公开(公告)号：US20150117299A1

公开(公告)日：2015-04-30

申请号：US14064195

申请日：2013-10-28

申请人： Beihang University

发明人： Jun ZHANG ,  Qiang GAO ,  Yu HAN

IPC分类号： H04L25/02 ,  H04W52/30 ,  H04B7/155

CPC分类号： H04L25/0256 ,  H04B7/15592 ,  H04L25/0204 ,  H04W52/143 ,  H04W52/30 ,  H04W52/346 ,  H04W52/46

摘要： The present invention discloses a distributed information source estimation method based on cooperative communication, which comprises the following steps: the fusion center selects a relay node with the best channel quality from a plurality of sensor nodes, according to the current channel quality between each sensor node and the fusion center; said fusion center carries out transmission power distribution on each sensor node, according to the observation quality of each sensor node towards an information source and the current channel quality between each sensor node and the fusion center; each sensor node judges whether it is a relay node or not; the sensor node directly transmits the observation information obtained by observing the information source to said fusion center; the sensor node transmits the observation information obtained by observing the information source to said fusion center.

摘要翻译： 本发明公开了一种基于协同通信的分布式信息源估计方法，包括以下步骤：融合中心根据传感器节点间的当前信道质量从多个传感器节点中选择具有最佳信道质量的中继节点 和融合中心; 所述融合中心根据每个传感器节点对信息源的观测质量和每个传感器节点与融合中心之间的当前信道质量，在每个传感器节点上执行传输功率分配; 每个传感器节点判断它是否是中继节点; 传感器节点将通过观察信息源获得的观测信息直接发送到所述融合中心; 传感器节点将通过观察信息源获得的观察信息发送到所述融合中心。

公开(公告)号：US20150097118A1

公开(公告)日：2015-04-09

申请号：US14382333

申请日：2013-03-01

申请人： BEIHANG UNIVERSITY

发明人： Zheng Zheng ,  Xin Zhao ,  Lei Liu ,  Jiansheng Liu

IPC分类号： G01J3/10 ,  G01J3/447 ,  G01J3/42

CPC分类号： G01J11/00 ,  G01J1/10 ,  G01J3/0224 ,  G01J3/0245 ,  G01J3/10 ,  G01J3/108 ,  G01J3/42 ,  G01J3/433 ,  G01J3/447 ,  G02F1/353 ,  G02F1/365 ,  G02F1/37 ,  G02F2203/13 ,  H01S3/0092 ,  H01S3/06791 ,  H01S3/0809 ,  H01S3/1106 ,  H01S3/1112 ,  H01S3/2391

摘要： A method and a system for measuring an optical asynchronous sample signal. The system for measuring an optical asynchronous sampling signal comprises a pulsed optical source capable of emitting two optical pulse sequences with different repetition frequencies, a signal optical path, a reference optical path, and a detection device. Since the optical asynchronous sampling signal can be measured by merely using one pulsed optical source, the complexity and cost of the system are reduced. A multi-frequency optical comb system using the pulsed optical source and a method for implementing the multi-frequency optical comb are further disclosed.

公开(公告)号：US20240315803A1

公开(公告)日：2024-09-26

申请号：US18496589

申请日：2023-10-27

申请人： Beihang University ,  Peking Union Medical College Hospital

发明人： Chong PAN ,  Yue YU ,  Yanpeng LIU ,  Jiangsheng WANG ,  Xinyu HE ,  Jizhi ZHAO

IPC分类号： A61C5/50 ,  A61C5/30

CPC分类号： A61C5/50 ,  A61C5/30

摘要： Disclosed are a root canal fluid filling device and method. The root canal fluid filling device includes a root canal filling device box, including an upper box body and a lower box body which are arranged in upper and lower partitions and detachable; a positive and negative pressure generating apparatus, arranged in the lower box body; an air pressure monitoring apparatus, arranged in the lower box body and connected to the positive and negative pressure generating apparatus; an air pressure recovery apparatus, arranged in the lower box body; an auxiliary positioning apparatus, including an auxiliary positioning crown which is respectively connected to the positive and negative pressure generating apparatus, the air pressure monitoring apparatus and the air pressure recovery apparatus and is to be sleeved outside and cemented to a tooth to be subjected to root canal therapy; a control display apparatus; and a power supply apparatus.

公开(公告)号：US20240306921A1

公开(公告)日：2024-09-19

申请号：US18670798

申请日：2024-05-22

申请人： BEIHANG UNIVERSITY ,  SUZHOU SURGI-MASTER HIGH TECH CO., LTD.

发明人： Shuhua YUE ,  Shijie ZHU ,  Xun CHEN ,  Pu WANG

IPC分类号： A61B5/00 ,  A61B1/07

CPC分类号： A61B5/0075 ,  A61B1/07 ,  A61B5/0066

摘要： The present disclosure provides a multi-modal imaging device based on Raman spectroscopy and optical coherence tomography. The multi-modal imaging device based on Raman spectroscopy and optical coherence tomography includes: a Raman spectroscopic analysis module configured to obtain Raman spectroscopic information of a target object on a first sampling position by using excitation light; an optical coherence tomography module configured to obtain at least one two-dimensional tissue structure image of the target object on a second sampling position by using imaging detection light; and a co-localization module configured to control the first sampling position of the excitation light in the Raman spectroscopic analysis module and/or the second sampling position in the optical coherence tomography module according to a determined concerned area of the target object, so that the first sampling position and the second sampling position are spatially co-localized in the concerned area.

公开(公告)号：US12070614B2

公开(公告)日：2024-08-27

申请号：US18115888

申请日：2023-03-01

申请人： BEIHANG UNIVERSITY

发明人： Jie Tian ,  Jie He ,  Hui Hui ,  Jing Zhong ,  Yu An ,  Zhenchao Tang

IPC分类号： A61N1/40 ,  A61B5/0515 ,  A61N2/02

CPC分类号： A61N1/406 ,  A61B5/0515 ,  A61N2/02

摘要： An apparatus and a method for magnetic particle imaging and thermotherapy fusion based on field-free line inertial scanning comprises a magnetic body group, an induction coil, a living body bed, a control device, a display device, an image processing device and a cooling system. The magnetic body group comprises a long curved magnetic body pair and a cylindrical magnetic body. The control device is used to scan and image the target living body and perform thermotherapy on a preset area.

公开(公告)号：US12061277B1

公开(公告)日：2024-08-13

申请号：US18383524

申请日：2023-10-25

申请人： Beihang University

发明人： Kun Fang ,  Zhipeng Wang ,  Xiaopeng Hou ,  Zhiqiang Dan ,  Jinqi Li

IPC分类号： G01S19/47 ,  G01S5/02 ,  G01S19/49

CPC分类号： G01S19/47 ,  G01S5/0264 ,  G01S5/0244 ,  G01S5/0294 ,  G01S19/49 ,  G01S2205/03

摘要： The present application discloses an airborne positioning method and system for an aviation navigation network, and relates to the technical field of satellite navigation. The airborne positioning method for an aviation navigation network is applied to an omnisource navigation system, and comprises the following steps: acquiring the original observation data of the omnisource navigation system; Filtering the original observation data based on dead reckoning to obtain filtered observation data; Unify that filtered observation data in time and space to obtain observation data to be fused; The adaptive fusion algorithm of omnisource navigation based on variance optimization is adopted to fuse the observation data to be fused to obtain the fused data; the fused data is used to characterize the position of the target aircraft at the current moment. The present application can improve the accuracy of the positioning result.

公开(公告)号：US20240231284A1

公开(公告)日：2024-07-11

申请号：US18537937

申请日：2023-12-13

申请人： Beihang University

发明人： Chuang Shi ,  Fu Zheng

IPC分类号： G04R20/02 ,  G04F5/14

CPC分类号： G04R20/02 ,  G04F5/14

摘要： A high-precision time synchronization (HTS) system and method using virtual atomic clocks (VACs) includes: providing an implementation of VAC generation method: accessing the high-precision time service provided by the WPT system, solving receiver clock offsets and reconstructing reference stations observations; providing a rapid HTS method: using the VAC information to realize rapid HTS by means of pseudorange or carrier phase CV time transfer; obtaining a HTS system using VACs, including a real-time observations receiving and distributing module, a differential corrections receiving and decoding module, a local clock solving module, a GNSS observations reconstruction module, and a VAC data broadcasting module. Aiming at VACs don't have the function of time-keeping, and GNSS is easy to be interrupted by factors such as environmental and network anomalies, and a VAC is unable to continuously provide high-precision time service, combing VACs is proposed to safeguard the continuity and reliability of the time-frequency service system.

公开(公告)号：US20240185595A1

公开(公告)日：2024-06-06

申请号：US18138139

申请日：2023-04-24

申请人： Beihang University

发明人： Zhipeng WANG ,  Hongxia WANG ,  Kun FANG ,  Jiahao XU ,  Zhiqiang DAN

IPC分类号： G06V10/98 ,  G06V10/75

CPC分类号： G06V10/993 ,  G06V10/757

摘要： A method for evaluating quality of a point cloud map based on matching includes the following steps: S1, acquiring the to-be-evaluated point cloud map as a point cloud matching algorithm input; S2, acquiring a point cloud sample set for matching; S3, matching by using a point cloud matching algorithm, and iterating to obtain estimated three-dimensional coordinate system transforms; S4, calculating point cloud matching errors; and S5, taking an obtained quality evaluation score of the to-be-evaluated point cloud map as a point cloud matching algorithm output. The method for evaluating the quality of the point cloud map based on matching can evaluate the quality of the point cloud map in a full-automatic manner without the dependence on truth values and artificial calibration, so as to improve the quality evaluation efficiency of the point cloud map.

公开(公告)号：US11978350B2

公开(公告)日：2024-05-07

申请号：US17677296

申请日：2022-02-22

申请人： BEIHANG UNIVERSITY

发明人： Yanbo Zhu ,  Xiaofeng Shi ,  Zhipeng Wang

IPC分类号： G01S19/02 ,  G01S19/15 ,  G01S19/23 ,  G01S19/37 ,  G08G5/00

CPC分类号： G08G5/0069 ,  G01S19/02 ,  G01S19/15 ,  G01S19/23 ,  G01S19/37 ,  G08G5/0013

摘要： The present disclosure relates to a technical field for airborne navigation and discloses a data acquisition system and method for airborne navigation devices based on unmanned aerial vehicle. The system includes an unmanned aerial vehicle flight control system, a navigation devices test antenna array, a multi-channel signal processing module, a signal acquisition module, an ADS-B transmitting module, a GNSS receiver, a UHF data link receiver, a power module and a ground station. The unmanned aerial vehicle is equipped with corresponding modules to receive signals from ground navigation devices, perform corresponding processing and storage, and transmit data to the ground, at the same time, receive control instructions sent by the ground to complete corresponding monitoring, analysis and inspection.

公开(公告)号：US11974050B2

公开(公告)日：2024-04-30

申请号：US17865986

申请日：2022-07-15

申请人： Beihang University

发明人： Jia Li ,  Daxin Gu ,  Yunshan Qi ,  Qinping Zhao

IPC分类号： H04N5/232 ,  H04N5/355 ,  H04N23/80 ,  H04N25/57

CPC分类号： H04N23/80 ,  H04N25/57

摘要： The embodiments of the present disclosure disclose data simulation method and device for event camera. A specific embodiment of the method includes: decoding the video to be processed to obtain a video frame sequence; inputting a target video frame to a fully convolutional network UNet to obtain event camera contrast threshold distribution information; sampling each pixel in the target video frame to obtain an event camera contrast threshold set; performing processing on the event camera contrast threshold set and the video frame sequence, to obtain the simulated event camera data; performing generative adversarial learning on the simulated event camera data and event camera shooting data, to obtain updated event camera contrast threshold distribution information; generating simulated event camera data. The present disclosure is a computer vision system that can be widely applied to such fields as national defense and military, film and television production, public security, and etc.