Results 11 to 20 of about 107,562 (201)
Remote SensingIn this article, we propose a joint waveform based on universal filtered multicarrier (UFMC) chirp for radar jamming and communication joint systems. Modulation of radar jamming chirp signals and communication signals on different subcarrier groups in ...
Gaogao Liu +4 more
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Orthogonal Chirp-Based Ultrasonic Positioning
Sensors, 2017 This paper presents a chirp based ultrasonic positioning system (UPS) using orthogonal chirp waveforms. In the proposed method, multiple transmitters can simultaneously transmit chirp signals, as a result, it can efficiently utilize the entire available ...
Mohammad Omar Khyam +3 more
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MIMO-OFDM Chirp Waveform Diversity Design and Implementation Based on Sparse Matrix and Correlation Optimization [PDF]
Leida xuebao, 2015 The waveforms used in Multiple-Input Multiple-Output (MIMO) Synthetic Aperture Radar (SAR) should have a large time-bandwidth product and good ambiguity function performance.
Wang Wen-qin +2 more
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Phase calibration for ideal wideband chirp in satellite-based synthetic aperture radar
ICT Express, 2022 With the development of launch vehicles, the number of satellite-based synthetic aperture radar (SAR) has been increasing. Satellite-based SAR can acquire high-resolution images at day and night regardless of the weather.
Kyeongrok Kim +2 more
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Wireless Power Transfer Using Chirp Waveforms
ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023 In this work, we investigate a superimposed chirp waveform for wireless power transfer (WPT) applications. By taking into account the properties of chirp signals, a transmission scheme is proposed that incorporates chirp superposition and subband selection to exploit both diode’s nonlinearity and frequency diversity.
Roy, Arijit +2 more
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Chirp Waveform Design for Wireless Communication, Radar, and Energy-harvesting Systems [PDF]
, 2022 Supervisors: Nemade, Harshal B and Bhattacharjee, RatnajitA chirp waveform is a frequency modulated signal in which the signal duration and bandwidth can be adjusted independently.
Roy, Arijit
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Photonic Generation of Wideband Chirped Microwave Waveforms [PDF]
IEEE Journal of Microwaves, 2021 A chirped microwave waveform with a large time-bandwidth product (TBWP) can find important applications in modern radar systems and microwave imaging systems. Microwave photonics, a field that studies the generation and processing of microwave signals in the optical domain to take advantage of the ultra-wide bandwidth offered by photonics, has been ...
Hao Chi, Chao Wang, Jianping Yao
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Remote Sensing, 2023 By means of alteration of the transmitted linear frequency modulation (LFM) signal waveform parameters, such as pulse width or chirp rate, initial phase, pulse repetition interval (PRI), and chirp rate polarity at every position of synthetic apertures ...
Zheng Ye +3 more
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LoCDM: A New Chirp Division Multiplexing Waveform Using LoRa-Based Chirp Bank
International audienceThe integration of Non-Terrestrial Networks (NTN), particularly Low Earth Orbit (LEO) satellites, is a defining feature of Beyond 5G and 6G systems.
Poulliat, Charly +2 more
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IEEE Photonics Journal, 2020 A photonics-assisted dual-chirp microwave signal generation scheme is proposed based on electro-optic modulation and heterodyne detection. The dual-chirp microwave signal is generated by heterodyne beating between a dual-chirp optical waveform and a ...
Lingjie Zhang +7 more
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