In a continuing evaluation of the ERS-1 C-band scatterometer as a tool for studying polar sea ice, we evaluate the azimuthal modulation characteristics of Antarctic sea ice. ERS-1 AMI scatterometer mode data sets from several study regions dispersed in the Antarctic seasonal sea ice pack are evaluated for azimuthal modulation. When appropriate, the incidence angle dependence is estimated and re...

Results are presented from a multi-instrument study showing the influence of geomagnetic substorm activity on the spatial distribution of the high-latitude ionospheric plasma. Incoherent scatter radar and radio tomography measurements on 12 December 2001 were used to directly observe the remnants of polar patches in the nightside ionosphere and to investigate their characteristics. The patches ...

Modulation is the technique in which carrier signal varies according to amplitude of modulating signal. A brilliant solution for realizing digital modulators is CORDIC (CO-ordinate Rotation Digital Computer) algorithm. Rotation mode and vector mode are two modes in which this algorithm is used. Here rotation mode is used to convert the coordinates from polar mode to rectangular mode. This paper...

N-polar AlGaN epi-layer was realized on AlN seeding layer grown with a novel flow-modulation method. The polarity reversion from Al(Ga)-polar to for AlGaN/AlN films confirmed by KOH etching and subsequent observation optical microscope as well high-resolution X-ray diffraction (HR-XRD) measurement. In particular, the dependence of crystalline quality defect size in epi-layers V/III ratio invest...

Polar dielectrics are being actively investigated as a promising platform for mid-infrared nanophotonics, and it indicates dramatic nonlocal phenomena at the nanoscale. Based on full-wave extended Mie theory, we analytically derive equivalent permittivity of polar dielectric nanospheres. Then, establish conditions surface phonon amplification by stimulated emission radiation core-gain shell nan...

The crystal structure of para-methyl-l-phenylalanine at 230 K resembles that of the para-fluorinated analogue from the literature but is commensurately modulated with seven molecules in the asymmetric unit (Z' = 7). At 100 K, the superstructure loses its modulation, leading to a unit cell with Z' = 1, with clear disorder in the phenyl ring orientations. The methyl-substituent in para-methyl-l-p...

Abstract Our ability to identify the sources of cosmic rays and understand how these particles propagate through interstellar medium is hindered by combined effects solar wind its embedded magnetic field, collectively known as modulation. In this paper, we build upon our previous work model constrain modulation on cosmic-ray spectrum, using data from A MS-02 BESS Polar II collected between 2007...

Non-constant envelope modulation schemes have become commonplace in cellular applications due to their higher spectral efficiency. Linear PAs driven by an RF transmitter are usually used to generate these signals faithfully at the expense of power efficiency. Separate processing of amplitude and phase information (e.g., EER or polar modulation) has been proposed [1] as a way of improving the sy...

In this research paper, we present a novel frame work for handling $m$-polar information by combining the theory of $m-$polar fuzzy  sets with graphs. We introduce certain types of edge regular $m-$polar fuzzy graphs and edge irregular $m-$polar fuzzy graphs. We describe some useful properties of edge regular, strongly edge irregular and strongly edge totally irregular $m-$polar fuzzy graphs. W...