Reduction of Doppler and Range Ambiguity Using AES-192 Encryption-Based Pulse Coding. [PDF]
Sensors (Basel), 2023 This research investigates the use of a Binary Phase Shift Key (BPSK) sequence derived from the 192-bit key Advanced Encryption Standard (AES-192) algorithm for radar signal modulation to mitigate Doppler and range ambiguities.
Kamrath L, Baginski M, Martin S.
europepmc +4 more sources
A Range Ambiguity Suppression Processing Method for Spaceborne SAR with Up and Down Chirp Modulation. [PDF]
Sensors (Basel), 2018 Range ambiguity is one of the factors which affect the SAR image quality. Alternately transmitting up and down chirp modulation pulses is one of the methods used to suppress the range ambiguity.
Wen X +5 more
europepmc +4 more sources
A range ambiguity classification algorithm for automotive LiDAR based on FPGA platform acceleration
Frontiers in Physics, 2023 In the past decade, the automotive light detection and ranging (LiDAR) has been experiencing a rapid expansion stage. Many researchers have been involved in the research of LiDARs and have installed it in vehicles as a means of enhancing autopilot ...
Haoyu Li
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PERFORMANCE & AMBIGUITY OF RANGE MEASUREMENT FOR COMS [PDF]
Journal of Astronomy and Space Sciences, 2007 The ambiguity and performance of range measurement for COMS using tone standard was analyzed with assuming that satellite is operating at transfer-station and on-station.
Sang-Il Ahn, Dong-Chul Park
exaly +2 more sources
Method of Range Ambiguity Suppression Combining Sparse Reconstruction and Matched Filter
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 Synthetic aperture radar (SAR) images are often affected by range ambiguity due to antenna sidelobe characteristics and pulse operating mechanism. The work of range ambiguity suppression focuses on both SAR system design and signal processing. On the one
Wang Xiaochen, Lijia Huang
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Azimuth Phase Coding by Up and Down Chirp Modulation for Range Ambiguity Suppression
IEEE Access, 2019 High range ambiguity level will impair the spaceborne SAR image quality and hamper following SAR image applications. The range ambiguity suppression effect of the up and down chirp modulation on spaceborne SAR images is analyzed in this paper.
Weixian Tan, Wei Xu, Pingping Huang
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Clutter and Range Ambiguity Suppression Using Diverse Pulse Train in Pulse Doppler System. [PDF]
Sensors (Basel), 2018 Pulse Doppler (PD) systems are widely used for moving target detection, especially in scenarios with clutter. Range ambiguity, which arises from fixed parameters in waveforms, is an inherent drawback in conventional systems.
Xu J, Ren L, Fan H, Mao E, Liu Q.
europepmc +2 more sources
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.
Guisheng Liao, Yifan Guo
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Echolocating Big Brown Bats, Eptesicus fuscus, Modulate Pulse Intervals to Overcome Range Ambiguity in Cluttered Surroundings. [PDF]
Front Behav Neurosci, 2016 Wheeler AR +5 more
europepmc +2 more sources
Atmosphere, 2022 In this paper, a dual-polarization weather radar echo signal simulation method is proposed for the evaluation of the performance enhancement of dual-polarization weather radar systems, the optimization of signal processing algorithms and the improvement ...
Shaojun Dai +6 more
doaj +1 more source