Multi-Frequency Lidar/Radar Integrated System for Robust and Flexible Doppler Measurements

Scotti, Filippo; Onori, Daniel; Scaffardi, M.; Lazzeri, Emma; Bogoni, Antonella; Laghezza, Francesco

doi:10.1109/lpt.2015.2461458

Cited by 19 publications

(14 citation statements)

References 13 publications

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“…In addition to the photonic measurements to microwave signal parameters, functional measurement systems enabled by photonics have been considerably developed within recent years, such as fully photonics‐based coherent radars for remote ranging, positioning and imaging .…”

Section: Functional Measurement System: Photonic Microwave Radarsmentioning

confidence: 99%

“…An innovative coherent radar‐lidar architecture has also been proposed to provide versatile functionalities. For example, an architecture for integrating a photonic radar (e.g., X‐band and Ku‐band) and a lidar with a tunable tone separation was designed and , characterized by the manifold advantages from both radar and lidar. Experimentally, different tone separations or spacings of 10, 40, 80, or 160 GHz were specified for velocity measurement.…”

Section: Functional Measurement System: Photonic Microwave Radarsmentioning

confidence: 99%

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Photonics for microwave measurements

Zou

Lü

Pan

et al. 2016

Laser & Photonics Reviews

304

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As an emerging topic, photonic-assisted microwave measurements with distinct features such as wide frequency coverage, large instantaneous bandwidth, low frequencydependent loss, and immunity to electromagnetic interference, have been extensively studied recently. In this article, we provide a comprehensive overview of the latest advances in photonic microwave measurements, including microwave spectrum analysis, instantaneous frequency measurement, microwave channelization, Doppler frequency-shift measurement, angle-of-arrival detection, time-frequency analysis, compressive sensing, and phase-noise measurement. A photonic microwave radar, as a functional measurement system, is also reviewed. The performance of the photonic measurement solutions is evaluated and compared with the electronic solutions. Future prospects using photonic integrated circuits and software-defined architectures to further improve the measurement performance are also discussed.

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Section: Functional Measurement System: Photonic Microwave Radarsmentioning

confidence: 99%

Section: Functional Measurement System: Photonic Microwave Radarsmentioning

confidence: 99%

Photonics for microwave measurements

Zou

Lü

Pan

et al. 2016

Laser & Photonics Reviews

304

View full text Add to dashboard Cite

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“…The scheme of the operation principle is depicted in Fig.1. The two optical carriers are generated by a tunable dual frequency laser source (T-DFL), which could be implemented resorting, e.g., to a coherent frequency comb [24], a MLL [23], or directly to a dual frequency laser [25]. The two modes present electrical fields E1(t) and E2(t) centered at the optical frequencies 1 and 2, respectively, separated by f ( Fig.1-A).…”

Section: Principle Of Operationmentioning

confidence: 99%

“…These two couples of modes, separated by a frequency 2fM, will be exploited for the interferometric estimation of the target range. Furthermore, since their central frequencies 1 and 2 are in turn separated by f, the experienced differential Doppler can also be estimated [23]. This signal is transmitted through a telescope to the target which reflects it back.…”

Section: Principle Of Operationmentioning

confidence: 99%

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Coherent Interferometric Dual-Frequency Laser Radar for Precise Range/Doppler Measurement

Onori

Scotti

Scaffardi

et al. 2016

J. Lightwave Technol.

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A novel coherent interferometric dual frequency laser radar that merges the concept of laser and radio detection and ranging (ladar and radar respectively), for both range and velocity measurement, is presented and experimentally demonstrated. The innovative architecture combines the broadband tunability of dual-wavelength optical sources, enabling a dynamic trade-off between precision and robustness in Doppler estimation, with the high stability of low frequency RF sources for the interferometric measure of the target range with extreme accuracy. The possibility to easily reconfigure the employed frequencies, allows to change the Doppler resolution, as well as the range ambiguity and precision, to dynamically adapt the system to reliably operate in different environments. Moreover, the coherent detection allows to enhance the signal to noise ratio reaching excellent performances also with low level of received power. The laboratory characterization provides an estimation of the system performances, in terms of resolution and sensitivity, as well as the indoor demonstration with targets of opportunity proves the effectiveness of the proposed architecture to operate in real scenarios.

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Photonics‐Based Microwave Frequency Mixing: Methodology and Applications

Tang

Yao

et al. 2019

Laser & Photonics Reviews

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Photonics‐based microwave frequency mixing provides distinct features in terms of wide frequency coverage, broad instantaneous bandwidth, small frequency‐dependent loss, and immunity to electromagnetic interference as compared with its electronic counterpart, which can be a key technical enabler for future broadband and multifunctional RF systems. Herein, all‐optical and optoelectronic microwave frequency mixing techniques are reviewed, with an emphasis on the latest advances in photonics‐based microwave frequency mixers with improved performance in terms of conversion efficiency, dynamic range, mixing‐spur suppression, mixing functionality, and polarization independence. Innovative applications enabled by photonics‐based microwave frequency mixers, such as radio‐over‐fiber communication systems, radar systems, satellite payloads and electronic warfare systems, are also reviewed. In addition, efforts in implementing integrated photonics‐based microwave mixers that lead to a dramatic reduction in size, weight, and power consumption are also reviewed.

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Multi-Frequency Lidar/Radar Integrated System for Robust and Flexible Doppler Measurements

Cited by 19 publications

References 13 publications

Photonics for microwave measurements

Photonics for microwave measurements

Coherent Interferometric Dual-Frequency Laser Radar for Precise Range/Doppler Measurement

Photonics‐Based Microwave Frequency Mixing: Methodology and Applications

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