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1.发明公开公开(公告)号：US20240288569A1
公开(公告)日：2024-08-29
申请号：US18440518
申请日：2024-02-13
Inventor： Song Pan , Xinfei Lu , Jianjun Zhang , Dan Xue , Songhua Shi
Abstract: A method of target feature extraction and multi-target tracking based on 4D millimeter wave radar includes acquiring the point cloud data output from the radar and preprocess the point cloud data to eliminate the outlier value; processing the points acquired after preprocessing by Density-Based Spatial Clustering of Applications with Noise (DBSCAN) clustering; processing each of the acquired clusters for target feature extraction; predicting the existing trajectory is predicted, and the prediction results are globally correlated with the clustering results; based on the correlation clustering results, the corresponding multi-target tracking motion state processing is executed to obtain the transverse pendulum angular velocity; and based on the target motion state, the target size information as well as the heading angle information are updated.
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公开(公告)号：US12066526B2
公开(公告)日：2024-08-20
申请号：US17557831
申请日：2021-12-21
Inventor： Hyung Ju Kim , Sung Jin Yoo , Byung Jang Jeong , Woo Jin Byun , In Kui Cho
CPC classification number: G01S13/882 , G01S7/418 , G01S13/003 , G01S13/424
Abstract: A method for calculating an altitude of a target through an apparatus for calculating an altitude of the target, which comprises a plurality of MIMO radar virtual antennas, may comprise: receiving electromagnetic waves reflected from the target through a pair of virtual antennas classified into an upper antenna and a lower antenna and alternately arranged in two columns linearly; obtaining range information and phase information of the target from the pair of virtual antennas by analyzing the electromagnetic waves; and calculating altitude information of the target from position information of the pair of virtual antennas, and the range information and the phase information.
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公开(公告)号：US12050262B2
公开(公告)日：2024-07-30
申请号：US17695120
申请日：2022-03-15
Applicant: R2 Space, LLC
Inventor： Jeffrey Scott Pennings
CPC classification number: G01S13/9094 , G01S7/418 , G01S13/9027
Abstract: Various embodiments of the present technology generally relate to systems, methods, and computer-readable media for simulating synthetic aperture radar (SAR) images to be captured by a radar-based imaging system. SAR technology can be used to capture large areas on Earth, from a satellite in space for example, over a single pass. A further pass over the target area can help identify changes in the landscape, scenery, and/or infrastructure providing insight on change detection, temporal analysis, or other measures; however, repeat passes over the target area may have been made from differing angles resulting in artifacts in one or both of the processed images from the two passes. In various embodiments, information about the topology of the target area, and information about the SAR platform's flight path are used to simulate the slant range distortion effects that are to be expected in the SAR image of for that pass.
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公开(公告)号：US09389306B2
公开(公告)日：2016-07-12
申请号：US13944287
申请日：2013-07-17
Applicant: Sony Corporation
Inventor： Juan Nogueira-Nine
Abstract: A radar apparatus for obtaining a higher range resolution than conventional radar apparatus without increasing the bandwidth comprises a transmitter antenna that transmits a frequency modulated transmit signal having a transmit bandwidth and a receiver antenna that receives a receive signal reflected from said scene in response to the transmission of said transmit signal. A mixer mixes said receive signal with said transmit signal to obtain a mixed receive signal, a sampling unit samples said mixed receive signal to obtain receive signal samples from a period of said receive signal, and a processor processes said receive signal samples by defining a measurement matrix and determines the positions of one or more targets of the scene by applying compressive sensing using said measurement matrix and said receive signal samples. A post-processor groups together receive signal samples having a depth within the same depth bin and belonging to the same target.
Abstract translation: 用于在不增加带宽的情况下获得比常规雷达装置更高的分辨率的雷达装置包括发送具有发射带宽的调频发射信号的发射机天线和接收从所述场景反射的接收信号的接收机天线 的所述发送信号。 混合器将所述接收信号与所述发送信号混合以获得混合接收信号，采样单元对所述混合接收信号进行采样以从所述接收信号的周期获得接收信号样本，并且处理器通过定义测量结果处理所述接收信号样本 矩阵，并且通过使用所述测量矩阵和所述接收信号样本应用压缩感测来确定场景的一个或多个目标的位置。 后处理器组一起接收具有在相同深度槽内并且属于相同目标的深度的信号样本。
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公开(公告)号：US20140022113A1
公开(公告)日：2014-01-23
申请号：US13944287
申请日：2013-07-17
Applicant: Sony Corporation
Inventor： Juan NOGUEIRA-NINE
IPC: G01S7/41
Abstract: A radar apparatus for obtaining a higher range resolution than conventional radar apparatus without increasing the bandwidth comprises a transmitter antenna that transmits a frequency modulated transmit signal having a transmit bandwidth and a receiver antenna that receives a receive signal reflected from said scene in response to the transmission of said transmit signal. A mixer mixes said receive signal with said transmit signal to obtain a mixed receive signal, a sampling unit samples said mixed receive signal to obtain receive signal samples from a period of said receive signal, and a processor processes said receive signal samples by defining a measurement matrix and determines the positions of one or more targets of the scene by applying compressive sensing using said measurement matrix and said receive signal samples. A post-processor groups together receive signal samples having a depth within the same depth bin and belonging to the same target.
Abstract translation: 用于在不增加带宽的情况下获得比常规雷达装置更高的分辨率的雷达装置包括发送具有发射带宽的调频发射信号的发射机天线和接收从所述场景反射的接收信号的接收天线 的所述发送信号。 混合器将所述接收信号与所述发送信号混合以获得混合接收信号，采样单元对所述混合接收信号进行采样以从所述接收信号的周期获得接收信号样本，并且处理器通过定义测量结果处理所述接收信号样本 矩阵，并且通过使用所述测量矩阵和所述接收信号样本应用压缩感测来确定场景的一个或多个目标的位置。 后处理器组一起接收具有在相同深度槽内并且属于相同目标的深度的信号样本。
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Patent Agency Ranking
6.发明授权公开(公告)号：US12085639B2
公开(公告)日：2024-09-10
申请号：US17631454
申请日：2020-10-13
Applicant: CHANG'AN UNIVERSITY
CPC classification number: G01S13/885 , G01S7/417 , G01S7/418 , G01S13/89
Abstract: A method for adaptively selecting a ground penetrating radar (GPR) image for detecting a moisture damage is provided. The method adaptively selects the GPR image according to a contrast of the GPR image. The method includes the following steps: S1, reading pre-processed GPR data; S2, adjusting a resolution of a picture; S3, inputting a data set into a recognition model; S4, outputting a moisture damage result; S5, judging whether there is a detection target or not by using an initial random image data set; and S6, generating the GPR image randomly incrementally and selecting the GPR image with a proper contrast. A proper B-scan image is found effectively, quickly and automatically by combining a recognition algorithm and a deep learning model or an image classification model to achieve an automatic recognition and detection based on the GPR image and improving a recognition precision as well.
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公开(公告)号：US11885870B2
公开(公告)日：2024-01-30
申请号：US17260078
申请日：2019-07-30
Applicant: University of Kansas , The United States of America as represented by the Secretary of the Air Force
Inventor： Lumumba Harnett , Justin G. Metcalf , Shannon D. Blunt
IPC: G01S13/524 , G01S7/288 , G01S7/292 , G01S7/41
CPC classification number: G01S13/5242 , G01S7/288 , G01S7/2923 , G01S7/414 , G01S7/415 , G01S7/418
Abstract: The present application discloses a new form of μ-STAP, referred to herein as post μ-STAP or Pμ-STAP, which overcomes the drawbacks associated with existing μ-STAP techniques. The Pμ-STAP techniques described herein facilitate the generation of additional training data and homogenization after pulse compression. For example, Pμ-STAP techniques may apply a plurality of homogenization filters to a pulse compressed datacube generated from an input radar waveform, which produces a plurality of new pulse compressed datacubes with improved characteristics. Unlike existing μ-STAP techniques described above, which require pre-pulse compressed data to operate, the Pμ-STAP techniques disclosed in the present application are designed to utilize pulse compressed data, and therefore may be readily applied to legacy radar systems.
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公开(公告)号：US20160327668A1
公开(公告)日：2016-11-10
申请号：US15111724
申请日：2015-01-13
Applicant: WESTERNGECO LLC
Inventor： Ivan Pires De Vasconcelos
CPC classification number: G01V1/34 , A61B8/0866 , A61B8/13 , A61B8/52 , A61B8/5207 , G01N29/0654 , G01N29/4472 , G01N29/46 , G01N29/52 , G01S7/418 , G01S13/885 , G01S13/89 , G01S15/006 , G01S15/8977 , G01S15/8993 , G01V1/38 , G01V1/3843
Abstract: Methods and apparatuses for processing measurements to create an interferometry-based metric to measure inaccuracy of a model. The metric is used as a cost function for nonlinear inversions or simplified linear inversions or imaging.
Abstract translation: 用于处理测量以创建基于干涉测量的度量以测量模型的不准确性的方法和装置。 该度量用作非线性反演或简化线性倒置或成像的成本函数。
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9.发明申请METHOD FOR LOCATING A TARGET AND MULTISTATIC RADAR SYSTEM FOR IMPLEMENTING SUCH A METHOD 审中-公开用于定位实现这种方法的目标和多平台雷达系统的方法公开(公告)号：US20160084950A1
公开(公告)日：2016-03-24
申请号：US14891657
申请日：2014-05-22
Applicant: THALES
Inventor： Daniel MULLER
CPC classification number: G01S13/003 , G01S7/4021 , G01S7/418 , G01S13/42 , G01S13/58 , G01S13/872
Abstract: A method for locating a target comprises: a) receiving, by means of N≧1 receivers, opportunity radioelectric signals transmitted by M≧1 transmitters and reflected by the target, with N·M≧3, or at least one transmitter being situated out of sight of at least one receiver; b) receiving, by means of a data transmission link, one or more reference signals, representative of the radioelectric signals transmitted by each transmitter situated out of sight of at least one receiver; and c) determining the position of the target on the basis of the radioelectric signals and of the reference signal or of the reference signals. An application of the method to the primary monitoring of air traffic, a multistatic radar system for the implementation of the method, and a system for monitoring air traffic comprising a multistatic radar system are provided.
Abstract translation: 一种用于定位目标的方法包括：a）通过N≥1个接收机接收由M≥1个发射机发送并由目标反射的机会放大电信号，N·M≥3，或至少一个发射机位于 至少一个接收器的视线; b）通过数据传输链路接收表示由位于至少一个接收机的视线以外的每个发射机发送的放射线电信号的一个或多个参考信号; 以及c）基于所述放射电信号和所述参考信号或所述参考信号来确定所述目标的位置。 提供了该方法对空中交通的主要监控的应用，用于实施该方法的多基地雷达系统以及包括多中心雷达系统的用于监测空中交通的系统。
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公开(公告)号：US07567205B1
公开(公告)日：2009-07-28
申请号：US12212786
申请日：2008-09-18
Applicant: Chul J. Lee
Inventor： Chul J. Lee
Abstract: In one aspect, a method to generate radar signatures for multiple objects in motion, includes performing a shooting and bouncing (SBR) technique to solve for physical optics and multi-bounce characteristics associated with the objects. Performing the SBR technique includes performing dynamic ray tracing to form an image of an object having surfaces and edges. Performing the dynamic ray tracing includes transforming the object in a common coordinate frame of reference to a centered-body axis frame of reference.
Abstract translation: 在一个方面，一种用于为运动中的多个物体生成雷达签名的方法包括执行拍摄和弹跳（SBR）技术以解决与物体相关联的物理光学和多反弹特性。 执行SBR技术包括执行动态光线跟踪以形成具有表面和边缘的对象的图像。 执行动态光线跟踪包括将公共坐标参考系中的对象变换为中心体轴参照系。
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