Abstract: A method that detects locations of undesired levels of signal loss in DAS systems that use optical fibers. In the method, raw DAS signals are received from an optical fiber of a DAS system with dual photodetector positioned at the end(s) of the optical fiber. Locations on the optical fiber are named “channels” having a certain length on the optical fiber and are numbered according to distances of the channels from the photodetector. The raw DAS signals received from each channel are processed by the dual photodetector to obtain raw DAS statistical data for each channel. The obtained raw DAS statistical data are then reconstructed to produce reconstructed DAS statistical data in which noise has been removed. The reconstructed DAS statistical data form power statistics for each channel. The power statistics is expected to be linearly decreasing with a farther distance of each channel from the photodetector.

Abstract: A collision avoidance system and method is provided for detecting obstacles or terrain likely to be encountered by fixed wing or rotary wing platform aircraft in bad weather conditions or at low altitude, and for alerting the user in advance.

Abstract: A slim type universal joint is used to transmit torque generated by an output/driving shaft and/or rotary motion on a rotation axis on a system of engine vehicles connected thereto into the output/driving shaft of a different axis and allows independent locking of the rotation axis. The slim type universal joint includes a locking hole, a central-lower part, a central-upper part, pin holes, an outer-lower part and an outer-upper part, a first short cap pin, a second short cap pin and a long cap pin.

Abstract: Disclosed is a method for training shallow convolutional neural networks for infrared target detection using a two-phase learning strategy that can converge to satisfactory detection performance, even with scale-invariance capability. In the first step, the aim is to ensure that only filters in the convolutional layer produce semantic features that serve the problem of target detection. L2-norm (Euclidian norm) is used as loss function for the stable training of semantic filters obtained from the convolutional layers. In the next step, only the decision layers are trained by transferring the weight values in the convolutional layers completely and freezing the learning rate. In this step, unlike the first, the L1-norm (mean-absolute-deviation) loss function is used.

Abstract: An adhesive with a refractive index of 2.0 and over is transparent at an infra-red band. A production method of the adhesive and a beam splitter prism set is provided. The beam splitter prism set separates middle and far infra-red beam paths for electro-optical monitoring systems according to wavelengths of the middle and far infra-red beam paths, wherein in the electro-optical monitoring systems the adhesive is used.

Abstract: A camera-based and direct observation based relative position determination method for multiple unmanned aerial, naval and ground vehicles is provided. The method calculates the relative position between the relevant vehicles in multiple UAV, UNV and UGV systems.

Abstract: A method for electronic calibration of a magnetic particle imaging system is provided by proposing a coded calibration scene that contains multiple nanoparticle samples distributed randomly or pseudo-randomly inside a volume of the coded calibration scene where nanoparticle positions are changed virtually multiple times to create different calibration scenes. Virtual effect is created with current carrying electromagnets surrounding the nanoparticle samples.

Abstract: An arrangement and a device including the arrangement allow nanoagents that have therapeutic or diagnostic or both therapeutic and diagnostic effects to be vaporized in a specific target area in the human body. The arrangement includes at least one primary magnetic element configured to generate a first magnetic field in a first direction, at least one secondary magnetic element configured to generate a second magnetic field substantially opposite to the first direction, at least one tertiary magnetic element configured to generate a time-varying magnetic field to excite magnetic nanoparticles located in a magnetic field-free region where the opposite first magnetic field and the second magnetic field suppress each other's effects, at least one receiving coil configured to measure the magnetization of magnetic nanoparticles, and at least one first ultrasound transducer configured to apply ultrasound energy by providing acoustic waves onto the nanoagents located in the magnetic field-free region.

Abstract: A method for constructing multiple ceramic layers by winding continuous ceramic filaments of identical composition to prepare multilayer RF-transparent structures is provided. In the method, identical continuous ceramic filaments are wound to construct a layer with specific dielectric constant according to patterns, characterized by the winding angle, winding density/inter-fiber aperture and winding count/layer thickness. Layers with same or different dielectric characteristics forms a sandwich design to fulfill the desired mechanical, thermal and electrical requirements.

Abstract: A noise elimination method for detection applications to increase performance, robustness and efficiency is provided. The noise elimination method including the following steps of; initialization; candidate generation; obtain sensor data; obtain a transformation matrix; warping candidate signals into a Cumulative Signal Frame (CSF); get a next candidate; process a last candidate; query a set handler; add the candidate signals into the set handler; warp the candidate signals onto the CSF; add the candidate signals to the CSF at a warped position; process the CSF; interpret the CSF and generate target candidates; detect decisions and terminate.

Abstract: A printed circuit board cooling structure is provided, where a printed circuit board (PCB) is fixed to the printed circuit board cooling structure for cooling and meeting mechanical and electrical requirements. The printed circuit board cooling structure includes a cooling case in which printed circuit boards (PCB) are cooled with air or fluid, and a cold plate structure which is placed in the case made from a slit opened in the relevant board area of the cooling case, transfers the heat to chassis (case) wall, and eliminates wedge mechanism.

Abstract: A method of obtaining X-Model/Plus-Model filter by combining and then mathematical reducing SSF (Sharpening Spatial Filter) and CF (Clamp Filter) and scaling high quality video with this filter in real time on field programmable gate array (FPGA) is provided. With the method, the developed X-Model/Plus-Model filter was applied before the application of interpolation to increase the quality of the scaled video. The said filter is applied in real time with advantages such as low computational complexity, low memory requirement, low power and low resource consumption, and high operating frequency.

Abstract: A collision avoidance system and method is provided for detecting obstacles or terrain likely to be encountered by fixed wing or rotary wing platform aircraft in bad weather conditions or at low altitude, and for alerting the user in advance.

Abstract: A microbolometer detector with adjustable spectral reactivity includes a reflective element between a suspended pixel body and a base section, a bimetallic arm, one end of which is connected to one end of the reflective element and the other end to the base section via the electrode connection, the temperature of which is increased by passing current, and changes the height of the reflective element by expanding with the increase in temperature.

Abstract: A hybrid planar combiner for use in broadband high power multi-component power amplifier architectures in planar solid-state power amplifiers, which does not comprise impedance converters in the power amplifier layer, is suitable for hermetic construction, supports effective cooling infrastructure and enables easy in-circuit applications.

Abstract: A method for constructing a plurality of ceramic layers by winding continuous ceramic filaments to prepare RF-transparent structures is provided. Dielectric properties of each layer of the plurality of ceramic layers are characterized by an inter-filament spacing, a filament count and thickness. Once the plurality of ceramic layers are constructed, a structure is removed from a winding surface, wherein the winding surface is a mandrel, infiltrated with a resin in a separate set up and fired.

Abstract: A phase sensitive optical time domain reflectometry based distributed acoustic sensing system eliminating a degradation in a sensing performance encountered due to a finite extinction ratio of optical elements used to generate optical pulses is provided. A classical Optical Time Domain Reflectometer (OTDR) concept and a phase-OTDR concept are merged to generate an optic pulse for an interrogation with commercially available optic modulators. Characteristics of a light inside a fiber optic cable carry properties of both classical OTDR and phase-OTDR systems. The proposed solution does not require any modifications in a receiver part of the phase-OTDR systems and the proposed solution is used for any type of phase-OTDR system structure.

Abstract: Optimized 3-D graphene structures used to enhance thermal performance of the thermal systems such as vapor chambers are provided. The porosity of the wick/porous structure has a critical effect on the efficiency of a vapor chamber system. Graphene coating provides high thermal conductivity, and it has a high porous structure, which is favorable for vapor chamber devices.

Abstract: A positioning platform providing positioning of component placed thereon onto four axes includes a lower plate, an upper plate, a first adjustment member, a second adjustment member, a third adjustment member, connection members, fixing members, a first fixing block, a second fixing block, fixing plates, slot fixing members, fixing covers, a yaw screw, a spring pin, a spring, and a yaw block.

Abstract: A method that determines optical path maintenance need before any critical failure in operation of the system is provided. In order to indicate the maintenance need due to the defocusing, the pixel-wise offset value differences between 2 point NUC and 1 point NUC are examined. When the width of this pixel-wise offset difference histogram is greater than predefined threshold, maintenance need is raised. The change in detector characteristics and the need for 2 point NUC/BPR update are proposed to be determined after 1 point NUC by controlling the total number of the bad pixels and bad pixel clusters.