Comparison of ambiguity function of eigenwaveform to wideband and pulsed radar waveforms: a comprehensive tutorial

Nieh, Jo-Yen; Romero, Ric A.

doi:10.1049/joe.2017.0393

Cited by 11 publications

(5 citation statements)

References 18 publications

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“…An extreme value is obtained in relation of the dispersion to the pulse duration where the gain value by the distinction on the frequency and on the time axis are the same [8]. Deviation from this value in one direction leads to a sharp increase in the time-delay gain and in the other direction-in Doppler-shift as it is illustrated in Figure 5(а-c).…”

Section: Analysis Of Received Expression Of Ambiguity Functionsmentioning

confidence: 88%

Evaluation of phase-frequency instability when processing complex radar signals

Boiko

Karpova

Eromenko

et al. 2020

IJECE

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A new radar system for digital signal processing before detection is proposed. These are the guidelines for selecting an intermediate frequency for signal processing. The features of signal processing in the case of echo-signal selection by the features of the correlation properties of their complex bypass are described. This paper presents the study of ambiguity function (AF) when processing complex radar signals. In this work, the AF synthesis was performed considering non-determined components and the presence of phase-frequency instability. The received result enhances the potentials for distinguishing an incoherent radar signal. The numerical simulation results of received AF are presented. Considering fluctuation components in the complex AF, depending on the laws of the distribution of amplitude and frequency fluctuations and their parameters, allowed to get the gain in the width of the main lobe from the units to tens of times. Paper represents original analytical expressions for AF of radio-signals modulated by narrow band random processes with various distribution laws.

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Section: Analysis Of Received Expression Of Ambiguity Functionsmentioning

confidence: 88%

Evaluation of phase-frequency instability when processing complex radar signals

Boiko

Karpova

Eromenko

et al. 2020

IJECE

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“…Unlike previous works [29, 43] where we arbitrarily generated target responses with few resonant frequency bands, it will be shown in this work that RCS responses of ground vehicles are very wideband in nature. The wideband pulse waveform (WI) characterised by an evenly distributed energy across frequencies (a flat spectrum) performs very well in both detection and identification problems, making it an ideal benchmark against the transmit‐adaptive waveforms in this work.…”

Section: Waveform Design For Aspect Angle Uncertaintymentioning

confidence: 98%

Ground vehicle target signature identification with cognitive automotive radar using 24–25 and 76–77 GHz bands

Tan

Romero

2018

IET Radar, Sonar & Navigation

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“…Also, works in [9], [18], [29] considered arbitrarily generated targets which have very few frequency resonances and as such do not represent practical wideband targets. It is imperative that the next major advance in this new ''CRr meets EW'' topic to consider true-to-size targets whose physical extents are significant.…”

Section: As a Technologicalmentioning

confidence: 99%

Jammer-Nulling Transmit-Adaptive Radar Against Knowledge-Based Jammers in Electronic Warfare

Tan

Romero

2019

IEEE Access

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The authors present transmit-adaptive jammer nulling waveforms in cognitive radar (CRr) for aircraft response recognition as a form of electronic support in the electronic warfare domain. New forms of knowledge-based noise jammers that function as a form of electronic attack to matched illumination waveforms are also introduced. These knowledge-based noise jamming techniques capitalize on prior knowledge of the target's frequency response to obscure the true target response echo. The results from simulation show that real-time adaptive waveforms suppress the effects of electronic attack noise jammers and the newly introduced knowledge-based noise jammers. High bandwidth radar cross section (RCS) responses via electromagnetic (EM) simulations of true-to-physical-size aircraft are used for simulations to produce CRr classification performance against a comprehensive list of noise jammers.

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Comparison of ambiguity function of eigenwaveform to wideband and pulsed radar waveforms: a comprehensive tutorial

Cited by 11 publications

References 18 publications

Evaluation of phase-frequency instability when processing complex radar signals

Evaluation of phase-frequency instability when processing complex radar signals

Ground vehicle target signature identification with cognitive automotive radar using 24–25 and 76–77 GHz bands

Jammer-Nulling Transmit-Adaptive Radar Against Knowledge-Based Jammers in Electronic Warfare

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