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Article
Engineering, Electrical & Electronic
Yi Che et al.
Summary: We propose and demonstrate a cost-effective C-band 50-Gb/s downstream 4-ary pulse amplitude modulation passive optical network system. Waveform distortions induced by opto-electronic device band-limitation and fiber chromatic dispersion are compensated using electrical and optical pre-equalizers. The system parameters are determined experimentally to maximize the power budget of 29.2 dB.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2023)
Article
Geography, Physical
Yuxiao Zhang et al.
Summary: Automated Driving Systems (ADS) have opened up new possibilities for the automotive industry, but the perception and sensing challenges of autonomous driving under adverse weather conditions have hindered higher autonomy. This paper systematically assesses the influences of weather on ADS sensors and surveys the solutions for inclement weather conditions. It discusses state-of-the-art algorithms and deep learning methods for perception enhancement, sensor fusion solutions, available datasets, and potential research directions. Overall, this survey provides a comprehensive overview of the obstacles and directions in perception and sensing research in adverse weather conditions.
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
(2023)
Article
Chemistry, Analytical
Hyoduck Seo et al.
Summary: The emergence of autonomous vehicles represents a shift in transportation that goes beyond just being a means of getting from point A to point B. However, commercializing this technology has been difficult due to technological limitations. This paper proposes a method to improve the accuracy and stability of autonomous driving technology by building a precision map using multiple sensors.
Article
Engineering, Electrical & Electronic
Abhishek Sharma et al.
Summary: This paper discusses the importance of intelligent transportation in future smart cities and focuses on the application of photonic radar technology in the autonomous vehicle sector. The basic principle and detection schemes of frequency modulated continuous wave photonic radar are explained, and numerical simulations are conducted to understand their working. The results show that direct detection scheme has minimal complexity and sensitivity to received signal strength, while coherent detection offers higher target range estimation and velocity measurement at the expense of increased system complexity.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Optics
Anuranjana et al.
Summary: This work analyzes the performance of a terrestrial MDM-WDM FSO link at a data rate of 1000 Gbps using a dual polarization-quadrature phase shift keying (DP-QPSK) modulation scheme. The study investigates the link's performance considering linearly polarized (LP) 01 and 02 modes with a channel capacity and spacing of 10 x 100 Gbps and 10 GHz respectively. The evaluated parameters include received optical power and signal to noise ratio (SNR) under different weather conditions (clear, light fog, medium fog, and heavy fog) over a transmission range of 1.2 km to 20 km.
Article
Optics
Abhishek Sharma et al.
Summary: In this work, a coherent detection-based linear frequency modulated continuous wave (LFMCW) photonic radar is developed to detect multiple targets via polarization division multiplexing (PDM). The system is tested under zero visibility conditions and successfully detects targets under the impact of atmospheric turbulences. The system is also tested for moving traffic condition and demonstrates the ability to detect targets with different speeds. The range resolution of the proposed system is reported as well.
Article
Telecommunications
Abhishek Sharma et al.
Summary: In this work, a photonic radar system based on frequency modulation was developed to detect multiple stationary targets in adverse weather conditions. Experimental results showed successful detection of all targets with different bandwidths, and a high resolution at 150 meters was achieved.
JOURNAL OF SENSOR AND ACTUATOR NETWORKS
(2022)
Article
Telecommunications
Sushank Chaudhary et al.
Summary: The number of global road accidents has significantly increased in the last decade. To reduce these accidents, transportation systems need to become more intelligent. Photonic radar sensors show promise as a technology to detect multiple targets for autonomous vehicles. This study presents the design of a high-speed photonic radar using a cost-effective wavelength division multiplexing (WDM) scheme, and demonstrates its performance under various weather conditions.
JOURNAL OF SENSOR AND ACTUATOR NETWORKS
(2022)
Article
Computer Science, Information Systems
Abhishek Sharma et al.
Summary: A sensing system based on FMCW photonic radar is proposed to achieve more efficient sensing on multiple targets. The system utilizes WDM and PDM schemes for multiple target detection, and the impact of varying bandwidth on system performance is analyzed through numerical simulations.
Article
Telecommunications
Sushank Chaudhary et al.
Summary: This study mainly focuses on the potential of transmitting high-capacity data through FSO links by combining OCDMA and PDM, as well as the performance under different atmospheric fog conditions.
WIRELESS PERSONAL COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Kenneth E. Kolodziej et al.
Summary: This article discusses the development and design progression of the circular mode phasing technique applied to omnidirectional IBFD antenna arrays, presenting theoretical fundamentals, simulation results, and validation through prototype antennas. The technique provides up to 60 dB of isolation in the 2.4-2.5 GHz range, and its evolution for a collection of measured prototypes is summarized with a unique figure of merit to advance its application within future IBFD systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Physics, Multidisciplinary
Sushank Chaudhary et al.
Summary: High-speed data demand in sensitive locations has led to the development of new wireless technologies such as Ro-FSO. However, the performance of Ro-FSO systems is greatly influenced by adverse weather conditions, particularly haze and rainfall.
FRONTIERS IN PHYSICS
(2021)
Article
Physics, Multidisciplinary
Abhishek Sharma et al.
Summary: With the rapid growth of the autonomous vehicle industry in recent years, the challenge of designing highly efficient photonic radars has emerged. The existing radar technology is limited by bandwidth availability, and strong attenuation in diverse atmospheric conditions at higher frequencies also poses a challenge. Proposed photonic radar models utilizing frequency-modulated direct detection aim to address these issues and show improved range detection in adverse climatic situations.
FRONTIERS IN PHYSICS
(2021)
Article
Computer Science, Information Systems
Ekim Yurtsever et al.
Article
Optics
Dong-Nhat Nguyen et al.
Article
Engineering, Electrical & Electronic
Sushank Chaudhary et al.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2018)
Proceedings Paper
Computer Science, Theory & Methods
Sushank Chaudhary et al.
PROCEEDINGS OF THE 2018 2ND INTERNATIONAL CONFERENCE ON ALGORITHMS, COMPUTING AND SYSTEMS (ICACS 2018)
(2018)
Article
Engineering, Electrical & Electronic
Himali Sarangal et al.
OPTICAL AND QUANTUM ELECTRONICS
(2017)
Review
Optics
K. Anbarasi et al.
OPTICS AND LASER TECHNOLOGY
(2017)
Article
Optics
Florence Rashidi et al.
OPTICS COMMUNICATIONS
(2017)
Proceedings Paper
Optics
Ahmed H. Elghandour et al.
INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LASER SENSING AND IMAGING AND APPLICATIONS
(2013)
Article
Engineering, Electrical & Electronic
V Curri et al.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2004)
Article
Engineering, Electrical & Electronic
J Wang et al.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2004)
Article
Engineering, Electrical & Electronic
H Wu et al.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2003)
