Study on detection techniques of distance and velocity by chirped LIDAR

Elghandour, Ahmed H.; Chen, Dianren

doi:10.1109/icoom.2012.6316290

Cited by 8 publications

(7 citation statements)

References 1 publication

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“…The baseband signal, derived from the filtered photocurrent signal, is defined as per the formulation in the equation below [49]:…”

Section: System Descriptionmentioning

confidence: 99%

Advancing Sustainable Marine Exploration: Highly Efficient Photonic Radar for Underwater Navigation Systems under the Impact of Different Salinity Levels

Aldawoodi,

Bilge

2024

Sustainability

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The exploration of underwater environments for applications like environmental monitoring, scientific research, and surveillance has propelled the significance of underwater wireless navigation. Light waves have emerged as a promising solution, offering the potential to achieve the required data rates and propagation speeds. However, underwater optical wireless navigation faces challenges, particularly limited range. This research investigates a novel FMCW (frequency-modulated continuous wave)-based photonic radar system’s efficacy in detecting underwater vehicles across diverse salinity levels and distances. Numerical simulation evaluations reveal distinct signal-to-noise ratios (SNR) and detected power peaks corresponding to varying salinity levels, demonstrating the system’s sensitivity. At 5 g/L salinity, the detected power peaked at −95 dBm, decreasing to −105 dBm at 15 g/L. SNR analysis indicates robust detection within a 4 m range, with challenges emerging at extended ranges and higher salinity. Despite these challenges, the system shows promise for near-range underwater navigation, contributing to sustainable marine exploration by enhancing the accuracy and efficiency of underwater monitoring systems. This advancement aligns with the goals of sustainable development by supporting the protection of marine ecosystems, promoting scientific understanding of underwater environments, and aiding in the sustainable management of marine resources.

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“…The baseband signal, derived from the filtered photocurrent signal, is defined as per the formulation in the equation below [49]:…”

Section: System Descriptionmentioning

confidence: 99%

Advancing Sustainable Marine Exploration: Highly Efficient Photonic Radar for Underwater Navigation Systems under the Impact of Different Salinity Levels

Aldawoodi,

Bilge

2024

Sustainability

View full text Add to dashboard Cite

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“…The detection of a target is based upon the frequency of received echoes, also known as range frequency, which is calculated in Equation (1) [26,27]:…”

Section: Proposed Mdm-pdm-based 8 Ghz Bandwidth-enabled Photonic Radarmentioning

confidence: 99%

“…Various device-related constraints, such as shot noise, thermal noise, and amplified spontaneous noise (ASE), are considered in the analysis. The responsivity of the PIN photodiode used in this sensor is represented as ℜ, and the output photocurrent is denoted as i ph (t) given in Equation (3) as [27]:…”

Section: Proposed Mdm-pdm-based 8 Ghz Bandwidth-enabled Photonic Radarmentioning

confidence: 99%

Target Detection in Challenging Environments: Photonic Radar with a Hybrid Multiplexing Scheme for 5G Autonomous Vehicles

Chaudhary,

Sharma,

Naeem

et al. 2024

Sustainability

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The rapid deployment of 5G autonomous vehicles has placed a premium on low-latency communication and reliable sensor technologies for the real-time mapping of road conditions, aligning with sustainability objectives in transport. In response to this imperative, photonic-based radar systems have emerged as an increasingly attractive solution, characterized by their low power consumption and cost-effectiveness. This study delves into the application of linear frequency-modulated continuous wave (FMCW) techniques within photonic radar sensors for the precise detection of multiple targets. Our proposed system seamlessly integrates mode-division multiplexing (MDM) and polarization-division multiplexing (PDM) to achieve a robust target detection capability, contributing to sustainable traffic management. To assess its effectiveness, we rigorously evaluated the system’s performance under challenging conditions, marked by a high atmospheric attenuation of 75 dB/km and a low material reflectivity of 20%. Our results unequivocally demonstrate the efficacy of the MDM-PDM photonic radar in successfully detecting all four specified targets, underscoring its potential to enhance road safety in the realm of autonomous vehicles. The adoption of this technology supports sustainable mobility by mitigating human errors and optimizing the real-time mapping of road conditions.

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“…The output-modulated signal from MZM depends upon the operating point, that is, if it operates in a quadrature or at a null point [25,27]. This RF-LFM signal modulated with light is then transmitted over the free-space optics (FSO) network.…”

Section: Working Principlementioning

confidence: 99%

A Cost-Effective Photonic Radar Under Adverse Weather Conditions for Autonomous Vehicles by Incorporating a Frequency-Modulated Direct Detection Scheme

et al. 2021

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In recent years, there have been plenty of demands and growth in the autonomous vehicle industry, and thus, challenges of designing highly efficient photonic radars that can detect and range any target with the resolution of a few centimeters have been encountered. The existing radar technology is unable to meet such requirements due to limitations on available bandwidth. Another issue is to consider strong attenuation while working under diverse atmospheric conditions at higher frequencies. The proposed model of photonic radar is developed considering these requirements and challenges using the frequency-modulated direct detection technique and considering a free-space range of 750 m. The result depicts improved range detection in terms of received power and an acceptable signal-to-noise ratio and range under adverse climatic situations.

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Study on detection techniques of distance and velocity by chirped LIDAR

Cited by 8 publications

References 1 publication

Advancing Sustainable Marine Exploration: Highly Efficient Photonic Radar for Underwater Navigation Systems under the Impact of Different Salinity Levels

Advancing Sustainable Marine Exploration: Highly Efficient Photonic Radar for Underwater Navigation Systems under the Impact of Different Salinity Levels

Target Detection in Challenging Environments: Photonic Radar with a Hybrid Multiplexing Scheme for 5G Autonomous Vehicles

A Cost-Effective Photonic Radar Under Adverse Weather Conditions for Autonomous Vehicles by Incorporating a Frequency-Modulated Direct Detection Scheme

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