Results 21 to 30 of about 6,104,035 (281)
High-Resolution Wideband Waveform Design for Sonar Based on Multi-Parameter Modulation
Remote Sensing, 2023 The design of transmitting waveforms is an effective way to improve the detection performance of sonar systems. For the problem of high-range sidelobe when designing reverberation-resistant waveforms, this paper proposes a high-resolution wideband ...
Tong Duan +3 more
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Resolving depth measurement ambiguity with commercially available range imaging cameras [PDF]
, 2010 Time-of-flight range imaging is typically performed with the amplitude modulated continuous wave method. This involves illuminating a scene with amplitude modulated light.
McClure, Shane H. +3 more
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Integrating Agile Waveforms With DBF for HRWS SAR Imagery and Adaptive Jamming Suppression
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Range ambiguity resolving and deceptive jamming suppression are both challenges for high-resolution wide-swath SAR imagery. With the accommodation of the digital beamforming (DBF) techniques, agile waveforms are of potential to tackle the ambiguity ...
GanE Dai, Sha Huan, Lei Zhang
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Robust Range Ambiguous Deceptive Target Suppression Based on Covariance Matrix Reconstruction [PDF]
Remote Sensing, 2021 When the deceptive targets are in the ambiguious range bin but are received at the same range gate with the desired target by the array, the traditional multiple-input multiple-output (MIMO) radar is not able to discriminate between them. Based on the unique range-dependent beampattern of the frequency diverse array (FDA)-MIMO radar, we propose a novel
Zhuang Xie +4 more
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Ambiguity Suppression by Azimuth Phase Coding in Multichannel SAR Systems [PDF]
, 2011 The Azimuth Phase Coding (APC) technique, proposed to suppress range ambiguities in conventional SAR systems, stands out for its low implementation complexity and its effectiveness for point and distributed ambiguities.
Bordoni, Federica +5 more
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Mitigating Range Ambiguity Method Based on DDMA for SAR Systems
Remote Sensing, 2022 Range ambiguity can lead to deterioration of imagery quality for space-borne synthetic aperture radar (SAR). To solve this problem, we propose a mitigating range ambiguity method based on Doppler division multiple access (DDMA) in this paper.
Yifan Guo +3 more
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Slow-Time Ambiguity Function Shaping With Spectral Coexistence for Cognitive Radar
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 In the spectrum-congested environment, weak target obscuration can be addressed by simultaneously shaping the ambiguity function and waveform spectrum based on cognitive radar a priori information. In this article, we investigate joint waveform design to
Cui Zhang +6 more
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Leida xuebao, 2022 A Frequency Diverse Array (FDA), developed innovatively based on phased array radar, can obtain an angle-range-time-dependent multidimensional transmit beampattern by modulating frequencies across different transmit antenna elements, which considerably ...
Lan LAN +5 more
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SAR ambiguous range suppression. [PDF]
, 2006 Pulsed Radar systems suffer range ambiguities, that is, echoes from pulses transmitted at different times arrive at the receiver simultaneously. Conventional mitigation techniques are not always adequate. However, pulse modulation schemes exist that allow separation of ambiguous ranges in Doppler space, allowing easy filtering of problematic ambiguous ...
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Nonlinear suppression of range ambiguities in pulse-diverseradar
Electronics Letters, 2001 Coherent pulse train processing gives improved Doppler resolution, compared to single pulse processing, but introduces range and Doppler ambiguities. Diversely coded pulse trains produce a weighted composite ambiguity function at the origin and cross-ambiguity terms at multiples of the pulse repetition interval.
J.M. Anderson, M.A. Temple, M.E. Oxley
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