TL;DR: In this paper, the authors proposed a phaser capable of improving actual signal detection accuracy by suppressing generation of a virtual image even in the case where multiple signals are proximate, and a phasing processing method.
Abstract: PROBLEM TO BE SOLVED: To provide a phaser capable of improving actual signal detection accuracy by suppressing generation of a virtual image even in the case where multiple signals are proximate, and a phasing processing method.SOLUTION: The phaser comprises: a covariance matrix calculation part for calculating a covariance matrix on the basis of a sensor output signal indicating signals arriving at multiple sensors constituting an array; an eigenvalue decomposition processing part for separating a space into a signal subspace and a noise subspace on the basis of the covariance matrix and acquiring an eigenvector belonging to the signal subspace or the noise subspace; an azimuth estimation processing part for estimating an azimuth of arrival of the sensor output signal; and a weight calculation part for making the estimated azimuth correspondent to the eigenvector belonging to the signal subspace, and calculating an adaptive weight corresponding to each azimuth. When calculating an adaptive weight corresponding to a predetermined azimuth, the weight calculation part calculates the adaptive weight while excluding a component of an eigenvector corresponding to the predetermined azimuth.SELECTED DRAWING: Figure 5
TL;DR: Empirical results clearly demonstrate that changing the phase configuration of PHASER can generate diverse anisotropic radiation patterns that improve link quality or spatial reuse and it is shown it is possible to take advantage of the anisotropy of the radiation patterns to facilitate spatial reuse.
Abstract: This paper describes the design and empirical evaluation of PHASER — a mote prototype for low-power directional communication in wireless sensor networks PHASER has a modular design that includes three components: a low-power radio, an RF signal processing chip, and two off-the-shelf antennas Directional communication is achieved by splitting the output signal from the low-power radio chip and controlling programmatically the phase of each signal as it transmitted to each antenna The net effect of controlling the phase of the signals is that they generate patterns of constructive and destructive interference as signals propagate PHASER is well-suited for wireless sensor networks as it does not require heavyweight signal processing techniques and consumes minimal additional energy We have extensively evaluated the performance of five PHASER prototypes Empirical results clearly demonstrate that changing the phase configuration of PHASER can generate diverse anisotropic radiation patterns The diverse radiation patterns may be used to increase the signal strength at an intended receiver Our data indicates that the signal strength of a link can be increased by at least 13 dBm We also show it is possible to take advantage of the anisotropy of the radiation patterns to facilitate spatial reuse More importantly, we show that the quality of the links from the same PHASER mote has a common pattern that can be predicted using a simple model Our evaluation shows that model introduces an median absolute error of about 2 dBm The model may be used for realistic simulations or integrated into protocol stacks to identify the phase configurations that improve link quality or spatial reuse
TL;DR: This paper presents a new switchable reflective phaser, which is a component providing arbitrary dispersive group delay response, used for chirping modulation in real-time analog signal processing and transfers these two circuits into a single symmetrical filter network by applying odd/even-mode analysis.
Abstract: This paper presents a new switchable reflective phaser (which is a component providing arbitrary dispersive group delay response) for the first time. It is used for chirping modulation in real-time analog signal processing. Timedomain signals are modulated with two different dispersive group delay responses in correspondence to two different switch states. To efficiently design this new component with two different states, we transfer these two circuits into a single symmetrical filter network by applying odd/even-mode analysis, and subsequently apply the classic filter approaches. A design example is provided to illustrate the design approach. The result is in a good agreement with the prescribed response.
TL;DR: The type-2 phaser was a pistol-shaped weapon used in the Star Wars universe. It was effective and easy to use.
Abstract: The type-2 phaser consisted of a pistol-shaped base which contained additional power cells and controls. The small type 1 phaser snapped into the top of the unit. The type 2 phaser was normally carried on an equipment belt. It was not usually issued on diplomatic or sensitive missions. The pistol grip and simple controls made it an effective weapon that could be adjusted and fired on short notice. I'm doing this for a class. Figured I'd go the extra mile with a bit of lore or whatever. Source: Objaverse 1.0 / Sketchfab
TL;DR: Theoretical analysis shows that the varactors add a transmitting pole to the frequency response of the phaser and that this pole addition leads to a wide passband in addition to the group delay tunability provided by thevaractors.
Abstract: This paper proposes a tunable phaser consisting of a conventional C-section incorporating two small-value varactors. Theoretical analysis shows that the varactors add a transmitting pole to the frequency response of the phaser and that this pole addition leads to a wide passband in addition to the group delay tunability provided by the varactors. A proof-of-concept design example is provided. Such a tunable phaser is expected to find wide applications in dynamic Real-Time Analog Signal Processing (R-ASP).
TL;DR: The provided text describes a strategy to improve phasing of whole-genome sequenced individuals through integration of familial information from dense genotype panels. The text includes a detailed list of SNPs used in the study.
Abstract: Additional file 2: Table S2. Detailed list of the panel of SNPs from WGS data obtained with more traditional filtering rules. Full list of the 13,175,535 SNPs obtained with more traditional variant filtering rules and used in this study for illustrative purpose (chromosome, position in base-pairs, identifier, reference and alternative alleles).
TL;DR: In this paper, the authors introduce the concept of polarization dispersive (PD) antenna, which consists of a patch radiator orthogonally fed by a network composed of a power divider with a phaser-loaded arm and a transmission-line loaded arm.
Abstract: This paper introduces the concept of polarization-dispersive (PD) antenna. The antenna consists of a patch radiator orthogonally fed by a network composed of a power divider with a phaser-loaded arm and a transmission-line-loaded arm. The PD characteristic is realized by designing the phaser such that the phase difference at the two excitation points varies, across a specified frequency range, from −90° to +90° through 0°, corresponding to a meridional excursion from left-handed circular polarization (LHCP) to right-handed circular polarization (RHCP) via linear polarization (LP) in the Poincare sphere. A proof-of-concept PD antenna design is demonstrated and applied to encrypt a communication link. A more sophisticated system will be presented at the conference, where, using simultaneously full Poincare-sphere mapping and dispersion coding, will lead to much more robust encryption for high-speed communication.
Ros-Freixedes Roger, Battagin Mara, Gorjanc Gregor, Hickey John
18 Dec 2017
Abstract: Additional file 1: Figure S1. Expected haplotype phasing accuracy against the sequencing investment on a focal family as estimated using AlphaFamSeq (Battagin and Hickey, unpublished). Description: AlphaFamSeq is a family-based method that performs phasing and imputation of markers using variable coverage sequence data. The algorithm requires sequence observations and at least three generations of pedigree as input. It first performs phasing using the sequence data of an individual itself, then refines and improves the phasing using sequence data from the individualâ s parents and grandparents, builds a family level consensus haplotype and uses this to improve the phase and impute missing information for all individuals in a family of seven members.
Abstract: During full-moon periods, MICROSCOPE\'s science mode must be interrupted due to star-tracker dazzling. However, the two-way transitions with the auxiliary magnetic-control AOCS mode require the use of the star-tracker near Moon-glare time-slots\' limits. Since the attitude-laws of the two modes are completely different, a specific slew sequence is calculated along with precise orbital-position phasing to significantly minimize the interruption. Moreover, mission -planning requires anticipated knowledge of the unavailability slots over the entire mission. This constraint, and the need for a fully automated calculation, is addressed by a dedicated prediction model of moon-glare slots and of the associated slew calculation input parameters.
Nicolas Foos, Max H. Nanao, Carolin Seuring, Robin Schubert, Anja Burkhardt, Olof Svensson, A. Meents, Henry Chapman
24 Oct 2017
TL;DR: X-ray diffraction data collected on Pilatus detector with Mesh and Collect strategy at ESRF. Images are in .cbf format. Contain data for Thaumatin and Cubic Insulin.
Abstract: Diffraction images collected on dectris Pilatus. Format of images in *.cbf. Images collected with Mesh and Collect strategy at ESRF. Thaumatin : contain 6 sets of exposure reflecting 6 increasing Dose (from 1 to 6) Cubic Insulin : contain 3 sets of sub-data sets : Before_1 and Before_2 (means before UV irradiation). and After : (after UV irradiation). For full information refer to material and method in : (submit, will be update)
TL;DR: The trusted set of SNPs from WGS data is a list of SNPs that have been verified to be accurate and reliable.
Abstract: Additional file 1: Table S1. Detailed list of the trusted set of SNPs from WGS data. Full list of the 5,185,663 SNPs referred in the current study as the trusted set of SNPs from WGS data (chromosome, position in base-pairs, identifier, reference and alternative alleles).