Observations are presented in which the standard dual-polarization meteorological quantities (ZDR, f dp, and rHV) are determined from simultaneous horizontal (H) and vertical (V) transmissions. The return signals are measured in parallel H and V receiving channels. Because the parameters are determined from simultaneous measurements they are not affected by Doppler phase shifts that increase th...

The propagation of many kinds structured light beams in uniaxial crystal has been investigated. However, the investigation evolution these after is lacking. In this paper, an formula a beam passing through derived. Based on formula, controlling autofocusing circular Airy vortex (CAVB) via studied. It found that can prolong focal length autofocusing. By changing length, relative weight left- and...

Radiometric measurements of the microwave emissivity of foam were conducted in May 2000 at the Naval Research Laboratory’s Chesapeake Bay Detachment using radiometers operating at 10.8 and 36.5 GHz. Horizontal and vertical polarization measurements were made at 36.5 GHz; horizontal, vertical, +45, 45, left circular, and right circular polarization measurements were obtained at 10.8 GHz. Surface...

We report detailed quantitative characterization of different polarization states of a single-pass, externallyseeded FEL operating with variable polarization undulators in the VUV spectral range. The experiment has been performed at FERMI FEL-1 operated in the 52–26 nm wavelength range. Three different, independent polarimeter setups, installed at the end of experimental beamlines, have been us...

Metasurfaces consisting of ultrathin nanostructures are utilized to control the properties of light including its phase, amplitude and polarization. Hereby, we demonstrate the capability of such structures to perform arbitrary polarization selective beam shaping using dielectric nanoscale metasurfaces implemented in silicon. By illuminating the structure with right handed circular polarization ...

We consider sharp focusing of a linearly polarized light beam. Using the Richards-Wolf formalism, we show that before and after focal plane there are cross-section regions in which polarization is circular (elliptical). When passing through plane, direction rotation vector reversed. If focus left-hand at definite region beam cross-section, then exactly becomes linear this region, becoming right...

polarized SAR systems. It is shown that the circular hybrid transmitting architecture limits the dynamic range of HH, HV, and VV . Conventional polarimetric linear polarized systems permit separate routage of the cross-polarized HV and VH voltage to the same receiver, and this offer the possibility of the improvement of the cross-polarized return of 6 to 9 dB in term of signal to noise ratio (S...

This paper presents a feasibility study of singlylayered dual-band reflectarray for space applications. The data links should operate simultaneously at K-band downlink frequency band 17.7-20.2 GHz with left-hand circular polarization (LHCP) and Ka-band uplink 27-30 right-hand (RHCP). main aim is to present how can be designed so as allow reconfigurability its radiation pattern, especially in te...

Abstract Taking advantage of multimaterial additive manufacturing, this work demonstrates a kind polarization‐maintaining metasurface (MS) for spin‐decoupled beam shaping. The wavefronts the two spin states, i.e., left‐hand circular polarization (LHCP) and right‐hand (RHCP), can be independently manipulated while output state remains same as input. meta‐atom is implemented with dual‐polarized a...

In this work, an innovative method for controlling the current distribution of radiating patch by adjusting input phase is investigated to achieve both pattern and polarization reconfigurable characteristics multifunction. A compact low-profile antenna with four fed ports designed implement proposed method, which can operate linear, right-hand circular (RHCP) left-hand (LHCP) different beam dir...