A fully photonics-based coherent radar systemThe next generation of radar (radio detection anddoi:10.1038/nature13078Nature
Here, we demonstrate a heterodyne synthesizer based on ultralow-noise self-injection-locked lasers, enabling highly-coherent, photonics-based microwave and millimeter-wave generation. Continuously-tunable operation is realized from 1-104 GHz, with constant phase noise of -109 dBc/Hz at 100 kHz ...
et al. A fully photonics-based coherent radar system. Nature 507, 341–345 (2014). Article CAS PubMed ADS Google Scholar Khilo, A. et al. Photonic ADC: overcoming the bottleneck of electronic jitter. Opt. Express 20, 4454–4469 (2012). Article PubMed ADS Google Scholar Mahjoubfar, ...
Bogoni, A fully photonics-based coherent radar system. Nature 507, 341 (2014) ADS Google Scholar C. F. Middleton, E. J. Grafer, J. R. DeSalvo, Photonic frequency converting transceiver and related methods, U.S. Patent 9,680,576,B1 (2017) F. Agulló López, J.M. Cabrera, F. ...
According to Sharma and Sergeyev’s simulation on non-coherent photonics radar which possesses lower atmosphere fluctuation, the detection range of the configuration of a linear frequency-modulated 77 GHz and 1550 nm continuous-wave laser could reach 260 m in heavy fog, 460 m in mild fog and ...
An FMCW LiDAR system with the coherent receiver chip is built for ranging and velocity measurement. Ranging of distance at 120 m with the precision of 0.3 m is achieved. The micron-scale silicon photonics platform can also provide the capabilities for multi-channel coherent receivers and ...
sending the first beam of light from the device to the first retroreflector; receiving the second beam of light from the first retroreflector; measuring the orientational and translational sets based at least in part on the second beam of light; determining the surface sets corresponding to the ...
Recently, fully convolutional networks (FCN) based on CNN were developed for pixel-wise semantic segmentation, which assigns a semantic label (i.e., a class) to each coherent region of an image using dense pixel-wise prediction models. They were first used for semantic segmentation of digital ...
conventional weapons. In April, the Navy announced it would deploy an onboard solid-state laser capable of firing at swarming small boats or downing unmanned aircraft (See: Navy to Put Craft-Zapping Laser on a Ship in 2014). The Laser Weapon System (LaWS) — built from commercial fiber.....
Also, space operation exposes equipment to extremes of temperature and radiation not experienced by ground-based systems, adversely affecting system lifetime. One way Coherent has addressed system lifetime is by developing radiation-resistant fiber optics for SATCOM uses. Delivering pin-point accuracy ...