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Clutter suppression for bistatic airborne radar with range ambiguity
Proceedings of 2011 IEEE CIE International Conference on Radar, 2011Bistatic pulse-Doppler airborne radar has desirable properties such as low probability of intercept relative to its monostatic counterpart, however the clutter characteristics of bistatic airborne radar are more complex than those of monostatic airborne radar, and the clutter spectra not only vary severely with range, but also vary with bistatic ...
null Wenchong Xie +3 more
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Optimal beamforming for range-doppler ambiguity suppression in squinted SAR systems
2011 4th IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), 2011This paper proposes a method to optimize the beamforming of a planar array in order to maximize the signal to ambiguity ratio, for a general squinted SAR observation geometry. The presence of the receiver thermal noise has been taken into account in the optimization procedure in order to maximize the signal to the overall disturbance ratio.
Paolo Di Lorenzo, BARBAROSSA, Sergio
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Suppressed ambiguity in range by phase-coded waveforms
IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217), 2002In Doppler radar for surveillance and remote sensing, the ambiguities in range/Doppler are usually solved by varying the pulse repetition frequency. In this paper, two alternative methods are discussed based on phase-coding and orthogonal waveforms. The first one distributes a phase code over a pulse sequence with only one phase step per pulse.
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Range ambiguity suppression for multi-channel SAR system near singular points
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016The technique of multiple apertures in azimuth enables a wide swath synthetic aperture radar (SAR) with high azimuth resolution. In a traditional multi-channel SAR system, a reconstruction algorithm is built to recover the ambiguous Doppler spectrum caused by non-uniform sampling.
Lei Guo, Xiaomin Tan, Hongxing Dang
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2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016
According to echo model and properties of azimuth multichannel ScanSAR with up and down chirp modulation, an effective imaging approach to handle the raw data of this mode is proposed. First, echoes corresponding up and down chirp modulation pulses are individually range compressed.
Hongbo Mo, Zhimin Zeng
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According to echo model and properties of azimuth multichannel ScanSAR with up and down chirp modulation, an effective imaging approach to handle the raw data of this mode is proposed. First, echoes corresponding up and down chirp modulation pulses are individually range compressed.
Hongbo Mo, Zhimin Zeng
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Range Ambiguity Suppression for Underwater Distributed Localization Based on Total Support Degree
2020 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC), 2020Underwater distributed synchronous positioning can be adopted to locate moving targets at a high speed. But the problem of range ambiguity always exists, as synchronous period of the system is short. A range ambiguity suppression method based on total support degree (TSD) is proposed for solving the range ambiguity problem with multipath interference ...
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Range ambiguity suppression by azimuth phase coding in multichannel SAR systems
IET International Radar Conference 2013, 2013Among the techniques for range ambiguity suppression, the azimuth phase coding (APC) stands out for its effectiveness for point and distributed targets with low implementation complexity. After modulation to the transmitted signal and the corresponding demodulation to the received signal, the residual modulation phase of the ambiguity signal shifts its
null Jun Yang +3 more
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Suppressing Range Ambiguity by Pattern Synthesis for SAR via Semidefinite Relaxation
IEEE Geoscience and Remote Sensing Letters, 2022Ce Yang 0001 +3 more
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Staggered SAR Range Ambiguity Suppression with Quasi-Orthogonal Signals
2023 IEEE 24th International Conference of Young Professionals in Electron Devices and Materials (EDM), 2023Sergey A. Kislyy +5 more
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Approach for Range-Ambiguous Clutter Suppression in an AEW Radar System
2021 7th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR), 2021Hao Yang +5 more
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