公开(公告)号：US20160350987A1

公开(公告)日：2016-12-01

申请号：US14722800

申请日：2015-05-27

Applicant: NXP B.V.

Inventor： Zoran Zivkovic ,  Liang Li

IPC: G07C9/00

CPC classification number: G07C9/00007 ,  G07C9/00174 ,  G07C2009/00555 ,  G07C2209/63

Abstract: Aspects of the disclosure are directed to detecting interactions with signals, such as by an attacker attempting to gain access to a vehicle. Signal waveforms used for authentication are evaluated, for communications between respective circuits. Possible interaction by a third circuit is analyzed by detecting variations in characteristics of a leading portion of a data symbol relative to known characteristics of the leading portion of the data signal. A condition indicative of whether the signal waveform has been interacted with and retransmitted is determined, based on the detected variations. For instance, if the variations are indicative of a known type of variation induced by interaction and retransmission, such interaction and transmission can be detected. Where the determined condition is not deemed an attack, an output signal that provides vehicle access is generated based on the determined condition.

Abstract translation: 本公开的方面旨在检测与信号的交互，例如由尝试访问车辆的攻击者。 用于认证的信号波形被评估用于各个电路之间的通信。 通过检测数据符号的前导部分的相对于数据信号的前导部分的已知特性的特性的变化来分析第三电路的可能的交互。 基于检测到的变化来确定指示信号波形是否已经交互并重传的条件。 例如，如果变化表示由交互和重传引起的已知类型的变化，则可以检测到这种交互和传输。 在确定的条件不被认为是攻击的情况下，基于所确定的条件生成提供车辆访问的输出信号。

公开(公告)号：US10782395B2

公开(公告)日：2020-09-22

申请号：US15848310

申请日：2017-12-20

Applicant: NXP B.V.

Inventor： Ziqiang Tong ,  Liang Li

IPC: G01S13/58 ,  G01S13/86 ,  G01S13/931 ,  G01S7/00

Abstract: Embodiments are provided herein for a radar system and a method for determining true velocity, which includes: obtaining a radial velocity component that corresponds to a target object, based on sensor data detected by a radar sensor on a vehicle; obtaining a true velocity magnitude of the target object from a communication protocol; and calculating a true velocity angle of direction of the target object based on a trigonometric relationship established between the radial velocity component and the true velocity vector.

公开(公告)号：US20190187267A1

公开(公告)日：2019-06-20

申请号：US15848251

申请日：2017-12-20

Applicant: NXP B.V.

Inventor： Liang Li ,  Ziqiang Tong

IPC: G01S13/34 ,  G01S13/58 ,  G01S7/292 ,  G01S13/93

CPC classification number: G01S13/343 ,  G01S7/292 ,  G01S13/58 ,  G01S13/584 ,  G01S13/589 ,  G01S13/878 ,  G01S13/931 ,  G01S2013/9375 ,  G01S2013/9385

Abstract: Embodiments are provided herein for a radar system and a method for determining true velocity, which includes: obtaining a first radial velocity component that corresponds to a target object, based on sensor data detected by a first radar sensor on a vehicle; obtaining a second radial velocity component that corresponds to the target object, based on sensor data detected by a second radar sensor on the vehicle; and calculating a true velocity vector of the target object based on a trigonometric relationship established between the first radial velocity component and the second radial velocity component.

公开(公告)号：US09613475B2

公开(公告)日：2017-04-04

申请号：US14722800

申请日：2015-05-27

Applicant: NXP B.V.

Inventor： Zoran Zivkovic ,  Liang Li

IPC: G07C9/00

CPC classification number: G07C9/00007 ,  G07C9/00174 ,  G07C2009/00555 ,  G07C2209/63

Abstract: Aspects of the disclosure are directed to detecting interactions with signals, such as by an attacker attempting to gain access to a vehicle. Signal waveforms used for authentication are evaluated, for communications between respective circuits. Possible interaction by a third circuit is analyzed by detecting variations in characteristics of a leading portion of a data symbol relative to known characteristics of the leading portion of the data signal. A condition indicative of whether the signal waveform has been interacted with and retransmitted is determined, based on the detected variations. For instance, if the variations are indicative of a known type of variation induced by interaction and retransmission, such interaction and transmission can be detected. Where the determined condition is not deemed an attack, an output signal that provides vehicle access is generated based on the determined condition.