Results 11 to 20 of about 5,848,127 (241)
A Method for Reducing the Impact of Range Ambiguity
Leida xuebao, 2017 In this paper, we study the clutter suppression problem of an airborne bistatic radar with range ambiguity and propose a novel method to reduce the impact of range ambiguity using geometric configuration.
Wei Min, Li Xiaobo, Wang Li
doaj +2 more sources
A Novel Multi-Beam SAR Two-Dimensional Ambiguity Suppression Method Based on Azimuth Phase Coding
Remote SensingIn order to address the problems of range ambiguity and azimuth ambiguity in the wide-swath imaging of synthetic aperture radar (SAR), this paper proposes a multi-beam SAR two-dimensional ambiguity suppression method based on azimuth phase coding (APC ...
Yihao Xu +5 more
doaj +2 more sources
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
doaj +1 more source
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
doaj +1 more source
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
core +1 more source
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
core +1 more source
Azimuth Phase Coding for Range Ambiguity Suppression in SAR [PDF]
, 2004 A novel ambiguity suppression technique is proposed. Range ambiguities in synthetic aperture radar (SAR) images are eliminated with an azimuth filter after having applied an azimuth phase modulation to the transmitted pulses and a corresponding ...
Kusk, Anders, Dall, Jørgen
core +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source