公开(公告)号：US12066566B2

公开(公告)日：2024-08-20

申请号：US17462086

申请日：2021-08-31

Applicant: Texas Instruments Incorporated

Inventor： Brian Paul Ginsburg ,  Karthik Subburaj ,  Karthik Ramasubramanian ,  Sachin Bhardwaj ,  Sriram Murali ,  Sandeep Rao

IPC: G01S7/35 ,  G01S7/02 ,  G01S7/40 ,  G01S13/32 ,  G01S13/931

CPC classification number: G01S7/352 ,  G01S7/023 ,  G01S7/40 ,  G01S13/32 ,  G01S13/931

Abstract: A frequency modulated continuous wave (FMCW) radar system is provided that includes a receiver configured to generate a digital intermediate frequency (IF) signal, and an interference monitoring component coupled to the receiver to receive the digital IF signal, in which the interference monitoring component is configured to monitor at least one sub-band in the digital IF signal for interference, in which the at least one sub-band does not include a radar signal.

公开(公告)号：US20210389418A1

公开(公告)日：2021-12-16

申请号：US17462086

申请日：2021-08-31

Applicant: Texas Instruments Incorporated

Inventor： Brian Paul Ginsburg ,  Karthik Subburaj ,  Karthik Ramasubramanian ,  Sachin Bhardwaj ,  Sriram Murali ,  Sandeep Rao

IPC: G01S7/35 ,  G01S7/40 ,  G01S13/32 ,  G01S7/02 ,  G01S13/931

Abstract: A frequency modulated continuous wave (FMCW) radar system is provided that includes a receiver configured to generate a digital intermediate frequency (IF) signal, and an interference monitoring component coupled to the receiver to receive the digital IF signal, in which the interference monitoring component is configured to monitor at least one sub-band in the digital IF signal for interference, in which the at least one sub-band does not include a radar signal.

公开(公告)号：US10067221B2

公开(公告)日：2018-09-04

申请号：US14679461

申请日：2015-04-06

Applicant: Texas Instruments Incorporated

Inventor： Brian Paul Ginsburg ,  Karthik Subburaj ,  Karthik Ramasubramanian ,  Sachin Bhardwaj ,  Sriram Murali ,  Sandeep Rao

IPC: G01S7/35 ,  G01S7/40 ,  G01S13/32 ,  G01S13/93 ,  G01S7/02 ,  G01S13/00

Abstract: A frequency modulated continuous wave (FMCW) radar system is provided that includes a receiver configured to generate a digital intermediate frequency (IF) signal, and an interference monitoring component coupled to the receiver to receive the digital IF signal, in which the interference monitoring component is configured to monitor at least one sub-band in the digital IF signal for interference, in which the at least one sub-band does not include a radar signal.

公开(公告)号：US09383209B2

公开(公告)日：2016-07-05

申请号：US14034486

申请日：2013-09-23

Applicant: Texas Instruments Incorporated

Inventor： Sachin Bhardwaj ,  Sriram Murali ,  Jaiganesh Balakrishnan ,  Jayawardan Janardhanan ,  Yogesh Shekar ,  Goutam Dutta

IPC: G01C21/16 ,  G01C21/20

CPC classification number: G01C21/165 ,  G01C21/16 ,  G01C21/20

Abstract: According to an aspect of the present disclosure, the relative attitude between an inertial measurement unit (IMU), present on a mobile device, and the frame of reference of the vehicle carrying mobile device is estimated. The estimated relative attitude is used to translate the IMU measurement to the vehicle frame of reference to determine the velocity and position of the vehicle. As a result, the vehicle position and velocity are determined accurately in the event of undocking and re-docking of the mobile device from a docking system in the vehicle. The relative attitude is estimated in terms of pitch, roll, and yaw angles.

Abstract translation: 根据本公开的一个方面，估计出现在移动设备上的惯性测量单元（IMU）与携带移动设备的车辆的参考系之间的相对姿态。 估计的相对姿态用于将IMU测量值转换为车辆参考系，以确定车辆的速度和位置。 结果，在移动设备从车辆中的对接系统脱离和重新对接的情况下，准确地确定车辆位置和速度。 根据俯仰角，俯仰角和偏航角估计相对姿态。

公开(公告)号：US20150249907A1

公开(公告)日：2015-09-03

申请号：US14194449

申请日：2014-02-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Pankaj Gupta ,  Sthanunathan Ramakrishnan ,  Jaiganesh Balakrishnan ,  Sachin Bhardwaj

IPC: H04W4/04

CPC classification number: H04W4/043

Abstract: Several systems and methods for location estimation in a multi-floor environment are disclosed. In an embodiment, the method includes performing wireless scanning so as to receive wireless signals from one or more access points from among a plurality of access points positioned at plurality of locations, respectively at one or more floors from among a plurality of floors within the multi-floor environment. A first set of RSSI measurements is computed corresponding to the wireless signals. Absolute floor location information is determined based on the first set of RSSI measurements and a pre-defined objective function. The pre-defined objective function is configured to maximize a probability of a user being located at a floor so as to receive the wireless signals. A user floor location is determined based on the absolute floor location information. The user location is estimated at least in part based on the user floor location.

Abstract translation: 公开了用于多层环境中的位置估计的几种系统和方法。 在一个实施例中，该方法包括执行无线扫描，以便从位于多个接入点内的多个接入点中的多个接入点接收无线信号，所述多个接入点分别位于多个接入点内的多个接入点 - 地板环境。 对应于无线信号计算第一组RSSI测量。 基于第一组RSSI测量和预定义的目标函数来确定绝对楼层位置信息。 预定义的目标函数被配置为最大化用户位于楼层的概率以便接收无线信号。 基于绝对楼层位置信息确定用户楼层位置。 至少部分地基于用户楼层位置来估计用户位置。