Abstract: The present invention provides a noise modeling method to improve the speech recognition quality to help the recognition system perform better in real-life environments. With this method, we not only add noise to the training audio signal to simulate different environments, but we also add noise labels to the speech transcripts. Since then, the recognition model will perform better in different environments and increase the accuracy of the recognition model.

Abstract: Integration driving mechanism for fin control assembly applied for UAV, aerial observation equipment, comprises: the control assembly, the fin root assembly, the fin shaft. The control assembly is small size, high temperature operation, waterproof ability, vibration resistance, easily replacement and reparation that is still warrant the operation condition.

Abstract: The invention presents a system and a method for 3D human reconstruction using a compact kit of depth cameras. Instead of using complex and expensive devices as in traditional methods, the proposed system and method employs a simple, easy-to-install system to accurately collect the human body shape. The generated model is capable of moving thanks to a skeleton system simulating the human skeleton. The proposed system includes four blocks: Data Collection Block, Point Cloud Standardization Block, Human Digitization Block and Output Block. The proposed method includes five steps: Point Cloud Collecting, Point Cloud Filtering, Point Cloud Calibrating, Point Cloud Optimizing and 3D Human Model Generating.

Abstract: The semi-automatic data sample collection process for the face recognition system provides the facial data collection stages, made simple, easy to use in practice. The process includes the following main steps: reference image selection - frontal image of the sampled person’s face, adjusting the viewing angle to increase data diversity, automatic storage of image data and related information during sampling into the database. Thanks to automatic clustering, evaluation and storage, data collection time and effort are lowered, while confirming high accuracy. The adoption of centralized data storage in the future allows more convenience for users. Owing to its speed and convenience, the process can be applied in data collection for practical systems such as surveillance, face attendance with a very large number of people.

Abstract: The invention proposed damper protection for direct drive motor angle limits This mechanism includes main components: Assembly guideway-spring, and Assembly angle limit bar, and Assembly direct-drive motor. The content mentioned in the invention describes the damping spring integrated inside the direct motor to protect the device when operating within the desired stroke limit It can be applied to high-precision devices and motors. The invention's products can be applied in Direct-drive motor mechanisms that limit rotation angle with high-accuracy such as robotic arms, multi-sensor automatic observation devices, or unmanned equipment.

Abstract: The invention provides an inertial sensing device the capability to achieve self-alignment (sensor error compensation), by using dual-rotation modulation technique. The self-alignment process is performed based on fully building the sensor's mathematical model and rotating the inertial sensor blocks in a specific order. The advantages of this technology are fast calibration time, high accuracy, and the ability to separate independent movements on the axes of the inertial sensor. The inertial sensor based on a dual-rotation modulation platform is applied to marine and aeronautical fields.

Abstract: The present invention provides a method of fraud detection in telecommunication including 4 steps: collecting user-profiling data, analyzing encrypted text messages, extracting features, building fraudulent subscribers classification model, developing keyword rule to detect fraudulent subscribers, proposing multiple options to prevent fraudulent subscribers in realtime.

Abstract: A method of queue design for data storage and management applies RAM data synchronization technology on many distributed nodes, both ensures storage performance and solves the problem of data loss in the system operation process; performs business separation and parallelize actions to optimize processing performance; uses simply extracted information instead of accessing the original information helps to speed up the processing ability and promptly detect events that exceed the threshold; allocates a fixed memory for the queue to ensure the safety of the whole system; in addition, provides monitoring and early warning of possible incidents. The method includes: step 1: build a deployment model; step 2: initialize the values when the application first launches; step 3: process write data to the queue; step 4: detect the threshold and process the data in the queue; step 5: remove processed data from the queue; step 6: monitor queue and early warn.

Abstract: A wing deployment mechanism and a design method using a pneumatic cylinder with transmission spring system (assembly) are provided. The deployment mechanism comprises frame, wing, deployment cylinder, gas canister, rotation shaft, bolts, groove, locking pin, dowel pin, flange, first spring, second spring, dowel pin hole, looking pin hole, slider, third spring. The design method includes step 1: determining the problem's specifications; step 2: constructing the equations of motion; step 3: designing a primary scheme for a system of pneumatic cylinder with transmission spring. Step 4: determining the parameters for the system; and step 5: validating the design.

Abstract: The method of synchronizing data frames between 5G baseband processing stations by a global position system (GPS)-integrated local oscillator block control, including the following steps: step 1: synchronize the baseband processor's local oscillator block with the GPS's 1 pps (pulse per second) pulse and generate a 10 ms (millisecond) pulse from the local oscillator; step 2: use the 10 ms synchronous pulse sync monitor block to get the sync offset between this pulse and the GPS 1 pps pulse; step 3: use the control algorithm to reconfigure the local oscillator so that the 10 ms synchronous pulse can follow the 1 pps GPS pulse.

Abstract: The invention proposes the design of a pyrotechnic initiator applied in the aerospace field, including three main components: the housing, the burning bridge and the pyrotechnic dose. The housing has a protective effect and increases the power of the pyrotechnic dose, in which the number of threads and the thread length are calculated to ensure to withstand the fire pressure. The burning bridge generates heat to ignite the ignition dose, the diameter of the bridge is calculated to ensure the resistance of the burning bridge. The pyrotechnic dose consists of 3 ingredient doses, which are the ignition dose, the intermediate dose, and the fire-boosting dose. In which, the mass, composition and density of the doses are calculated to ensure that the required working pressure is created.

Abstract: A method for determining a salient object in an image based on superpixel analysis consists of initializing superpixels using SLIC algorithm and merging of adjacent superpixels that have similar color distribution. Then, calculate the spatial and color distribution correlation between the superpixels after being merged. Combined with the statistics of the occupancy rate, the distance to the original image center, and the global contrast of the superpixels, calculate the saliency evaluation vector for each superpixel. Finally, interpolate the saliency for each pixel in the superpixel.

Abstract: A system and method for live video streaming over tactical wireless networks based on distortion estimation using multilayer perceptron neural network (MLP). The system and method can adaptively adjust the parameters of transport and application layers according to wireless network conditions, based on video distortion estimation using MLP neural network. The system includes a video motion and detail estimation block, a redundancy and video bitrate optimizer, a MLP neural network-based video distortion estimator, and video transport blocks, a packet error rate (PER) and bandwidth measurement block.

Abstract: The disclosure refers to the anti-blur infrared lens for the panoramic camera system, also known as Infrared Search and Track (IRST), using a 1280×1024 resolution sensor with a working F-number of 2. The lens operates in the mid-infrared wavelength range of 3-5 ?m, using a fast steering mirror (FSM) and a pair of lenses with extended polynomial surfaces to prevent image blur during integration time. The optical image captured by the lens always maintains sharpness during the change of rotation angle of the device by changing the angular position of FSM. The lens is capable of observing with wide angle-of-view and large rotation angle compensation ability, ensuring long detection distance.

Abstract: The invention relates to a dual polarized wideband array antenna using orthogonal feeding technique to have a low profile and a cosecant squared beam. The array antenna includes three main parts: the element antennas, the orthogonal feeding structure and the feeding network. The spatially orthogonal feeding structure is a transition between the microstrip lines on element antennas and the striplines on the feeding network. The top layer of the feeding network operates as a ground plane for the array antenna. Due to the disparities between the stripline lengths, the phase parameters of element antennas are optimized to create a cosecant squared radiation pattern.

Abstract: The invention refers to the two-axis direct-drive rotation mechanism for observation device with design drive block inside assembly tilt-axes for a multi-sensor surveillance device used for unmanned vehicles. This is mechanical mechanism performs rotate pan-tilt axis by direct drive motor. This mechanism include of main components: assembly pedestal, assembly pan-axis and assembly tilt-axis. Electronic circuits, encoders, mechanism, motor are optimized arranged and scientific designed the layout space and the weight of the structure. This mechanism can integrate optical sensors such as infrared cameras, high resolution camera, laser rangefinder.

Abstract: Determining a target's range profiles is an important issue for coastal surveillance radars because it can give us the knowledge about the target, for example, target's type, target's structure and its length along radial direction. Some modern radars nowaday are equipped with the feature of target's range profile extraction, but the results are not accurate due to limitations in processing algorithms. The invention “system and method of determining target's range profiles for coastal surveillance radars” solves the above problem in the direction of proposing a system of technical solutions and associated algorithm improvements.

Abstract: A self-balancing Two-Rotation Driving Mechanism (TRDM) uses parallelogram and has low weight, high load, high accuracy, quick response and good adaptation with multi equipment. A longitudinal rotation motor assembly is constrained fully with a base assembly and drives a longitudinal rotation assembly through connecting rod parallelogram. The lateral rotation motor assembly is assembled in the hub of a longitudinal rotation assembly and rotates an equipment clamping assembly in a lateral direction. Generally, the TRDM can drive equipment clamping assembly in two rotations, with longitudinal rotation in the range of ±45° and lateral rotation in range of ±20°. A rotation limitation is reached when limitation shafts touch the end of respective grooves.

Abstract: A broadband dual-polarized antenna integrated high-performance balun. The antenna structure consists of three main parts: radiator, feeding structure and reflector. The radiation element consists of four radiation parts with petal shape, forming two pairs of orthogonal dipole antennas. The feeding structure consists of four circuit boards with separated lines, forming resonant structures corresponding to a balance transformer. The reflector enables to direct the beam, increasing the antenna's orientation.

Abstract: The method for reducing impact of flapping links on performance of network devices is implemented in 3 steps: Step 1: initialize a number of points of the interface to define interface status; Step 2: add a number of points to T and change interface status to isolated; Step 3: the interface comes back to normal state; By all those steps above, the routers can reduce impact of flapping links on route calculation and its performance.