Patents Assigned to ASELSAN ELEKTRONÍK SANAYI VE TICARET ANONIM SIRKETI
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Patent number: 11964917Abstract: 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.Type: GrantFiled: September 20, 2019Date of Patent: April 23, 2024Assignee: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Hansu Birol, Mehmet Erim Inal, Akin Dalkilic, Sebnem Sayginer, Ozgur Birer, Mustafa Fatih Akbostanci
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Patent number: 11959799Abstract: 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.Type: GrantFiled: August 8, 2018Date of Patent: April 16, 2024Assignee: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Metin Aktas, Toygar Akgun
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Publication number: 20240102743Abstract: 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.Type: ApplicationFiled: November 24, 2020Publication date: March 28, 2024Applicants: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETI, APAK ENDUSTRI MUHENDISLIK MAKINE SANAYI VE TICARET LIMITED SIRKETI, SABANCI UNIVERSITESI NANOTEKNOLOJI ARASTIRMA VE UYGULAMA MERKEZI, SABANCI UNIVERSITESIInventors: Ali KOSAR, Ismet Inonu KAYA, Abdolali Khalili SADAGHIANI, Alper APAK, Ahmet Muhtar APAK, Murat PARLAK, Umur TASTAN, Mehmet BONCU
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Patent number: 11933451Abstract: 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.Type: GrantFiled: October 12, 2021Date of Patent: March 19, 2024Assignee: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Mete Anakli, Caner Turker
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Patent number: 11930286Abstract: 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.Type: GrantFiled: May 17, 2022Date of Patent: March 12, 2024Assignee: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Birce Gulec Boyaci Mutlu, Tolga Aksoy
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Publication number: 20240043347Abstract: A method is provided and suggests grading of a CMC (Ceramic Matrix Composite) structure as a function of dielectric constant by altering the solid loading (SL) ratio of the individual composite layers. The slurry is applied either by impregnation into the ceramic fabrics or by coating on ceramic fibers. The final structure is prepared by piling up prepregs or weaving ceramic fibers with specific SL ratio, drying and firing.Type: ApplicationFiled: December 20, 2021Publication date: February 8, 2024Applicant: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Hansu BIROL, Hande HANEDAN, Mustafa Fatih AKBOSTANCI, Akin DALKILIC, Ozgur BIRER, Mehmet Erim INAL, Sebnem SAYGINER
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Patent number: 11885863Abstract: A method to reconstruct images from raw MRI data, and recover an image by solving an optimization problem. Hence, the method is an image reconstruction system for image recovery contrary to similar methods, the method reconstructs all images using both joint and individual objective functions. The method includes: acquiring with the MRI system, multiple images under an influence of different contrast mechanisms, wherein the different contrast mechanisms belong to a same anatomy, solving an optimization problem with an optimization algorithm using both joint and individual objective functions simultaneously for each of multiple image contrasts or a subset of the multiple image contrasts, to reconstruct the multiple images from acquired data.Type: GrantFiled: April 18, 2018Date of Patent: January 30, 2024Assignee: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Emre Kopanoglu, Alper Gungor, Huseyin Emre Guven, Tolga Cukur
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Patent number: 11872660Abstract: A method for performance determination of a heat pipe with an arbitrary liquid flow area and prescribed geometric dimensions, an external and internal structure, a heat pipe material and a working fluid, heating and cooling surface areas, and condenser cooling conditions is provided to obtain operating and performance parameters, wherein the operating and performance parameters are temperature distribution within the heat pipe, a heat transferred via a phase change and a conduction, an axial variation of a radius of curvature of a liquid-vapor interface along the heat pipe, a vapor temperature and pressure of the working fluid, by simulating a flow and an energy transfer inside.Type: GrantFiled: October 19, 2021Date of Patent: January 16, 2024Assignees: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETI, IHSAN DOGRAMACI BILKENT UNIVERSITESI, ORTA DOGU TEKNIK UNIVERSITESIInventors: Samet Saygan, Yigit Akkus, Barbaros Cetin, Zafer Dursunkaya
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Publication number: 20230395478Abstract: A Chip-Scale QFN (Chip Scale QFN, CSQFN) plastic packaging system is provided and is for high frequency integrated circuits with high electrical and thermal performance, that does not use connecting wires, which are inexpensive and reliable, whose connection to PCB can be reprocessed and that are compatible with standard SMD bonding processes on PCB.Type: ApplicationFiled: May 31, 2023Publication date: December 7, 2023Applicant: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Ahmet AKTUG, Yigit AYDOGAN, Ahmet DEGIRMENCI
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Publication number: 20230384148Abstract: A method for calculating channel-frequency feature for detecting multi channel (propagated spatially) activities in DAS sensor data is provided. This method can be generalized for linearly spaced sensor arrays. In the method, spectrograms of different channels are generated and frequency features are calculated for different time windows. In channel frequency image, frequency features are concatenated in spatial domain, so that horizontal axis represents the spatial dimension.Type: ApplicationFiled: May 30, 2023Publication date: November 30, 2023Applicant: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Muhammet Emre SAHINOGLU, Mustafa AKUR, Abdulsamet DAGASAN
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Patent number: 11830519Abstract: A method for a multi-channel acoustic event detection and classification for weak signals, operates at two stages; a first stage detects a power and probability of events within a single channel, accumulated events in the single channel triggers a second stage, wherein the second stage is a power-probability image generation and classification using tokens of neighbouring channels.Type: GrantFiled: July 30, 2019Date of Patent: November 28, 2023Assignee: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Lutfi Murat Gevrekci, Mehmet Umut Demircin, Muhammet Emre Sahinoglu
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Publication number: 20230372927Abstract: A micro-fluidic cartridge enables analysis of biological samples of fluid form particularly by means of optical systems. The micro-fluid cartridge includes a body, at least one fluid inlet located on the body, at least one channel connected to fluid inlet from one end and allowing flow of fluid there through, at least one first chamber arranged in a fluid communication with channel on the body, at least one biological chip located inside the first chamber and structured to keep certain components inside the fluid, at least one cover connected to the body in a manner preventing leakage of liquid from channel to outer environment on the body and having light penetration on part corresponding to at least biological chip.Type: ApplicationFiled: December 15, 2020Publication date: November 23, 2023Applicant: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Mustafa YORULMAZ, Akif Turker GURER, Can Burak TARHAN, Mustafa Tuncer OZTURK, Husnu Can DOGRU, Didem Lale OZKAN
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Publication number: 20230345145Abstract: 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.Type: ApplicationFiled: May 17, 2022Publication date: October 26, 2023Applicant: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Birce Gulec BOYACI MUTLU, Tolga AKSOY
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Publication number: 20230321772Abstract: A method for performance determination of a heat pipe with an arbitrary liquid flow area and prescribed geometric dimensions, an external and internal structure, a heat pipe material and a working fluid, heating and cooling surface areas, and condenser cooling conditions is provided to obtain operating and performance parameters, wherein the operating and performance parameters are temperature distribution within the heat pipe, a heat transferred via a phase change and a conduction, an axial variation of a radius of curvature of a liquid-vapor interface along the heat pipe, a vapor temperature and pressure of the working fluid, by simulating a flow and an energy transfer inside.Type: ApplicationFiled: October 19, 2021Publication date: October 12, 2023Applicants: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETI, IHSAN DOGRAMACI BILKENT UNIVERSITESI, ORTA DOGU TEKNIK UNIVERSITESIInventors: Samet SAYGAN, Yigit AKKUS, Barbaros CETIN, Zafer DURSUNKAYA
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Patent number: 11782078Abstract: A measurement method and apparatus for determining power levels of pulsed power signals, wherein the pulsed power signals are needed for some applications with a high dynamic range and a high speed simultaneously. The apparatus and the measurement method particularly used to evaluate a performance of fiber optic sensors, optical pulse generators, switching devices and debugging other pulsed power systems.Type: GrantFiled: December 25, 2018Date of Patent: October 10, 2023Assignee: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventor: Ismail Ugur
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Publication number: 20230313937Abstract: 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.Type: ApplicationFiled: October 12, 2021Publication date: October 5, 2023Applicant: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Mete ANAKLI, Caner TURKER
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Publication number: 20230318545Abstract: A planar combiner system for use in high-power multi-component power amplifier architectures in solid-state amplifiers is realized by planar placement of a wideband, low-loss, insulated and compact asymmetric Lange coupling and Wilkinson-type combiner on a base with high thermal conductivity and electrical resistance, allowing the amplifiers to directly contact the cold plate.Type: ApplicationFiled: March 30, 2023Publication date: October 5, 2023Applicant: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Ridvan SURBAHANLI, Ali Berk DEMIR, Ahmet AKTUG, Kagan Berk TANAYDIN
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Patent number: 11775837Abstract: A filter design method for a small target detection on infrared imagery using a normalized-cross-correlation layer in neural networks, including the steps of: Normalizing inputs and filters of a convolutional neural network, wherein normalizing inputs and filters of the convolutional neural network provides faster convergence in a limited database. Defining a forward function of a normalization layer in the convolutional neural network, wherein the forward function of the normalization layer in the convolutional neural network is used for training a neural network. Defining a derivative function of the normalization layer for a back propagation in a neural network training phase. Training created neural networks with datasets, wherein the datasets consist of target and background views and using trained neural networks in the small target detection.Type: GrantFiled: April 10, 2018Date of Patent: October 3, 2023Assignee: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Erdem Akagunduz, Huseyin Seckin Demir
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Publication number: 20230237788Abstract: 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.Type: ApplicationFiled: April 15, 2020Publication date: July 27, 2023Applicant: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Engin UZUN, Tolga AKSOY, Erdem AKAGUNDUZ
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Patent number: 11700040Abstract: A method is based on the user-specific frozen bit patterns of polar codes assigned to users. At the transmitter, the binary-valued user-specific frozen bit pattern sequences to be used in frozen bit locations are determined for each user, the information bits of each user are encoded using a polar encoder, and the binary-valued user-specific frozen bit patterns are used in frozen bit locations during encoding operation to improve the performance of the downlink multi-user MIMO system. Coded bits are mapped to symbols to be transmitted, and the symbols are mapped to the MIMO layers. Then, multi-antenna precoding is applied and baseband-to-RF processing is performed onto the precoded symbols to transmit the signal. The signal of all users is transmitted at the same time-frequency resources using transmit antennas. Each receiver receives the transmitted signal which is transmitted through respective downlink channels. Each user performs RF-to-baseband processing to their respective received signal.Type: GrantFiled: March 26, 2020Date of Patent: July 11, 2023Assignee: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETIInventors: Cagri Goken, Onur Dizdar