Abstract: The embodiments generally relate to an antenna device that includes a cover having a specific shape to suppress a sidelobe of an elevation angle gain pattern which is caused by a radio-frequency (RF) device regardless of an avoidance area.

Abstract: A gas sampling apparatus having a sampling film in a cartridge includes the cartridge configured to store and send the sampling film out, and the sampling film detachable from the cartridge, wherein the sampling film is configured to adsorb a target material and prevent disturbance between sampled target materials.

Abstract: A phased array antenna includes a transmission unit of a first layer including a plurality of first plates having a polygonal profile, a reception unit of a second layer including a plurality of second plates having a polygonal profile, the reception unit being spaced apart from the transmission unit in a first direction, and a circuit unit arranged within an internal space defined by the transmission unit and the reception unit.

Abstract: Disclosed are a method and an apparatus for improving circuit health. The method includes obtaining an S-parameter plot of a circuit having an input port and an output port; determining a resonance frequency of the circuit based on the S-parameter plot; and estimating the health of the circuit based on the resonance frequency.

Abstract: A quantum source includes: a quantum source generator dividing a pump beam into a plurality of channels and generating a plurality of signals and a plurality of idlers using nonlinear crystals respectively located optical paths of the plurality of channels; and an entangled photon pair combiner outputting an enhanced signal by combining the plurality of signals and outputting an enhanced idler by combining the plurality of idlers.

Abstract: A lithium anode of a thermal battery may include a metal alloy foam in which a plurality of pores is formed and including nickel (Ni), iron (Fe), chromium (Cr), and aluminum (Al) mixed in a predetermined composition ratio, and lithium impregnated into the metal alloy foam in a molten state and accommodated in the pores, wherein the chromium in the composition ratio may facilitate the impregnation of the lithium into the pores and reduce the reactivity of the metal alloy foam to the lithium at an operating temperature of the thermal battery, and the aluminum in the composition ratio may facilitate the impregnation of the lithium into the pores and prevent the lithium from penetrating into a surface of the metal alloy foam.

Abstract: Provided are a method and apparatus for creating a composite image, by which the state of a target may be effectively expressed, and a computer program stored in a recording medium to execute the method. The composite image creating method, performed by a computing apparatus, of synthesizing an input image to a target image, includes identifying information of the input image by obtaining the input image, generating a projected image based on information about a position in units of sub-pixels for the target image of the input image, by using information of the input image, generating a reduced image by reducing the projected image at a ratio corresponding to the target image, and synthesizing the reduced image to the target image.

Abstract: This application relates to a signal filtering device. The device includes a memory and a processor. The processor may generate one or more matrices based on a size of a digital filter bank that generates an output signal by dividing an input signal into a plurality of channels and store in the memory each of the generated one or more matrices to which a plurality of digital filter bank coefficients or a plurality of input signals are assigned. The processor may also partially calculate the stored plurality of digital filter bank coefficients and the plurality of signals based on a number of at least some of the plurality of channels, and calculate the calculated digital filter bank coefficients and signals. The processor may further perform a discrete Fourier transform (DFT) on the calculated signal and compensate for a phase of the discrete Fourier transformed signal according to a preset reference.

Abstract: This application relates to a method for designing a non-uniformly spaced linear array antenna. The method includes setting a cost function for spacing between a plurality of antennas comprised in a linear array and for weights for each of the antennas, with limits on side lobe level and bandwidth, and obtaining an initial best solution vector for the cost function under an initial environmental condition based on learning parameters. The method may further include updating the initial best solution vector through reinforcement learning in which a reward value is computed by comparing a sub best solution vector with each of a plurality of solution vectors for the cost function under a sub environmental condition based on the initial best solution vector. The method may further include determining the spacing between the plurality of antennas and the weights for each of the antennas based on the updated initial best solution vector.

Abstract: Provided is a hybrid drive device including a main power source; an auxiliary power source; a main deformation part configured to be deformable in response to receiving a voltage from the main power source; and an auxiliary deformation part configured to connect to the main deformation part and to be deformable in response to receiving a voltage from the auxiliary power source.

Abstract: The disclosure generally relates to techniques for efficiently allocating resources allocated from a macro base station by estimating the communication possibility of each sensor without direct communication with the sensor in a mobile base station. A method for resource allocation in a mobile base station may include detecting at least one sensor within a communicable range of the mobile base station, estimating a communication possibility of the sensor based on a message queue and a remaining battery level of the at least one sensor, receiving resource allocation from a macro base station based on the communication possibility, and allocating the allocated resource to the sensor.

Abstract: The present disclosure relates to an avionics electronic warfare simulation apparatus and a control method thereof. The avionics electronic warfare simulation apparatus includes an electromagnetic wave generator that generates a virtual electromagnetic wave by using at least one of a plurality of electronic warfare threat models, an electronic warfare engagement simulation unit that simulates an operation of an aircraft according to a preset operation scenario to engage the electromagnetic wave and the aircraft based on the operation scenario, and a direction finding simulation unit that performs direction finding using the electromagnetic wave based on a plurality of antennas mounted on the aircraft to output direction finding result information.

Abstract: An ultra-high frequency power combiner according to the disclosure includes a first input line connected to a first input port, a second input line connected to a second input port, an output line connected to an output port, a first transmission line between the first input line and the output line, a second transmission line between the second input line and the output line, a first series capacitor, a resistor, and a second series capacitor connected in series between a first node between the first input line and the first transmission line and a second node between the second input line and the second transmission line, and a first parallel capacitor, an inductor, and a second parallel capacitor connected in parallel with the resistor and connected in series with one another.

Abstract: Provided is a method of generating a squeezed quantum illumination light source, including generating a dual mode squeezed light source including a signal mode and an idler mode, obtaining a degree of additional squeezing for the dual mode squeezed light source based on object information, determining a squeezing angle and a degree of operation that satisfy the degree of additional squeezing for each of the signal mode and the idler mode, and squeezing the dual mode squeezed light source based on the squeezing angle and the degree of operation, and provided is a quantum radar device using the squeezed quantum illumination light source.

Abstract: This application relates to a jamming signal generating apparatus. In one aspect, the jamming signal generating apparatus includes a signal analyzer configured to perform measurement and analysis of a radar reception signal, and a radio frequency (RF) source signal output device configured to receive the radar reception signal and to output a video signal by reflecting the measurement and the analysis. The jamming signal generating apparatus may also include a frequency up converter configured to output a jamming signal and a jamming transmission signal measurement device configured to receive the video signal and the jamming signal and to obtain a jamming to signal ratio (JSR).

Abstract: The present disclosure relates to an attack group classifying apparatus. The apparatus includes a feature extracting unit configured to extract, from a data set including documents of specific formats, features for identifying attack groups using the documents of the specific formats and an information generating unit configured to generate a machine learning data set based on the extracted features. Further, the apparatus further includes a learning model unit configured to execute a machine learning algorithm on the machine learning data set to generate a classification model for identifying the attack groups.

Abstract: A funnel-shaped underwater energy harvesting equipment includes a piezoelectric element configured to be installed at a seabed and to be moved by a fluid in order to convert vibration energy into electricity. The funnel-shaped underwater energy harvesting equipment further includes a fluid collector coupled to the piezoelectric element and configured to increase velocity of the fluid flowing toward the piezoelectric element. The harvesting equipment exhibits improved energy conversion efficiency, while simplifying the shape of the harvesting equipment.

Abstract: A damage matrix generating device proposed. The damage matrix may include a memory and a processor configured to control the memory. The processor may acquire warhead fragment data obtained by classifying mass and number of fragments scattering in given directions as a warhead is detonated, and target vulnerable area data obtained by classifying a vulnerable area according to an encounter relationship between a fragment and a target. The processor may also generate a virtual target based on an approach direction of the fragment to each of the grids, the grids dividing a ground plane. The processor may further generate a damage matrix by extracting encounter information of fragments to meet the virtual target as the fragments scatter in the given directions based on the warhead fragment data and calculating a damage probability for each ground location according to the encounter information based on the target vulnerable area data.

Abstract: Provided is an electronic device that determines a final steering value and a final throttle value for controlling driving of a vehicle through a pre-trained first and second neural networks, and a method for operating the same.

Abstract: A band antenna EMP filter apparatus having HEMP protection capability is disclosed. The apparatus includes a discharging part, a band pass filtering part, and a residual current eliminating part. The discharging part primarily discharges a transient voltage due to a high altitude electromagnetic pulse (HEMP) when the HEMP is inputted through an input part receiving a radio frequency (RF) signal of an antenna. The band pass filtering part secondarily blocks a residual current primarily discharged by the discharging part and passes only a signal of a preset frequency band to output it through an output part. The residual current eliminating part limits a transient voltage of the HEMP by eliminating a residual current passing through the band pass filtering part.