公开(公告)号：US20230221203A1

公开(公告)日：2023-07-13

申请号：US18152228

申请日：2023-01-10

Applicant: NextNav, LLC

Inventor： Michael DORMODY ,  Deepak Joseph ,  Badrinath NAGARAJAN ,  Arun RAGHUPATHY ,  Frank Yenshaw

IPC: G01L27/00 ,  G01S5/02

CPC classification number: G01L27/005 ,  G01S5/0295

Abstract: An alert indicates that a situation conducive to calibrating a barometric pressure sensor of the user device might have occurred. In response, calibration data is collected for calibrating the barometric pressure sensor. The calibration data is used to perform a calibration process and generate a calibration value for the barometric pressure sensor.

公开(公告)号：US11199406B2

公开(公告)日：2021-12-14

申请号：US16684859

申请日：2019-11-15

Applicant: NextNav, LLC

Inventor： Michael Dormody ,  Ganesh Pattabiraman ,  Abijith Kumar ,  Thomas Wolf ,  Gary Parsons ,  Christian Gates ,  Deepak Joseph ,  Badrinath Nagarajan

IPC: G01C17/38 ,  G01C25/00 ,  G01C5/06 ,  G01S5/02 ,  G01C21/16 ,  G01S19/14 ,  G01C21/10 ,  G01S19/40

Abstract: Calibrating an unstable sensor of a mobile device. Systems and methods for calibrating a sensor of a mobile device determine a first estimated position of the mobile device without using any measurement from the sensor of the mobile device, generate a second estimated position of the mobile device using a measurement from the sensor, estimate a sensor error of the sensor using the first estimated position and the second estimated position, and use the sensor error to determine a calibration value for adjusting one or more measurements from the sensor.

公开(公告)号：US09326105B2

公开(公告)日：2016-04-26

申请号：US14207210

申请日：2014-03-12

Applicant: NextNav, LLC

Inventor： Ganesh Pattabiraman ,  Deepak Joseph

IPC: H04W24/00 ,  H04W4/04 ,  H04W4/02 ,  H04W52/02 ,  H04W64/00 ,  G01S5/02

CPC classification number: H04W64/006 ,  G01S5/0252 ,  G01S5/0257 ,  H04W4/021 ,  H04W4/029 ,  H04W4/043 ,  H04W4/33 ,  H04W52/0209 ,  H04W52/0251 ,  H04W52/283 ,  H04W64/00 ,  H04W64/003 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/26

Abstract: Described are systems and methods for acquiring three-dimensional location information. Also described are systems and methods for using the acquired three-dimension location information to locate users and enhance their experience in relation to location-based services.

Abstract translation: 描述了用于获取三维位置信息的系统和方法。 还描述了使用获取的三维位置信息来定位用户并增强与基于位置的服务相关的体验的系统和方法。

公开(公告)号：US12228402B2

公开(公告)日：2025-02-18

申请号：US18539991

申请日：2023-12-14

Applicant: NextNav, LLC

Inventor： Michael Dormody ,  Ganesh Pattabiraman ,  Abijith Kumar ,  Thomas Wolf ,  Gary Parsons ,  Christian Gates ,  Deepak Joseph ,  Badrinath Nagarajan

IPC: G01C17/38 ,  G01C5/06 ,  G01C21/10 ,  G01C21/16 ,  G01C25/00 ,  G01S5/00 ,  G01S5/02 ,  G01S19/14 ,  G01S19/40

Abstract: Calibrating an unstable sensor of a mobile device. Systems and methods for calibrating a sensor of a mobile device determine a first estimated position of the mobile device without using any measurement from the sensor of the mobile device, generate a second estimated position of the mobile device using a measurement from the sensor, estimate a sensor error of the sensor using the first estimated position and the second estimated position, and use the sensor error to determine a calibration value for adjusting one or more measurements from the sensor.

公开(公告)号：US11761765B2

公开(公告)日：2023-09-19

申请号：US17647826

申请日：2022-01-12

Applicant: NextNav, LLC

Inventor： Michael Dormody ,  Deepak Joseph ,  Badrinath Nagarajan ,  Guiyuan Han ,  Arun Raghupathy

IPC: G01C17/38 ,  G01C25/00 ,  G01C5/06 ,  G01S5/02 ,  G01C21/16 ,  G01S19/14 ,  G01C21/10 ,  G01S19/40

CPC classification number: G01C17/38 ,  G01C5/06 ,  G01C21/10 ,  G01C21/165 ,  G01C25/00 ,  G01C25/005 ,  G01S5/02 ,  G01S19/14 ,  G01S19/40

Abstract: Calibrating a pressure sensor of a mobile device incudes determining an absolute calibration value used to calibrate pressure measurements by a pressure sensor of a mobile device; determining a first revisit zone as a first location to which the mobile device repeatedly returns; determining first and second calibrations for first and second visits to the first revisit zone; determining a first relative calibration adjustment value based on a difference between the first and second calibrations; determining an adjusted absolute calibration value based on a sum of the absolute calibration value and the first relative calibration adjustment value; and estimating an altitude of the mobile device based on a pressure measurement by the pressure sensor and the adjusted absolute calibration value.

公开(公告)号：US20230273049A1

公开(公告)日：2023-08-31

申请号：US17823135

申请日：2022-08-30

Applicant: NextNav, LLC

Inventor： Michael DORMODY ,  Arun RAGHUPATHY ,  Badrinath NAGARAJAN ,  Frank Yenshaw ,  Deepak Joseph

IPC: G01C25/00 ,  G01C5/06

CPC classification number: G01C25/00 ,  G01C5/06

Abstract: Device-based barometric pressure sensor calibration involves determining a specific location of the mobile device; determining a general location of the mobile device that encompasses and obfuscates the specific location; transmitting the general location to a server; receiving general calibration data for the general location; determining specific calibration data based on the general calibration data and the specific location; determining a calibration value based on the specific calibration data, the calibration value being for calibrating the barometric pressure sensor.

公开(公告)号：USD952672S1

公开(公告)日：2022-05-24

申请号：US29732468

申请日：2020-04-24

Applicant: NextNav, LLC

Designer： John Ashenden ,  Deepak Joseph ,  Robert Rovetta ,  Frank Yenshaw

公开(公告)号：US09998874B2

公开(公告)日：2018-06-12

申请号：US15276486

申请日：2016-09-26

Applicant: NextNav, LLC

Inventor： Andrew Sendonaris ,  Arun Raghupathy ,  Deepak Joseph

IPC: H04W4/02 ,  G01S5/02 ,  H04W4/04 ,  G01C5/06 ,  G01S19/42

CPC classification number: H04W4/025 ,  G01C5/06 ,  G01S5/0252 ,  G01S19/42 ,  H04W4/04 ,  H04W4/30

Abstract: Using estimates of a receiver's altitude to determine where a receiver is located and to refine a positioning system's estimate of a receiver's position. Systems and methods determine whether a receiver is inside or outside a building, and may use the determination to confirm or adjust an initial estimate of the receiver's position. Various approaches for making the determination and for assessing the initial estimate of the receiver's position are described.

公开(公告)号：US09980246B2

公开(公告)日：2018-05-22

申请号：US15072831

申请日：2016-03-17

Applicant: NextNav, LLC

Inventor： Ganesh Pattabiraman ,  Deepak Joseph

IPC: H04W24/00 ,  H04W64/00 ,  H04W4/04 ,  H04W4/02 ,  H04W52/02 ,  G01S5/02 ,  H04W52/28

CPC classification number: H04W64/006 ,  G01S5/0252 ,  G01S5/0257 ,  H04W4/021 ,  H04W4/029 ,  H04W4/043 ,  H04W4/33 ,  H04W52/0209 ,  H04W52/0251 ,  H04W52/283 ,  H04W64/00 ,  H04W64/003 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/26

Abstract: Acquiring three-dimensional location information, and using acquired three-dimension location information to locate users and enhance their experience in relation to location-based services.

公开(公告)号：US09787649B2

公开(公告)日：2017-10-10

申请号：US14991940

申请日：2016-01-09

Applicant: NextNav, LLC

Inventor： Arun Raghupathy ,  Subramanian S. Meiyappan ,  Deepak Joseph ,  Varaprasad Vajjhala

IPC: H04K1/00 ,  H04L9/00 ,  H04L29/06 ,  G06F21/62 ,  H04W4/02 ,  H04W12/08 ,  H04L29/08

CPC classification number: H04L63/0428 ,  G06F21/6245 ,  G06F21/629 ,  G06F2221/2111 ,  G06F2221/2113 ,  H04L29/08657 ,  H04L63/08 ,  H04L63/105 ,  H04L63/123 ,  H04W4/02 ,  H04W12/08

Abstract: Controlling access to position information at a receiver, or at another device external to the receiver. Various considerations, including a requested service type, a user type, a device type, a software application type, a payment, and/or other characteristics associated with a particular software application or distributor of that software application, may be used to control access to position information.