Abstract: A dadome with a surface varying refraction angle for phased array antennas, includes an electromagnetic wave active area which consists of a dielectric substrate and two dual-polarized meta-surfaces. The dual-polarized meta-surfaces are made of plurality of periodically arranged metallic meta-atoms with open, rotational symmetric, and non-continuous geometrical patterns. The meta-atoms overlap complementarily between the two sides of the dielectric substrate and are periodically arranged into at least two groups covering a space region the angular radiation pattern of a planar array antenna. The geometric dimensions of the meta-atoms vary within each group so that to form an electromagnetic transmissive phase gradient within that group and different from one group to another. The periodicity ?p of the meta-atoms is between ?/4 and ?/1.3, ? being the wavelength of an incident electromagnetic wave from a planar array antenna.

Abstract: A method for simulating the effects of the optical quality of windshield onto the image recording quality of a digital image recording device, in particular a digital image recording device for an advanced or automated driver-assistance system. The method is based on a combination of an adapted stochastic ray tracing method and of a convolutional image processing to simulate the effects of the optical distortions of a windshield on the image recording quality of a digital image recording device. The simulation is performed from a measured optical quality function of the windshields related to those optical distortions.

Abstract: A method for simulating the effects of the optical quality of windshield onto the image recording quality of a digital image recording device, in particular a digital image recording device for an advanced or automated driver-assistance system. The method is based on a combination of an adapted stochastic ray tracing method and of an adapted machine learning method to simulate the effects of the optical distortions of a windshield on the image recording quality of a digital image recording device. The simulation is performed from a measured optical quality function of the windshields related to those optical distortions.

Abstract: A method for simulating the effects of the optical quality of windshield onto the image recording quality of a digital image recording device, in particular a digital image recording device for an advanced or automated driver-assistance system. The method is based on a combination of an adapted stochastic ray tracing method and of a convolutional image processing to simulate the effects of the optical distortions of a windshield on the image recording quality of a digital image recording device. The simulation is performed from a measured optical quality function of the windshields related to those optical distortions.

Abstract: According to a first aspect, a method of designing a radome may include defining a set number N of flight paths FPN, where each flight path FPN is between a first city and a second city, determining a Looking Angle Distribution (L?-Dist) for each flight path FPN, calculating a Combination Looking Angle Distribution (Combo-L?-Dist) for the set number N of flight paths FPN, determining a Combination Incidence Angle Distribution (Combo-I?-Dist) corresponding the Combo-L?-Dist, and tailoring at least one radome shell structural component of the radome to minimize electromagnetic degradation of electromagnetic waves intersecting the radome at angles within the Combo-I?-Dist.