Patents by Inventor Yanbo Zhu

Yanbo Zhu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10613232
    Abstract: The present invention provides a ground-based augmentation system capable of predicting a tropospheric refractive index with high precision. The system includes a ground base station and an airborne receiver. The ground base station includes a ground acquisition device, a processor, and a transmitter. The ground acquisition device is configured to acquire meteorological parameters of a plurality of years, and use the acquired meteorological parameters as historical data. The processor is configured to call the historical data and establish a back propagation (BP) neural network to predict a refractive index. The transmitter is configured to send the refractive index predicted by the processor to the airborne receiver. With the present invention, the tropospheric refractive index is predicted for different weather conditions, thus improving the precision of tropospheric refractive index prediction.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: April 7, 2020
    Assignee: BEIHANG UNIVERSITY
    Inventors: Zhipeng Wang, Yanbo Zhu, Yuanyuan Zhuang
  • Publication number: 20200031367
    Abstract: The present invention provides a BeiDou-based grid augmentation autonomous driving multi-level warning system comprising a Beidou Satellite Ground-based Augmentation system, user terminals and a Vehicles internet system, wherein the Beidou Satellite Ground-based Augmentation system comprises Beidou grid reference stations, a data processing system and a data broadcast system; the user terminal comprises an in-vehicle receiver and a calculating chips. The present invention can reduce the occurrence of traffic accidents and reduce the loss of life and property.
    Type: Application
    Filed: August 8, 2018
    Publication date: January 30, 2020
    Inventors: Zhipeng WANG, Yanbo ZHU, Yuan LIU, Jingtian DU
  • Publication number: 20200027950
    Abstract: A semiconductor device including a substrate, a first source/drain layer, a channel layer and a second source/drain layer stacked on the substrate in sequence, and a gate stack surrounding a periphery of the channel layer. The channel layer includes a semiconductor material causing an increased ON current and/or a reduced OFF current as compared to Si.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 23, 2020
    Inventors: Huilong ZHU, Guilei WANG, Henry H. RADAMSON, Yanbo ZHANG, Zhengyong ZHU
  • Patent number: 10473791
    Abstract: The present invention provides a ground-based augmentation system (GBAS) integrity performance evaluation method based on a pseudorange error distribution model, including: an airborne receiver terminal performing GBAS integrity performance evaluation by acquiring pseudorange error sample data, including the following method steps: a) grouping the pseudorange error sample data; b) building a distribution model having a Gaussian kernel and quadratic Gaussian polynomial tails for each group of pseudorange error samples; c) calculating a weighted sum of the distribution model of each group of pseudorange errors, to obtain an overall pseudorange error distribution model; d) projecting the pseudorange errors to position domain errors; e) calculating a probability that a position domain error is greater than an alarm limit, to obtain an integrity risk probability value; and f) evaluating GBAS integrity performance.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: November 12, 2019
    Assignee: BEIHANG UNIVERSITY
    Inventors: Zhipeng Wang, Yanbo Zhu, Ludan Song
  • Patent number: 10466362
    Abstract: The present disclosure provides an integrated navigation integrity monitoring system for unmanned aerial vehicles, comprising: an inertial measurement unit for providing a processor with zero offset values of different levels of inertial measurement units; a receiver for receiving signals from global satellite navigation and providing the processor with an integrity risk of a global satellite navigation system; and the processor for calculating a horizontal protection level of integrated navigation and a vertical protection level of integrated navigation, setting a horizontal alert limit and a vertical alert limit, comparing the horizontal protection level and the vertical protection level obtained by calculation with the corresponding horizontal alert limit and vertical alert limit respectively, and monitoring the integrity of the unmanned aerial vehicle. An inertial navigation system can be achieved without hardware redundancy, and the cost of integrated navigation integrity monitoring can be reduced.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: November 5, 2019
    Assignee: BEIHANG UNIVERSITY
    Inventors: Zhipeng Wang, Yanbo Zhu, Wei Liu
  • Patent number: 10436912
    Abstract: The present disclosure provides a method for ARAIM fault detection based on extraction of characteristic value of pseudo-range measurement, comprising: calculating a sum of integrity risks of each of fault modes and a maximum value of the integrity risks of each of the fault modes, calculating a quantity of the fault modes by using a ratio of the sum of integrity risks of each of fault modes to an integrity risk of a largest fault, and using a sample quantity of corresponding pseudo-range measurement values as an effective sample quantity; using a ratio of a time duration T to the effective sample quantity as an effective sampling duration; sampling samples of pseudo-range measurement values that are gathered by a receiver within the effective sampling duration, to obtain an effective pseudo-range measurement set; and by using the effective pseudo-range measurement set, calculating a test statistic, and performing integrity fault detection.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: October 8, 2019
    Assignee: BEIHANG UNIVERSITY
    Inventors: Zhipeng Wang, Yanbo Zhu, Zhen Gao, Jisi Fang, Jingtian Du
  • Publication number: 20190304976
    Abstract: A semiconductor arrangement includes: a substrate; fins formed on the substrate and extending in a first direction; gate stacks formed on the substrate and each extending in a second direction crossing the first direction to intersect at least one of the fins, and dummy gates composed of a dielectric and extending in the second direction; spacers formed on sidewalls of the gate stacks and the dummy gates; and dielectric disposed between first and second ones of the gate stacks in the second direction to electrically isolate the first and second gate stacks. The dielectric is disposed in a space surrounded by respective spacers of the first and second gate stacks which extend integrally. At least a portion of an interval between the first and second gate stacks in the second direction is less than a line interval achievable by lithography in a process of manufacturing the semiconductor arrangement.
    Type: Application
    Filed: December 21, 2016
    Publication date: October 3, 2019
    Inventors: Huilong ZHU, Yanbo ZHANG, Huicai ZHONG
  • Publication number: 20190189523
    Abstract: A semiconductor arrangement includes: a substrate; a plurality of fins formed on the substrate and extending in a first direction; a plurality of gate stacks formed on the substrate and extending in a second direction crossing the first direction and dummy gates composed of dielectric and extending in the second direction, wherein each of the gate stacks intersects at least one of the fins; and spacers formed on sidewalls of the gate stacks and sidewalls of the dummy gates, wherein spacers of at least a first one and a second one among the gate stacks and the dummy gates which are aligned in the second direction extend integrally, and at least some of the fins have ends abutting the dummy gates and substantially aligned with inner walls of corresponding ones of the spacers.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 20, 2019
    Inventors: Huilong ZHU, Huicai ZHONG, Yanbo ZHANG
  • Publication number: 20190166863
    Abstract: An integrated grain drying/storage/regulating bin with a built-in bellows and an externally disposed compartment comprises an integrated bin body, a grain distributing device, an external compartment outside the integrated bin body, an internal bellows inside the integrated bin body, a heating device, a refrigerating device, a humidifying device, an air flow distributing device, a centrifugal fan, and an air flow control valve. The merits of the present invention are: (1) being able to prevent the occurrence of moisture condensation; (2) facilitating production cost reductions; (3) uniformly heating and drying the grains in the bin; (4) being capable of preventing the filter for the grain layers in the bin from blockage or short circuit caused by spontaneous grain grading; (5) being able to implement low temperature or quasi-low temperature storage; and (6) being capable of enhancing grain toughness, lowering breakage rate, and increasing production yield and product quality.
    Type: Application
    Filed: January 7, 2019
    Publication date: June 6, 2019
    Inventors: YANBO MA, JIANXIONG FENG, JINYING ZHOU, JIALIN HE, XUEJING ZHU, GUIPENG CHEN, WENHUA XIONG
  • Publication number: 20190137178
    Abstract: The present application discloses a negative-pressure continuous grain dryer with a built-in heating device, wherein the negative-pressure continuous grain dryer comprises a dryer bin, a heating device, and a centrifugal fan. Several levels of the heating devices are disposed from top to bottom in the dryer bin. A grain mixing device is provided below the heating device at each level. Outside the bin, an auxiliary heating device and a natural air inlet are provided in correspondence with the heating device at each level. The auxiliary heating device and the natural air inlet communicate with the grains and the respective heating device in the dryer bin through a perforated baffle plate. The centrifugal fan communicates with each of moisture exhaust vents at each level through an air duct.
    Type: Application
    Filed: January 7, 2019
    Publication date: May 9, 2019
    Inventors: YANBO MA, JINYING ZHOU, JIANXIONG FENG, XUEJING ZHU, JIALIN HE, GUIPENG CHEN, WENHUA XIONG
  • Patent number: 10282673
    Abstract: A correlation processing method based on observation data from the Deidou satellite includes steps of: a) collecting observation data from the BeiDou Navigation Satellite System; b) capturing data samples according to the observation data, and determining a membership degree of each data sample, and the data samples are classified; c) constructing a target classification function, and selecting the data samples to remove the unavailable data samples; and testing stationarity of each time series; d) building an observation model by using data samples having stationarity in step c), and determining correctness of the observation model and optimizing the observation model if the observation model is not correct; and e) searching a correct observation model obtained in step d) for correlation data, and performing correlation analysis of the observation data. The method of the present invention improved the quality of observation data can be effectively improved.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: May 7, 2019
    Assignee: BEIHANG UNIVERSITY
    Inventors: Zhipeng Wang, Yanbo Zhu, Sikun Wang
  • Publication number: 20190080261
    Abstract: A correlation processing method based on observation data from the Deidou satellite includes steps of: a) collecting observation data from the BeiDou Navigation Satellite System; b) capturing data samples according to the observation data, and determining a membership degree of each data sample, and the data samples are classified; c) constructing a target classification function, and selecting the data samples to remove the unavailable data samples; and testing stationarity of each time series; d) building an observation model by using data samples having stationarity in step c), and determining correctness of the observation model and optimizing the observation model if the observation model is not correct; and e) searching a correct observation model obtained in step d) for correlation data, and performing correlation analysis of the observation data. The method of the present invention improved the quality of observation data can be effectively improved.
    Type: Application
    Filed: October 19, 2017
    Publication date: March 14, 2019
    Inventors: Zhipeng WANG, Yanbo ZHU, Sikun WANG
  • Patent number: 10215863
    Abstract: A Beidou ground-based augmentation system integrity risk monitoring system includes a ground side and an on-board side.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: February 26, 2019
    Assignee: BEIHANG UNIVERSITY
    Inventors: Zhipeng Wang, Yanbo Zhu, Yu Yin, Yuan Liu
  • Patent number: 10197678
    Abstract: An H-ARAIM system of optimizing a horizontal protection level includes constellations, a ground reference station and an aircraft, the ground reference station is used for receiving the satellite coordinate data of the constellations, and processing the received satellite coordinate data into an input data for the calculation of the aircraft horizontal protection level. The aircraft is built-in with a receiver and a data processor, the receiver is used for receiving the input data sent by the ground reference station, and transmitting the input data to the data processor for the data processing as follows: when a difference between a positioning solution of a full visible satellite and a positioning solution of a fault subset is within a threshold of a fault subset monitor system statistical magnitude, the receiver begins to calculate the protection level, which is calculated for protecting the iterative update.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: February 5, 2019
    Assignee: BEIHANG UNIVERSITY
    Inventors: Zhipeng Wang, Yanbo Zhu, Jingtian Du, Yuan Liu
  • Patent number: 9958551
    Abstract: A method for evaluating the availability of ARAIM system is provided. A satellite position coordinate and clock offset of each satellite at a current time point and several time points before the current time point are received. Empirical mode decomposition is performed on the position coordinate and the clock offset respectively, to obtain a position coordinate mode component and a clock offset mode component of each satellite at each time point. A position coordinate mode component and a clock offset mode component of each satellite at a time point next to the current time point are obtained respectively. According to the position coordinate mode component and the clock offset mode component of each satellite at the time point next to the current time point, a position coordinate mode component and a clock offset mode component of each satellite at a next time point is obtained, thereby obtaining an evaluation result.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: May 1, 2018
    Assignee: BEIHANG UNIVERSITY
    Inventors: Zhipeng Wang, Yanbo Zhu, Wei Shao, Qiang Li