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A demonstrator of DC offset-free direct conversion receiver is presented. The innovative architecture exploits optical domain up-conversion and photonic I/Q demodulation to perform a wideband scanning of the RF input spectrum avoiding bulky multiple crystal oscillators and bandpass filters. Moreover, the scheme provides a total immunity to local oscillator self-mixing and to RF-to-baseband feedthrough...
A demonstrator of DC offset-free direct conversion receiver is presented. The innovative architecture exploits optical domain up-conversion and photonic I/Q demodulation to perform a wideband scanning of the RF input spectrum avoiding bulky multiple crystal oscillators and bandpass filters. Moreover, the scheme provides a total immunity to local oscillator self-mixing and to RF-to-baseband feedthrough...
This paper presents an innovative photonics-based ultra wideband RF receiver for spectrum sensing applications. The scheme scans the RF spectrum at discrete steps, down-converting at baseband single portions of the detected spectrum, where they can be precisely acquired. The down-conversion is performed modulating a tunable optical carrier with the RF signal, and beating it with an optical local oscillator...
We present the design and simulative results of an innovative RF receiver based on photonic techniques that quickly scans the RF band of interest in warfare applications, avoiding the spectrum channelization and thus reducing the receiver SWaP. The scheme is based on a stable mode-locked laser and a specifically designed tunable optical filter, and it simultaneously samples, filters, and down-converts...
A novel coherent radar/lidar integrated architecture is proposed. It is based on previously published photonic-assisted radar and presents an innovative lidar scheme. The proposed lidar sensor exploits the same mode locked laser used for radar, minimizing the additional required hardware and power budget. Moreover an integrated radar/lidar system, merging the peculiarities of both the sensors, can...
This work shows the concept, performance, and field-trials of the first photonics-based radar. The comparative in-field experiments in aerial and naval scenarios against a state-of-the-art commercial system show the photonics potentials in enabling software-defined radars.
The field trial results of the first photonics-based fully digital radar system are presented. The system has been developed in the PHODIR project, and is tested here in a real aerial scenario with non-cooperative targets. The innovative radar is described, and the results are presented and discussed.
The field trial results of the first photonics-based radar system in a real maritime environment are presented in this paper. The exploited prototype is the final outcome of the ERC-funded project PHODIR (PHOtonics-based fully DIgital Radar). The system exploits photonic technologies for both the generation and the detection of radar RF signals, allowing increased performance and an unprecedented...
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