Results 21 to 30 of about 88,870 (264)
Sensors, 2021 In this paper, we propose underwater acoustic (UWA) communications using a generalized sinusoidal frequency modulation (GSFM) waveform, which has a distinct ambiguity function (AF) and correlation function characteristic.
Jeongha An +3 more
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Space-variant ambiguity function processor [PDF]
Applied Optics, 1979 The ambiguity function that results from the space-variant optical processing of nonlinear coded waveforms is analyzed. The space-variant signal processor considered is realized by coordinate transformations. Specifically we consider x = lnt, which results in a Mellin transform-based Doppler-invariant signal processor.
D, Psaltis, D, Casasent
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ANALYSIS OF THE CHIRPLET TRANSFORM-BASED ALGORITHM FOR RADAR DETECTION OF ACCELERATED TARGETS
Radio Physics and Radio Astronomy, 2017 Purpose: Efficiency analysis of an optimal algorithm of chirp signal processing based on the chirplet transform as applied to detection of radar targets in uniformly accelerated motion.
V. G. Galushko, D. M. Vavriv
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Combined Radar and Communications With Phase-Modulated Frequency Permutations
IEEE Open Journal of the Communications Society, 2023 This paper focuses on the combined radar and communications problem and conducts a thorough analytical investigation on the effect of phase and frequency change on the communication and sensing functionality.
Tian Han +5 more
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Remote Sensing, 2022 In this paper, in order to reduce the probability of the radar waveform intercepted by the passive detection system, the time-bandwidth product of the radar waveform is increased, and the detection probability of the radar waveform to the target is ...
Yuxiao Song +5 more
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Engineering Reports, 2020 Time delay estimation (TDE) is an active research area due to its importance in a wide range of applications, such as target detection and transmitter identification.
Dillip Dash, Valarmathi Jayaraman
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Precise Method of Ambiguity Initialization for Short Baselines with L1-L5 or E5-E5a GPS/GALILEO Data
Sensors, 2020 This paper presents a precise and fast method of ambiguity resolution (PREFMAR) for frequencies L1/E1 and L5/E5a of GPS/GALILEO data. The developed method is designed for precise and fast determination of ambiguities in GNSS phase observations ...
Mieczysław Bakuła
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Remote Sensing, 2023 The extraction of the micro-Doppler (m-D) feature based on time-frequency distribution (TFD) is of great significance for target detection and identification.
Yang Yang +4 more
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Construction of Waveform Library in Cognitive Radar
Polish Maritime Research, 2017 Based on the thoughts of cognitive radar, Fractional Fourier Transform (FrFT) is used to generate a rotatable waveform libraries of Frank coded/Barker coded waveform in this paper.
Yongqiang Guo, Yumin Wu, Hui Liu
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Constrained Transmit Beampattern Design Using a Correlated LFM-PC Waveform Set in MIMO Radar
Sensors, 2020 This paper considers the design of a desired transmit beampattern under the good ambiguity function constraint using a correlated linear frequency modulation-phase coded (LFM-PC) waveform set in multiple-input-multiple-output (MIMO) radar. Different from
Sheng Hong +4 more
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