Frequency Invariant Beampatterns for Wideband Synthetic Aperture Channel Sounders

Vouras, Peter; Quimby, Jeanne; Jamroz, Benjamin F.; Weiss, Alec; Leonhardt, Rodney W.; Williams, Dylan F.; Remley, Kate A.

doi:10.1109/spawc48557.2020.9154324

Cited by 4 publications

(7 citation statements)

References 3 publications

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“…1) Detection Range: The Friis equation defined in [4] can be used to compute the maximum detection range possible given the transmit and receive antennas of a channel sounder. In a LoS geometry, the Friis equation for detection range is…”

Section: A Frequency Domain Sa Soundersmentioning

confidence: 99%

“…With a frequency domain channel sounder one can design an optimized beamformer for every beam-steering direction at each discrete measurement frequency as described in [4]. Fig.…”

Section: Frequency Invariant Array Responsementioning

confidence: 99%

“…Over the past several decades, an array of imaging sensors have been employed to create a single synthetic image by simulating a sensor with a much wider aperture and shallow depth-of-field. This synthetic aperture (SA) processing technique has led to a wide variety of cutting-edge applications in radar [1], sonar [2], radio telescopes [3], channel sounding [4], optics [5], radiometry [6], acoustics [7], quantum [8], microscopy [9] and biomedical applications, including ultrasound [10], magnetic resonance imaging (MRI) [11], magnetometry [12], and computed tomography (CT) [13]. The SAs offer savings in cost, hardware, and power while also providing a better view of occluded objects, improvement in signal-to-noise ratio (SNR), and enhanced resolution.…”

Section: Introductionmentioning

confidence: 99%

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An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures

Vouras¹,

Mishra²,

Artusio‐Glimpse³

et al. 2022

Preprint

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Rapid developments in synthetic aperture (SA) systems, which generate a larger aperture with greater angular resolution than is inherently possible from the physical dimensions of a single sensor alone, are leading to novel research avenues in several signal processing applications. The SAs may either use a mechanical positioner to move an antenna through space or deploy a distributed network of sensors. With the advent of new hardware technologies, the SAs tend to be denser nowadays. The recent opening of higher frequency bands has led to wide SA bandwidths. In general, new techniques and setups are required to harness the potential of wide SAs in space and bandwidth. Herein, we provide a brief overview of emerging signal processing trends in such spatially and spectrally wideband SA systems. This guide is intended to aid newcomers in navigating the most critical issues in SA analysis and further supports the development of new theories in the field. In particular, we cover the theoretical framework and practical underpinnings of wideband SA radar, channel sounding, sonar, radiometry, and optical applications. Apart from the classical SA applications, we also discuss the quantum electric-field-sensing probes in SAs that are currently undergoing active research but remain at nascent stages of development.

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Section: A Frequency Domain Sa Soundersmentioning

confidence: 99%

“…With a frequency domain channel sounder one can design an optimized beamformer for every beam-steering direction at each discrete measurement frequency as described in [4]. Fig.…”

Section: Frequency Invariant Array Responsementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures

Vouras¹,

Mishra²,

Artusio‐Glimpse³

et al. 2022

Preprint

Self Cite

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“…One major challenge is the presence of noise in the received signals, which can degrade the accuracy of waveform analysis and identification. Techniques to mitigate the impact of noise, such as denoising algorithms or windowing methods, need to be employed.Additionally, the classification and recognition of radar signal waveforms require robust and efficient algorithms [5]. Overall, the challenges associated with the generation and analysis of radar signal waveforms include waveform design complexity, noise interference, complex time-frequency characteristics, and the development of robust classification algorithms.…”

Section: Introductionmentioning

confidence: 99%

“…From the author of [5]ResXNet was proposed, with a novel multiscale lightweight attention model, the model has a larger receptive field and a novel grouped residual structure to improve the feature representation capacity of the model. In addition, the convolution block attention module (CBAM) is utilized to effectively aggregate channel and spatial information, enabling the convolutional neural network model to extract features more effectively.…”

Section: Introductionmentioning

confidence: 99%

Profiling radar signals based of pulse-to-pulse frequency agility

Ashraf A. Ahmad,

Mustapha M. Aji,

Yusuf Abdulmumin

et al. 2023

Global J. Eng. Technol. Adv.

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It is well known that the application of radar is becoming more and more popular with the development of signal technology progress. Therefore, this paper presents a first-stage process for radar signals analysis involving four different radar signals based on pulse-to-pulse frequency Agility. The radar signals include a normal radar signal (NRS), frequency hopping radar signal (FHRS), 2-frequency shift keying radar signal (2FSKRS), and a combination of frequency hopping radar signal (FHRS) and 2-frequency shift keying radar signal (2FSKRS). The process of modeling and generating the radar signals is presented and thereafter, results on the outcome of this process and their implications are discussed. It is observed from the obtained results of an accurate depiction of key parameters of pulse width (PW) of 1 µs and frequency of 10 MHz of the radar signals among others, that the developed models of the radar signals are feasible for further analysis using robust model signal processing tools such as time-frequency analysis can be used. Hence, these models can be used in practical radar signal analysis such as electronic intelligence (ELINT) and electronic warfare support (ES).

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An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures

Vouras

Mishra

Artusio‐Glimpse

et al. 2023

IEEE J. Sel. Top. Signal Process.

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Frequency Invariant Beampatterns for Wideband Synthetic Aperture Channel Sounders

Cited by 4 publications

References 3 publications

An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures

An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures

Profiling radar signals based of pulse-to-pulse frequency agility

An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures

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