility of finding a time bin of optimum onset to improve the robustness of the resonance modes of a midsized aircraft target in the context of radar target identification subject to bistatic and polarization diversities. The approach utilizes the frequency data (noncoherent) to determine a reference onset and a reference resonant frequency set of interest and then employs the time data (coherent) to determine an optimum onset that leads to a minimum error between the reference and extractable mode frequencies. Both sets of data are subject to a qualitative assessment to investigate the impact of the bistatic and polarization radar configurations on the optimum onset to improve the mode extraction. The results show that an optimum onset, compared to the reference onset, is more immune to noise perturbation and has a better discriminative ability for same-class targets.INDEX TERMS Singularity expansion method, radar target identification, bistatic, polarization, feko.

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Section: Simulation Configurations and Sem Modelmentioning

confidence: 99%

Enhancing the SEM Signature via the Optimum Onset With a Bistatic and Cross-Polarization Radar Configuration

Aldhubaib

2020

IEEE Access

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“…The beforementioned factors will degrade the robustness of a resonance signature in a recognition operation using techniques like Extinction pulse, for example, [8,9], or feature sets like the characteristic polarisation state set and its shape derivatives, for example, [10][11][12][13][14][15]. Some techniques to negate the specular masking effect on the resonance set are choosing a late time onset that optimally separates the specular from the resonance content in the time domain or reducing the specular return by bistatic or polarisation diversities, for example, [16].…”

Section: Introductionmentioning

confidence: 99%

Waveform design for resonance signature of fighter‐class target

Alhajri,

Aldhubaib

2023

IET Radar Sonar & Navi

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The authors investigate the feasibility of forming a composite Gaussian waveform in the high‐frequency region for jetfighter class targets with a high potential to combat the noise effect and the late‐time signature onset ambiguity when estimating the target resonance signature. The excitation waveform comprises a composite of modulated carriers with fractional bandwidth and amplitude adapted to lower specular content while enhancing the radar target resonance content in the radar return, subsequently increasing the likelihood of extracting the resonance parameters more accurately. The validation of improvement in the resonance signature requires finding the error between the excitation frequencies and the extractable resonant frequencies in the return echo and, second, the similarity or resemblance between the original echo waveform and the reconstructed waveform by the estimated resonance set. The results presented the robustness rate in instantaneous, average, and overall fashion. In conclusion, a fractional bandwidth between 0.3 and 0.4 would significantly improve the signature overall robustness with a circular then slant scattering polarisation set outperforming the horizontal and vertical directions. Also, excluding the signal's high and low energy portions further enhance the accuracy of the estimated resonance mode set.

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“…A low-resolution radar system could utilize the radar target's complex natural resonance (CNR) signature in remote sensing, security, or air defense applications against buried targets, concealed weapons, long-range or even low observable radar targets, for example [1][2][3][4][5][6][7][8][9][10][11][12]. For example, in surveillance of a wide geographic area, such a proactive operation enables cueing and focusing other high-resolution radar systems on a smaller acquisition box where the potential target exists.…”

Section: Introductionmentioning

confidence: 99%

Composite Gaussian pulsed waveform for robust resonance radar signal

Aldhubaib

2022

The Journal of Engineering

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The paper assesses the feasibility of forming a composite excitation pulse with a high potential to combat the noise and onset ambiguity when estimating the target resonance behaviour in a radar target signal. The assessment investigates four composite pulse configurations of unified or adaptive setups for the fractional bandwidth and peak weight to find the best setup to enhance the resonance signature robustness. The assessment uses the method pencil function to extract the resonance parameters of the composite time data (coherent) and then to determine the degree of robustness over‐extraction onset and range of noise level. Determining the robustness rate requires finding the error between the original excitation frequencies and the extractable resonant frequencies and, second, the similarity between the original and reconstructed pulse waveforms. The qualitative assessments of the robustness merit concluded that the adaptive configuration of peak weight and small adaptive fractional bandwidth outperforms the other arrangements in enhancing the resonance return in radar signature.

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Binary Stokes vector representation of aircraft in the low‐resolution radar context

Cited by 5 publications

References 25 publications

Enhancing the SEM Signature via the Optimum Onset With a Bistatic and Cross-Polarization Radar Configuration

Enhancing the SEM Signature via the Optimum Onset With a Bistatic and Cross-Polarization Radar Configuration

Waveform design for resonance signature of fighter‐class target

Composite Gaussian pulsed waveform for robust resonance radar signal

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