Abstract: A method for filtering and removing false targets caused by sidelobes in pulse compression calculates the target filtering threshold to differentiate and eliminate false targets caused by sidelobes in pulse compression. It is applicable in radar signal processing systems using the polyphase P3-coded waveform (the P3 code) for both transmitted and received signals. This method leverages the characteristics of the P3 code's pulse compression output. Specifically, the sidelobes appear symmetrically on both sides of the main lobe, and the distance between the main lobe and the sidelobes is approximately equivalent to the pulse width of the transmitted signal, extending to both sides of the main lobe. For each pulse width of the signal, this distance is fixed and can be predetermined. Experimental results on radar systems have demonstrated that the proposed method effectively filters out all false targets caused by sidelobes in pulse compression.

Abstract: The method of controlling service load selectively by session in the telecommunications charging system is designed to ensure stable system operation even when the load exceeds the system's capacity. The method consists of three steps: Step 1: the charging system determines the overload status of the system; Step 2: The charging system selectively bypass or accept request according to conditions and has a status memory; Step 3: The charging system analyzes and reprocesses the saved charging requests.

Abstract: An algorithm for selecting a new suitable AP for STAs in a mesh network and a method for exchanging data between APs built according to the IEEE 1905.1 standard. The active search helps reduce the latency when STAs move in the coverage area of the mesh network, ensuring service performance and maintaining stable connections. The vender message are specifically defined to ensure that the roaming process is not interrupted and that the service remains stable during the transition.

Abstract: The invention relates to a method of calculating gating scores in the pulse-Doppler radar using a combination of position, power, size of detection and ambiguous Doppler measurement data to effectively overcome the phenomenon of wrongly assigning detections to the target trajectory and creating false targets in noise regions. The method intelligently merges position, power, detection size and ambiguous Doppler measurement data information of the detections in the algorithm of calculating gating score to solve the problem of selection and disputation detections. The method is carried out through two steps, step 1: determine statistical quantities from the standard data set; step 2: gating selection algorithm.

Abstract: System for adaptive routing in time division multiple access-based wideband mobile adhoc network employs an enhanced OLSR-based routing protocol designed for TDMA-based mobile adhoc network to spread the link quality information and calculates adaptive routing paths based on the link quality. The system employs a signal-to-noise ratio calculation, demodulation and decoding block, link quality estimator, FIFO, link quality broadcast, network layer link state broadcast, link state table, adaptive routing, path calculation block and routing table blocks to achieve the desired results.

Abstract: The invention relates to a two-dimensional (2D) virtual clothing fitting system using machine learning technology and a deterministic classification algorithm. The system allows the construction of a two-dimensional (2D) digital interactive image between a cloth and the user's body instead of using a graphic engineer to simulate it. Machine learning models of image processing combined with a deterministic classification algorithm reproduce the user's image combined with the garment image and transform the cloth image according to the user's size.

Abstract: A wide-stopband high-frequency band-pass filter using L-shaped slotted microstrip resonators, where the filter's nearest spurious frequency is approximately 3.5 times the center frequency f0. The filter consists of the following components: dielectric substrate, copper layer, L-shaped slotted microstrip resonators, 50-Ohm impedance microstrip lines, and high-frequency connectors. The microstrip filter is implemented on a two-layer printed circuit board, designed by resonantly coupling the L-shaped slotted microstrip lines. It features a compact size and a wide stopband using a completely new resonant pattern, the L-shaped slotted microstrip line, which creates a filter with a wide stopband of approximately 2.5 f0. This design is significantly smaller than conventional filters at the same frequency that have a narrower stopband. The input and output high-frequency connectors are directly connected to the resonator through inductive or capacitive coupling via the 50-Ohm impedance line.

Abstract: The invention proposes the method of shoplifting detection from surveillance camera using artificial intelligence technology. This method consists of the following steps: (1) data preprocessing to create short videos from the input video stream, and feed into the deep learning model in step 2; (2) person feature extraction and shoplifting behavior probability calculation using a hybid deep learning model which combines a three-dimensional convolutional neural network (3D-CNN) and a two-dimensional convolutional neural network (2D-CNN) together to learn the spatial-temporal features and the positions of people in the keyframe of processed videos in step 1; (3) post-processing and warning the shoplifting behavior if it occurs.

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 proposes a method and system for automatically identifying and controlling a robot to enter the undercarriage of roll carts. Specifically, the method and system proposed in the invention belong to the field of autonomous mobile robots (AMRs) applied in the transportation of goods in warehouses. The invention relates to the field of robot vision and automatic control.

Abstract: In order to avoid various jamming attacks from intelligent jammers in modern complex wireless environments, a system and method is presented for a user radio to generate and implement an adaptive anti-jamming communication strategy. The said adaptive anti-jamming communication strategy is obtained via the training process for a specific neural network using Deep Double-Q Reinforcement learning algorithm in the strategy generation phase. The objective of this process is to discover a strategy to select the optimal radio action including transmission channel and transmission power for the user radio, which is changed adaptively to different jamming patterns to maximize the successful transmission rate (“jamming-free”) while retaining the power consumption of user radio as low as possible.

Abstract: The mechanism in the invention provides a solution for automated, remote regulating high pressure air in the industrial air tube system. With double layer electromagnetic valves, the mechanism assure the comfortable and safe working platform for humans and equipment. The mechanism comprises: mechanical valve, 20 L pneumatic tank, pressure gauge, sealed metal box, static disc, electromagnetic relay with movable stem, capacitor, low pressure air tube, high pressure air tube, electrical wire, electromagnetic relay.

Abstract: An automatic umbilical connector separating mechanism is separable in the same direction as the motion of a flying object. After the two connectors are connected, they are securely held in place by trigger mechanisms to prevent self-loosening and signal loss. When the flying object is launched and slides on the launch rail, the connector frame moves forward, releasing the trigger mechanisms. With tension from the chains and the force from the spring, the male connector frame pulls the male connector in the opposite direction. As a result, the automatic umbilical connector separating mechanism moves in the same direction as the flying object on the pins and guide holes of the connector frames. After the guide pins reach the end of their travel, the spring pulls the male connector frame up the launch pad, while the spring-loaded hinge folds the female connector frame into the flying object body.

Abstract: A testing system for the accumulation of airborne collision warning Radio Frequency Airborne Accumulative Pulse Radar Warning SystemF pulse systems in space, to test the Radio Frequency Airborne Accumulative Pulse Radar Warning System collision warning pulse accumulation device. The system is utilized in laboratory settings or to assess the functionalities, parameters, and readiness of the Radio Frequency Airborne Accumulative Pulse Radar Warning System equivalent to its real-world operation. It also allows for monitoring and evaluating the operation of the entire RF system through signal communication transmitted from the Radio Frequency Airborne Accumulative Pulse Radar Warning System to the simulation system.

Abstract: A rim transmission mechanism to create a rotating motion in two axes perpendicular to devices for the purpose of detecting and monitoring the target. This is the mechanical mechanism that carries out the rotating transmission of two horizontal and vertical directions (azimuth) (azimuth). Half of half-spring gear. The structure includes the main components: horizontal channel clusters, teeth clusters and vertical channels. Location sensors, angular velocity sensors are arranged, designed scientifically, optimizing the layout space and mass of the structure.

Abstract: A Pulse Signal Accumulation System for determining target proximity in supersonic and ultrasonic flying devices comprises the following components: digital processing block, high-frequency transceiver block, power supply block, antenna block, and communication block. The system is designed to accurately determine and provide alerts for the presence of targets within the influence zone of unmanned aerial vehicles (UAVs) operating at supersonic or ultrasonic speeds, enabling appropriate actions to be taken by the UAVs. Additionally, the system is equipped with self-checking and monitoring capabilities for the individual components within the overall system.

Abstract: The weight and center of gravity measurement equipment for aerial vehicles, comprising: a base frame, an equipment frame positioned above the base frame, first and second supporting components opposite each other at both equipment frame ends so that the line (A-A) connecting the centers of first and second clamp rings of these two supporting components is parallel to a horizontal plane; the first clamp ring is driven to rotate at predetermined angles ? around the line (A-A) by a servo motor through a gearbox; three load sensors arranged in a triangular pattern between the base and equipment frame; a processor receives signals from these load sensors, calculate the vehicle weight and center of gravity based on load values of the vehicle determined by the load sensors at the initial and at each positions where the vehicle rotated at the predetermined angle ?, and outputs the results to a display screen.

Abstract: Radar signal detection and parameter estimation is central in passive surveillance systems, providing inputs for many information processing modules in order to detect, localize, indentify and intercept hostile targets. The proposed method for detecting radar signals and estimating their intra-pulse parameters in time-varying noisy environments consists of several stages: magnitude-squared envelopes calculation, adaptive noise floor estimation, detection statistics calculation, rising edge detection, time of arrival estimation, falling edge detection, time of departure estimation, pulse width estimation, amplitude estimation and center frequency and bandwidth estimation. Estimated intra-pulse parameters are wrapped into pulse descriptor words (PDWs) for information processing tasks, where each PDW consists of time of arrival, time of departure, pulse width, pulse amplitude, center frequency, signal bandwidth, noise floor level and additional useful information.

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 present invention provides a pyrotechnic valve that can be recovered for reuse, which includes a ignitation assembly that is mounted to a stop ring assembly and a body assembly. The body assembly contains a piston assembly that plays the role of moving to cut off the interior tubing passageways of the elbow block when the ignition assembly works. The technical solution described in this invention provides a reliable and stable pyrotechnic valve design, providing a valve recovery solution that helps reduce the cost of testing.