公开(公告)号：US20180081029A1

公开(公告)日：2018-03-22

申请号：US15822629

申请日：2017-11-27

申请人： UHNDER, INC.

发明人： Curtis Davis ,  Jean P. Bordes ,  Monier Maher ,  Wayne Stark ,  Raghunath K. Rao

IPC分类号： G01S7/282 ,  G01S13/93 ,  G01S13/70 ,  G01S13/18

摘要： A radar system includes a transmitter, a receiver and a processor. The receiver receives radio signal that includes the transmitted radio signal reflected from targets in the environment. The received radio signal is provided to the processor. The processor samples the received radio signal during a plurality of time intervals to produce a sampled stream. The different time intervals of the plurality of time intervals will contain different signal levels of radio signals reflected from the targets. The processor also selects a particular time interval of the plurality of time intervals that is free of samples of radio signals reflected off of the targets that are closer than a first threshold distance from an equipped vehicle. The transmitter and/or the receiver is adjusted such that samples of radio signals reflected off of targets that are farther than the first threshold distance are detected.

公开(公告)号：US20180048493A1

公开(公告)日：2018-02-15

申请号：US15791495

申请日：2017-10-24

申请人： UHNDER, INC.

发明人： Jean P. Bordes ,  Aria Eshraghi ,  David S. Trager ,  Murtaza Ali ,  Raghunath K. Rao

IPC分类号： H04L25/03 ,  H04B7/145 ,  H04L12/935

CPC分类号： H04L25/03006 ,  G01S7/023 ,  G01S13/00 ,  G01S13/325 ,  G01S13/931 ,  G01S2013/9375 ,  G01S2013/9378 ,  H04B7/145 ,  H04B7/155 ,  H04J11/004 ,  H04L25/0204 ,  H04L49/3063

摘要： A radar system for a vehicle includes a transmitter, a receiver, and an interference mitigator. The transmitter transmits radio signals. The receiver receives radio signals. The received radio signals include transmitted radio signals reflected from objects. The receiver also processes the received radio signals to produce a sample stream. The interference mitigator successively (i) generates respective signals corresponding to the transmitted radio signals that are reflected from each of a plurality of objects, and (ii) adds the respective signals to the sample stream to form a modified sample stream. The addition of the respective signals removes interference from the sample stream due to the transmitted radio signals reflected from the plurality of objects. The receiver is configured to use the modified sample stream to detect a first object at a first range which is more distant than respective ranges of the plurality of objects.

公开(公告)号：US20170363731A1

公开(公告)日：2017-12-21

申请号：US15690898

申请日：2017-08-30

申请人： UHNDER, INC.

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

IPC分类号： G01S13/50 ,  G01S7/35 ,  G01S13/36 ,  G01S13/93 ,  G01S13/18 ,  G01S13/32

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 (RDC) and selectively processes a portion of the first RDC to produce a first partial Doppler output. The processor produces samples during a second scan and accumulates time slices into a second RDC, and then selectively processes a portion of the second RDC to produce a second partial Doppler output. The processor numerically accumulates the first and second partial Doppler outputs to create a full Doppler output and stores the full Doppler output in memory.

公开(公告)号：US09806914B1

公开(公告)日：2017-10-31

申请号：US15491193

申请日：2017-04-19

申请人： UHNDER, INC.

发明人： Jean P. Bordes ,  Aria Eshraghi ,  David S. Trager ,  Murtaza Ali ,  Raghunath K. Rao

IPC分类号： G01S13/42 ,  H04L25/03 ,  H04B7/145 ,  H04L12/935

CPC分类号： H04L25/03006 ,  G01S13/00 ,  H04B7/145 ,  H04B7/155 ,  H04J11/004 ,  H04L25/0204 ,  H04L49/3063

摘要： A radar sensing system for a vehicle includes a transmitter, a receiver, and an interference mitigation processor. The transmitter transmits radio signals. The receiver receives radio signals. The received radio signals include reflected radio signals that are each transmitted radio signals reflected from objects in the environment. The receiver also down-converts and digitizes the received radio signals to produce a baseband sampled stream. The interference mitigation processor produces a second received radio signal that includes reflected radio signals that are transmitted radio signals reflected from a first object. The interference mitigation processor uses the second received radio signal to remove selected samples from the baseband sampled stream that are attributed to radio signals reflected from the first object to produce a modified baseband sampled stream. The receiver uses the modified baseband sampled stream to detect a second object more distant than the first object.

公开(公告)号：US09753121B1

公开(公告)日：2017-09-05

申请号：US15292755

申请日：2016-10-13

申请人： UHNDER, INC.

发明人： Curtis Davis ,  Jean P. Bordes ,  Monier Maher ,  Wayne Stark ,  Raghunath K. Rao

IPC分类号： G01S7/282 ,  G01S13/18 ,  G01S13/70 ,  G01S13/93 ,  G01S13/00

CPC分类号： G01S7/282 ,  G01S7/023 ,  G01S7/032 ,  G01S7/038 ,  G01S13/18 ,  G01S13/70 ,  G01S13/931 ,  G01S2013/9321 ,  G01S2013/9375 ,  G01S2013/9378 ,  G01S2013/9389

摘要： A radar sensing system includes at least one transmitter, at least one receiver and a processor. The at least one transmitter transmits a power shaped RF signal. The transmitted RF signal decreases in power over time. The at least one receiver receives a reflected RF signal. The reflected RF signal is the transmitted RF signal reflected from targets in the environment. The reflected RF signal is down-converted and the result provided to the processor. The processor samples the down-converted reflected RF signal during a plurality of time intervals to produce a sampled stream. The different time intervals of the plurality of time intervals will contain different signal levels of RF signals reflected from the targets. The processor also selects samples in the sampled stream over a selected time interval of the plurality of time intervals that is free of RF signals reflected off of near targets.

公开(公告)号：US09689967B1

公开(公告)日：2017-06-27

申请号：US15481648

申请日：2017-04-07

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 ,  H04B7/0413 ,  G01S7/40 ,  H04B17/309 ,  G01S7/292

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.