公开(公告)号：US20210156979A1

公开(公告)日：2021-05-27

申请号：US17164966

申请日：2021-02-02

申请人： UHNDER, INC.

发明人： Raghunath K. Rao ,  Curtis Davis ,  Monier Maher ,  Steve Borho ,  Nikhilesh Bhagat ,  Jean P. Bordes

IPC分类号： G01S13/34 ,  G01S13/28 ,  G01S13/931 ,  G01S13/58 ,  G01S7/292 ,  G01S7/35 ,  G01S13/32 ,  G01S7/288 ,  G01S7/40 ,  G01S7/41 ,  G01S13/10 ,  G01S13/38 ,  G01S13/522 ,  G01S13/90

摘要： A radar system including a transmitter configured for installation and use with the radar system and configured to transmit radio signals. The transmitted radio signals are defined by a spreading code. The radar system also includes a receiver configured for installation and use with the radar system and configured to receive radio signals that include transmitted radio signals transmitted by the transmitter and reflected from objects in an environment. The receiver is configured to convert the received radio signals into frequency domain received samples. The receiver is also configured to correlate the frequency domain received samples to detect object distance.

公开(公告)号：US10551482B2

公开(公告)日：2020-02-04

申请号：US15994465

申请日：2018-05-31

申请人： UHNDER, INC.

发明人： Aria Eshraghi ,  Jean P. Bordes ,  Curtis Davis ,  Raghunath K. Rao ,  Murtaza Ali ,  Paul W. Dent

IPC分类号： G01S7/02 ,  G01S7/35 ,  G01S7/40 ,  G01S13/93 ,  G01S7/03 ,  G01S13/87 ,  G01S13/34 ,  G01S7/28 ,  G01S7/292

摘要： A radar system is described that comprises a transmitter and a receiver. The transmitter transmits radio signals. The receiver receives interfering signals due to local signal coupling of transmitted signals. The local signal coupling comprises at least one interfering path or mechanism. The receiver is configured to output a replica of each of the interfering signals. Each replica is configured to replicate a particular interfering signal received. The receiver is configured to combine into a signal path a replica of an interfering signal to subtract the interfering signal from the signal path. The receiver receives the transmitted radio signals transmitted by the transmitter and reflected from objects in an environment without saturating the signal path due to the subtraction of the interfering signal from the signal path.

公开(公告)号：US10261179B2

公开(公告)日：2019-04-16

申请号：US15496038

申请日：2017-04-25

申请人： UHNDER, INC.

发明人： Curtis Davis ,  Monier Maher ,  Jean P. Bordes ,  Manju Hegde ,  Otto A. Schmid ,  Raghunath K. Rao ,  Marius Goldenberg ,  Aria Eshraghi ,  Vito Giannini ,  David S. Trager ,  Nikhilesh Bhagat ,  Srikanth Gollapudi ,  Sundar Govindarajan ,  Steve Borho ,  Jonathan Preussner ,  Paul W. Dent ,  Paul Bassett ,  Stephen W. Alland ,  Fred Harris ,  Wayne E. Stark ,  Murtaza Ali

IPC分类号： G01S7/02 ,  G01S13/32 ,  G01S13/93

摘要： A radar system has different modes of operation. In one mode, the radar operates as a single-input, multiple output (SIMO) radar system utilizing one transmitted signal from one antenna at a time. Codes with known excellent autocorrelation properties are utilized in this mode. At each receiver the response after correlating with various possible transmitted signals is measured in order to estimate the interference that each transmitter will represent at each receiver. The estimated effect of the interference from one transmitter to a receiver that correlates with a different code is used to mitigate the interference. In another mode, the radar operates as a multi-input, multiple-output (MIMO) radar system utilizing all the antennas at a time. Interference cancellation of the nonideal cross-correlation sidelobes when transmitting in the MIMO mode are employed to remove ghost targets due to unwanted sidelobes.

公开(公告)号：US20180329027A1

公开(公告)日：2018-11-15

申请号：US15994465

申请日：2018-05-31

申请人： UHNDER, INC.

发明人： Aria Eshraghi ,  Jean P. Bordes ,  Curtis Davis ,  Raghunath K. Rao ,  Murtaza Ali ,  Paul W. Dent

IPC分类号： G01S7/02 ,  G01S7/28 ,  G01S13/93

CPC分类号： G01S7/023 ,  G01S7/038 ,  G01S7/2813 ,  G01S7/292 ,  G01S7/354 ,  G01S7/4021 ,  G01S13/347 ,  G01S13/87 ,  G01S13/931 ,  G01S2007/358 ,  G01S2013/9375 ,  G01S2013/9378

摘要： A radar system is described that comprises a transmitter and a receiver. The transmitter transmits radio signals. The receiver receives interfering signals due to local signal coupling of transmitted signals. The local signal coupling comprises at least one interfering path or mechanism. The receiver is configured to output a replica of each of the interfering signals. Each replica is configured to replicate a particular interfering signal received. The receiver is configured to combine into a signal path a replica of an interfering signal to subtract the interfering signal from the signal path. The receiver receives the transmitted radio signals transmitted by the transmitter and reflected from objects in an environment without saturating the signal path due to the subtraction of the interfering signal from the signal path.

公开(公告)号：US20170307729A1

公开(公告)日：2017-10-26

申请号：US15496314

申请日：2017-04-25

申请人： UHNDER, INC.

发明人： Aria Eshraghi ,  Jean P. Bordes ,  Curtis Davis ,  Raghunath K. Rao ,  Murtaza Ali ,  Paul W. Dent

IPC分类号： G01S7/35 ,  G01S7/40 ,  G01S13/93 ,  G01S7/03 ,  G01S7/292

CPC分类号： G01S7/354 ,  G01S7/038 ,  G01S7/292 ,  G01S7/4021 ,  G01S13/347 ,  G01S13/87 ,  G01S13/931 ,  G01S2007/358 ,  G01S2013/9375 ,  G01S2013/9378

摘要： A digital FMCW radar is described that simultaneously transmits and receives digitally frequency modulated signals using multiple transmitters and multiple receivers and associated antennas. Several sources of nearby spillover from transmitters to receivers that would otherwise degrade receiver performance are subtracted by a cancellation system in the analog radio frequency domain that adaptively synthesizes an analog subtraction signal based on residual spillover measured by a correlator operating in the receivers' digital signal processing domains and based on knowledge of the transmitted waveforms. The first adaptive cancellation system achieves a sufficient reduction of transmit-receive spillover to avoid receiver saturation or other non-linear effects, but is then added back in to the signal path in the digital domain after analog-to-digital conversion so that spillover cancellation can also operate in the digital signal processing domain to remove deleterious spillover components.

公开(公告)号：US09599702B1

公开(公告)日：2017-03-21

申请号：US15204002

申请日：2016-07-07

申请人： UHNDER, INC.

发明人： Jean P. Bordes ,  Raghunath K. Rao ,  Monier Maher

IPC分类号： G01S13/50 ,  G01S13/93 ,  G01S13/32 ,  G01S7/35 ,  G01S13/18

CPC分类号： G01S13/50 ,  G01S7/354 ,  G01S13/18 ,  G01S13/325 ,  G01S13/36 ,  G01S13/931 ,  G01S2007/356 ,  G01S2013/9375 ,  G01S2013/9378 ,  G01S2013/9385 ,  G01S2013/9392

摘要： A radar sensing system for a vehicle includes a transmitter, a receiver, a memory, and a processor. The transmitter transmits a radio signal and the receiver receives a reflected radio signal. The processor samples reflected radio signals during a plurality of time slices. The processor produces samples by correlating reflected radio signals to time-delayed replicas of transmitted radio signals. The processor accumulates the time slices into a first radar data cube and stores the first radar data cube in a memory. The processor combines a portion of the first radar data cube with a portion of a previously stored radar data cube. Based at least in part on the combined portions of the radar data cubes, the processor processes a time series that is a time series of the first radar data cube concatenated with a time series from the previously stored radar data cube.

公开(公告)号：US20210364634A1

公开(公告)日：2021-11-25

申请号：US17395823

申请日：2021-08-06

申请人： UHNDER, INC.

发明人： Curtis Davis ,  Monier Maher ,  Jean P. Bordes ,  Manju Hegde ,  Otto A. Schmid ,  Raghunath K. Rao ,  Marius Goldenberg ,  Aria Eshraghi ,  Vito Giannini ,  David S. Trager ,  Nikhilesh Bhagat ,  Srikanth Gollapudi ,  Sundar Govindarajan ,  Steve Borho ,  Jonathan Preussner ,  Paul W. Dent ,  Paul Bassett ,  Stephen W. Alland ,  Fred Harris ,  Wayne E. Stark ,  Murtaza Ali

IPC分类号： G01S13/931 ,  G01S7/02 ,  G01S13/87 ,  H04L27/227

摘要： A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system includes transmitters configured to transmit radio signals, receivers configured to receive radar signals, and a control unit. The received radio signals include transmitted radio signals transmitted by the transmitters and reflected from objects in an environment. The control unit adaptively controls the transmitters and the receivers based on a selected operating mode for the radar system. The selected operating mode meets a desired operational objective defined by current environmental conditions. The control unit is configured to control the receivers to produce and process data according to the selected operating mode.

公开(公告)号：US11086010B2

公开(公告)日：2021-08-10

申请号：US16207910

申请日：2018-12-03

申请人： UHNDER, INC.

发明人： Curtis Davis ,  Monier Maher ,  Jean P. Bordes ,  Manju Hegde ,  Otto A. Schmid ,  Raghunath K. Rao ,  Marius Goldenberg ,  Aria Eshraghi ,  Vito Giannini ,  David S. Trager ,  Nikhilesh Bhagat ,  Srikanth Gollapudi ,  Sundar Govindarajan ,  Steve Borho ,  Jonathan Preussner ,  Paul W. Dent ,  Paul Bassett ,  Stephen W. Alland ,  Fred Harris ,  Wayne E. Stark ,  Murtaza Ali

IPC分类号： G01S13/931 ,  G01S7/02 ,  G01S13/87 ,  H04L27/227 ,  G01S7/35 ,  H04B17/309 ,  H04B17/345

摘要： A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system processes the received signal to achieve different objectives depending on one or more of a selected range resolution, a selected velocity resolution, and a selected angle of arrival resolution, as defined by memory requirements and processing requirements. The system allows improved resolution of range, Doppler and/or angle depending on the memory requirements and processing requirements. The system also adapts to changing environmental conditions including interfering radio signals.

公开(公告)号：US09945943B2

公开(公告)日：2018-04-17

申请号：US15632754

申请日：2017-06-26

申请人： UHNDER, INC.

发明人： Wayne E. Stark ,  Jean P. Bordes ,  Curtis Davis ,  Raghunath K. Rao ,  Monier Maher ,  Manju Hegde ,  Otto A. Schmid

IPC分类号： G01S13/93 ,  G01S7/02 ,  H04B17/345 ,  H04L27/227 ,  G01S7/292 ,  G01S7/40 ,  H04B17/309 ,  H04B7/0413

CPC分类号： G01S13/93 ,  G01S7/023 ,  G01S7/292 ,  G01S7/4021 ,  G01S13/87 ,  G01S13/878 ,  G01S13/931 ,  G01S2013/9357 ,  G01S2013/936 ,  G01S2013/9375 ,  G01S2013/9378 ,  H04B7/0413 ,  H04B17/309 ,  H04B17/345 ,  H04L27/2278

摘要： A radar system has different modes of operation. In one mode the radar operates as a single-input, multiple-output (SIMO) radar system utilizing one transmitted signal from one antenna at a time. Codes with known excellent autocorrelation properties are utilized in this mode. At each receiver the response after correlating with various possible transmitted signals is measured in order to estimate the interference that each transmitter will represent at each receiver. The estimated effect of the interference from one transmitter on a receiver that correlates with a different code is used to mitigate the interference. In another mode, the radar operates as a MIMO radar system utilizing all the antennas at a time. Interference cancellation of the non-ideal cross correlation sidelobes when transmitting in the MIMO mode are employed to remove ghost targets due to unwanted sidelobes.

公开(公告)号：US20180031675A1

公开(公告)日：2018-02-01

申请号：US15782305

申请日：2017-10-12

申请人： UHNDER, INC.

发明人： Aria Eshraghi ,  Jean P. Bordes ,  Curtis Davis ,  Raghunath K. Rao ,  Murtaza Ali ,  Paul W. Dent

IPC分类号： G01S7/35 ,  G01S7/40 ,  G01S13/93 ,  G01S7/03 ,  G01S7/292

CPC分类号： G01S7/354 ,  G01S7/038 ,  G01S7/292 ,  G01S7/4021 ,  G01S13/347 ,  G01S13/87 ,  G01S13/931 ,  G01S2007/358 ,  G01S2013/9375 ,  G01S2013/9378

摘要： A radar system is described that comprises a transmitter, a receiver, a spillover cancellation unit, and a combiner. The transmitter transmits radio signals. The receiver receives interfering signals due to local signal coupling of transmitted signals. The local signal coupling comprises at least one interfering path or mechanism. The spillover cancellation unit is configured to output a replica of each of the interfering signals. Each replica is configured to replicate a particular interfering signal received through a particular interfering path or mechanism. The combiner is configured to combine into a signal path of the receiver, a replica of an interfering signal to subtract the interfering signal from the receiver's signal path. The receiver receives the transmitted radio signals reflected from objects in the environment without saturating the signal path of the receiver due to the subtraction of the interfering signal from the receiver's signal path.