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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.
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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.
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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
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.
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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
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.
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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
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.
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公开(公告)号：US09791564B1
公开(公告)日：2017-10-17
申请号：US15492160
申请日：2017-04-20
申请人： UHNDER, INC.
发明人： Fred Harris , David Trager , Curtis Davis , Raghunath K. Rao
CPC分类号： G01S13/931 , G01S7/023 , G01S13/325 , G01S13/34 , G01S13/36 , G01S13/93 , G01S2007/356 , G01S2013/9375 , G01S2013/9378
摘要： A radar sensing system for a vehicle includes a transmitter configured for installation and use on a vehicle and able to transmit radio signals. The radar sensing system also includes a receiver and a processor. The receiver is configured for installation and use on the vehicle and able to receive radio signals. The received radio signals include transmitted radio signals that are reflected from objects in the environment. The received radio signals further include radio signals transmitted by at least one other radar system. The processor samples the received radio signals to produce a sampled stream. The processor is configured to control an adaptive filter. Responsive to the processor, the adaptive filter is configured to filter the sampled stream, such that the radio signals transmitted by the at least one other radar system are removed from the received radio signals.
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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
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.
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公开(公告)号：US11614538B2
公开(公告)日：2023-03-28
申请号：US17683711
申请日：2022-03-01
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 , G01S13/32
摘要： A radar sensing system including transmit antennas and receive antennas, transmitters, receivers, and a controller. The system further includes a transmit antenna switch selectively coupling each of the transmitters to a respective transmit antenna, and a receive antenna switch selectively coupling at least one receiver of the receivers to respective receive antennas. A quantity of receivers is different from a quantity of the receive antennas. The controller is operable to select a quantity of receivers to be coupled to receive antennas to realize a desired quantity of virtual receivers. The controller is operable to select an antenna pattern as defined by the selected quantity of receivers coupled to receive antennas.
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公开(公告)号：US10908272B2
公开(公告)日：2021-02-02
申请号：US15689273
申请日：2017-08-29
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： G01S13/10 , G01S13/34 , G01S13/38 , G01S13/28 , G01S13/931 , G01S13/58 , G01S7/292 , G01S7/35 , G01S13/32 , G01S7/288 , G01S7/40 , G01S7/41 , G01S13/522 , G01S13/90
摘要： A radar sensing system for a vehicle includes a transmitter configured for installation and use on a vehicle and able to transmit radio signals. The radar sensing system also includes a receiver and a processor. The receiver is configured for installation and use on the vehicle and is able to receive radio signals that include transmitted radio signals reflected from objects in the environment. The processor samples the received radio signals to produce a sampled stream. The processor processes the sampled stream such that the sampled stream is correlated with various delayed versions of a baseband signal. The correlations are used to determine an improved range, velocity, and angle of targets in the environment.
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公开(公告)号：US20190302224A1
公开(公告)日：2019-10-03
申请号：US16443205
申请日：2019-06-17
申请人： UHNDER, INC.
摘要： A radar system includes a transmitter, a receiver, and a processor. The transmitter is configured to transmit a radio signal. The receiver is configured to receive a radio signal which includes the transmitted radio signal reflected from an object in the environment. The processor is configured to control the transmitter and the receiver to at least one of mitigate interference in the received radio signals, and avoid interfering radio signals transmitted by another radio transmitter.
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