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1. 发明授权

US11722840B2 Angle of arrival (AOA) positioning method and system for positional finding and tracking objects using reduced attenuation RF technology 有权
公开(公告)号：US11722840B2
公开(公告)日：2023-08-08
申请号：US17342398
申请日：2021-06-08
申请人： Qualcomm Technologies, Inc.
发明人： Truman Prevatt , Michael John Buynak
IPC分类号： H04W24/00 , H01Q1/24 , H04L5/00 , G01S13/87 , G01S13/76 , G01S13/24 , H01Q21/28 , G01S13/46 , H04W4/02 , G01S5/02 , G01S13/22 , G01S5/14 , G01S3/74 , G01S5/10
CPC分类号： H04W4/023 , G01S3/74 , G01S5/0215 , G01S5/0218 , G01S5/0252 , G01S5/0258 , G01S5/0263 , G01S5/0273 , G01S5/10 , G01S5/14 , G01S13/222 , G01S13/24 , G01S13/767 , G01S13/878 , H01Q1/241 , H01Q1/246 , H01Q21/28 , H04L5/005 , H04L5/0048 , G01S2013/466 , G01S2013/468
摘要： Systems and methods for determining user equipment (UE) locations within a wireless network using reference signals of the wireless network are described. The disclosed systems and methods utilize a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with two or more antennas of the wireless system. Based on received reference signal parameters the reference signal within the signals from each receive channel among the receive channels is identified. Based on the identified reference signal from each receive channel, an angle of arrival between a baseline of the two or more antennas and incident energy from the UE to the two or more antennas is determined. That angle of arrival is then used to calculate the location of the UE. The angle of arrival may be a horizontal angle of arrival and/or a vertical angle of arrival.

2. 发明授权

US11125870B2 Moving-target detection system and moving-target detection method 有权
公开(公告)号：US11125870B2
公开(公告)日：2021-09-21
申请号：US16328016
申请日：2017-08-23
申请人： NEC CORPORATION
发明人： Hisashi Shiba
IPC分类号： G01S13/50 , G01S13/524 , G01S13/56 , G01S13/58 , G01S13/34 , G01S13/24 , G01S13/536
摘要： In order to enhance the performance with which a moving target is detected by a single sensor and with a degree of freedom in a transmission waveform, a moving-target detection system 1 has a transmission waveform setting means 101 for setting a transmission waveform St(t), a transmission means 102 for transmitting a wave having the set transmission waveform St(t), a reception means 103 for receiving a wave including a reflected wave from a target, a Doppler shift estimation means 104 for estimating a Doppler shift that occurs due to movement of the target from the transmission waveform St(t) and a reception waveform Sr(t) including the reflected wave, a transmission waveform deformation means 105 for generating a deformed transmission waveform in which the transmission waveform St(t) is deformed in accordance with the estimated Doppler shift, and a target sensing means 106 for sensing the target using the deformed transmission waveform.

3. 发明申请

US20210165087A1 METHOD AND SYSTEM FOR INTRA-PULSE FREQUENCY ESTIMATION AGAINST AGILE EMITTERS 有权
公开(公告)号：US20210165087A1
公开(公告)日：2021-06-03
申请号：US16046508
申请日：2018-07-26
申请人： MERCURY SYSTEMS, INC.
发明人： Robert Liechty
IPC分类号： G01S13/24 , G01S7/34 , G01S13/20
摘要： A radar detection system that estimates the received pulse frequency of a pulse in a received radar signal using a signal transmit frequency or one that uses frequency agility during a pulse duration. The radar detector system may include a radar detector that receives the radar signal from an antenna or antenna array. The receiver may be channelized, and each channel path may include Gaussian bandpass filter(s) centered at a different frequencies. The system includes an extended range radar detector that receives the signal in the channels and processing logic that processes the detected channel signals to identify the pulse frequency of emitters with or without frequency agility during a pulse duration. The frequency estimates of the pulse are based on calibrated amplitude differences in adjacent channels.

4. 发明授权

US10761204B2 Radar attenuation mitigation 有权
公开(公告)号：US10761204B2
公开(公告)日：2020-09-01
申请号：US15844493
申请日：2017-12-15
申请人： Google LLC
发明人： Patrick M. Amihood , David Weber , Houshang Aghahassan , Abhijit A. Shah , Jaime Lien
IPC分类号： G01S13/72 , G01S13/24 , G01S13/931 , G01S7/40 , G01S7/02
摘要： Techniques and apparatuses are described that enable radar attenuation mitigation. To improve radar performance, characteristics of an attenuator and/or properties of a radar signal are determined to reduce attenuation of the radar signal due to the attenuator and enable a radar system to detect a target located on an opposite side of the attenuator. These techniques are beneficial in situations in which the attenuator is unavoidably located between the radar system and a target, either due to integration within other electronic devices or due to an operating environment. These techniques save power and cost by reducing the attenuation without increasing transmit power or changing material properties of the attenuator.

5. 发明申请

US20190342709A1 MULTI-PATH MITIGATION IN RANGEFINDING AND TRACKING OBJECTS USING REDUCED ATTENUATION RF TECHNOLOGY 审中-公开
公开(公告)号：US20190342709A1
公开(公告)日：2019-11-07
申请号：US16517133
申请日：2019-07-19
申请人： POLTE CORPORATION
发明人： Felix Markhovsky , Truman Prevatt
IPC分类号： H04W4/02 , H04L5/00 , G01S5/14 , G01S3/74 , G01S13/87 , G01S13/76 , G01S13/24 , G01S13/22 , H04W4/90 , G01S5/02
摘要： An autonomous system with no Customer Network Investment is described, wherein the system is configurable to operate on in a band in addition to the LTE band. Such system allows the definition of hybrid operations to accommodate the positioning reference signals (PRS) of LTE and already existing reference signals. The system can operate with PRS, with other reference signals such as cell-specific reference signals (CRS), or with both signal types. As such, the system provides the advantage of allowing network operator(s) to dynamically choose between modes of operation depending on circumstances, such as network throughput and compatibility. The system further enables information collected at a network device to be processed at a locate server without involving any processing at the network device.

6. 发明授权

US10175342B2 Dispersive target identification 有权
公开(公告)号：US10175342B2
公开(公告)日：2019-01-08
申请号：US15070235
申请日：2016-03-15
申请人： FirstGuard Technologies Corporation
发明人： Dennis McCaughey , Shantanu Sanyal , James Steven Pressnall
IPC分类号： G01S7/41 , G01S13/34 , G01S13/24 , G01S13/04
摘要： A first frequency agile waveform and additional frequency agile signal waveform(s) having in-phase and a quadrature phase components, each shifted by a different delta frequency, are transmitted in the direction of a possible dispersive target. Return signal(s) each comprising an in-phase component and a quadrature phase component associated with each of the frequency agile waveform(s) are received. The return signal(s) associated with the frequency agile signal waveform(s) are phase shifted by their respective delta frequenc(ies). A combined return signal is generated by combining the first return signal and the additional phase shifted return signal(s). A probability of a potential target is determined when the combined return signal exceeds a threshold.

7. 发明授权

US09813867B2 Angle of arrival (AOA) positioning method and system for positional finding and tracking objects using reduced attenuation RF technology 有权
公开(公告)号：US09813867B2
公开(公告)日：2017-11-07
申请号：US15289033
申请日：2016-10-07
申请人： PoLTE Corporation
发明人： Truman Prevatt
IPC分类号： H04W24/00 , H04W4/02 , H04L5/00 , H01Q1/24 , G01S5/02 , G01S3/74 , G01S5/14 , G01S13/22 , G01S13/24 , G01S13/76 , G01S13/87 , G01S13/46
CPC分类号： H04W4/023 , G01S3/74 , G01S5/0205 , G01S5/0215 , G01S5/0252 , G01S5/0257 , G01S5/0263 , G01S5/0273 , G01S5/14 , G01S13/222 , G01S13/24 , G01S13/767 , G01S13/878 , G01S2013/466 , G01S2013/468 , H01Q1/241 , H01Q1/246 , H01Q21/28 , H04L5/0048
摘要： Systems and methods for determining user equipment (UE) locations within a wireless network using reference signals of the wireless network are described. The disclosed systems and methods utilize a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with two or more antennas of the wireless system. Based on received reference signal parameters the reference signal within the signals from each receive channel among the receive channels is identified. Based on the identified reference signal from each receive channel, an angle of arrival between a baseline of the two or more antennas and incident energy from the UE to the two or more antennas is determined. That angle of arrival is then used to calculate the location of the UE. The angle of arrival may be a horizontal angle of arrival and/or a vertical angle of arrival.

8. 发明授权

US09689980B2 Secondary surveillance radar system for air traffic control 有权
公开(公告)号：US09689980B2
公开(公告)日：2017-06-27
申请号：US13377756
申请日：2010-06-10
申请人： Alexander Pawlitzki
发明人： Alexander Pawlitzki
IPC分类号： G01S13/00 , G01S13/78 , G01S7/00 , G01S13/87 , G01S13/28 , G01S13/24 , G01S7/02
CPC分类号： G01S13/781 , G01S7/003 , G01S7/023 , G01S13/24 , G01S13/28 , G01S13/878
摘要： The invention refers to a secondary surveillance radar, referred to hereinafter as SSR, system (1) for air traffic control. The SSR-system (1) comprises a plurality of secondary radar stations (2) and is adapted for determining a location of an air traffic vehicle within the range of coverage of at least some of the secondary radar stations (2) by means of propagation time measurement of data signals (8) transmitted between the secondary radar stations (2) and a transponder (9) of the air traffic vehicle. Each of the secondary radar stations (2) works on a synchronized local time base. In order to provide for a high-precision synchronisation of the radar stations (2) of the SSR system (1) free of clusters, it is suggested that an SSR system's (1) secondary radar station (2) is synchronized depending on the content of synchronisation signals (10) received by the secondary radar station (2) to be synchronized and broadcast by one of the other secondary radar stations (2) of the SSR system (1). Preferably, the content comprises a time of transmission of the synchronisation signal (10).

9. 发明授权

US09069066B2 Radar deception jamming prevention using bi-static and mono-static radars 有权
标题翻译：使用双静态和单静态雷达的雷达欺骗干扰预防
公开(公告)号：US09069066B2
公开(公告)日：2015-06-30
申请号：US13898081
申请日：2013-05-20
申请人： Faran Awais Butt , Ijaz Haider Naqvi , Ali Imran Najam
发明人： Faran Awais Butt , Ijaz Haider Naqvi , Ali Imran Najam
IPC分类号： G01S7/36 , G01S13/87 , G01S13/24 , G01S13/66 , G01S7/00 , G01S13/00
CPC分类号： G01S13/003 , G01S7/36 , G01S13/24 , G01S13/66 , G01S13/87
摘要： A method of preventing the jamming of radars is provided utilizing two radars located at a distance to prevent both velocity and range pull off.
摘要翻译：利用位于一定距离处的两个雷达来提供防止雷达卡住的方法，以防止速度和范围拉断。

10. 发明授权

US08884814B2 Processing method for FMCW radar signal with dual pulse repetition frequency 有权
标题翻译：具有双脉冲重复频率的FMCW雷达信号处理方法
公开(公告)号：US08884814B2
公开(公告)日：2014-11-11
申请号：US13707528
申请日：2012-12-06
申请人： Yao-Hwa Wen , Min-Fang Lo
发明人： Yao-Hwa Wen , Min-Fang Lo
IPC分类号： G01S13/24 , G01S13/30 , G01S7/288
CPC分类号： G01S13/24 , G01S13/30 , G01S2007/2883
摘要： A processing method for radar signal with dual pulse repetition frequency, comprising: generating a first transmission signal and a second transmission signal, and perform a transmission process; reflecting a first echo signal and a second echo signal from an object, and converting the first transmission signal and the second transmission signal to a frequency domain information by using 2D (Two Dimension) fast Fourier transform (FFT); and filtering noise in the frequency domain information, and performing a calculation program by using a algorithm to obtain Doppler shift of the object. Thereby, the processing method of the present invention can overcome the bad operation ability of the lower hardware and advance the radar target detection speed restrictions.
摘要翻译：一种具有双脉冲重复频率的雷达信号的处理方法，包括：产生第一传输信号和第二传输信号，并执行传输处理; 反映来自物体的第一回波信号和第二回波信号，并且通过使用2D（二维）快速傅立叶变换（FFT）将第一发送信号和第二发送信号转换为频域信息; 并且对频域信息中的噪声进行滤波，并且通过使用算法来执行计算程序以获得对象的多普勒频移。因此，本发明的处理方法可以克服下方硬件的不良操作能力，提高雷达目标检测速度的限制。

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