公开(公告)号：US20200260406A1

公开(公告)日：2020-08-13

申请号：US16862426

申请日：2020-04-29

Applicant: NextNav, LLC

Inventor： Ganesh PATTABIRAMAN ,  Deepak JOSEPH

IPC: H04W64/00 ,  H04B7/06 ,  H04B7/0413 ,  H04B7/0452 ,  H04W52/02 ,  H04W4/029 ,  G01S5/02 ,  H04W4/021

Abstract: Determining if a receiver is inside or outside a building or area. Particular systems and methods for determining if a receiver is inside or outside a building determine an estimate of a position of a receiver, and use the estimate of the position of the receiver and other data to determine if the position of the receiver is inside a first building. The other data may include locations of geo-fences inside buildings, heights of buildings, or other types of data.

公开(公告)号：US20240118081A1

公开(公告)日：2024-04-11

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 ,  G01S19/14

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

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：US20160127329A1

公开(公告)日：2016-05-05

申请号：US14991940

申请日：2016-01-09

Applicant: NextNav, LLC

Inventor： Arun RAGHUPATHY ,  Subramanian S. MEIYAPPAN ,  Deepak JOSEPH ,  Varaprasad VAJJHALA

IPC: H04L29/06 ,  H04W12/08

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.

Abstract translation: 控制在接收机或接收机外部的另一个设备上的位置信息的访问。 可以使用包括所请求的服务类型，用户类型，设备类型，软件应用程序类型，支付和/或与该软件应用程序的特定软件应用程序或分发者相关联的其他特征的各种考虑事项来控制对 位置信息。

公开(公告)号：US20180234939A1

公开(公告)日：2018-08-16

申请号：US15952600

申请日：2018-04-13

Applicant: NextNav, LLC

Inventor： Ganesh PATTABIRAMAN ,  Deepak JOSEPH

IPC: H04W64/00 ,  G01S5/02 ,  H04W52/02 ,  H04W4/029 ,  H04W52/28 ,  H04W4/33 ,  H04W4/021

Abstract: Determining if a receiver is inside or outside a building or area. Particular systems and methods for determining if a receiver is inside or outside a building determine an estimate of a position of a receiver, and use the estimate of the position of the receiver and other data to determine if the position of the receiver is inside a first building. The other data may include locations of geo-fences inside buildings, heights of buildings, or other types of data.

公开(公告)号：US20170363423A1

公开(公告)日：2017-12-21

申请号：US15692142

申请日：2017-08-31

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 ,  G01C21/10

CPC classification number: G01C17/38 ,  G01C5/06 ,  G01C21/10 ,  G01C21/165 ,  G01C25/00 ,  G01C25/005 ,  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：US20230384097A1

公开(公告)日：2023-11-30

申请号：US18363329

申请日：2023-08-01

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

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

Abstract: Calibrating a pressure sensor of a mobile device includes determining a first plurality of calibration values for a first plurality of visits to a first revisit zone to which a mobile device repeatedly returns; determining a first relative calibration adjustment value based on the first plurality of calibration values; determining an adjusted absolute calibration value based on i) an absolute calibration value used to calibrate pressure measurements made by a pressure sensor of the mobile device, and ii) the first relative calibration adjustment value; and calibrating pressure measurements made by the pressure sensor of the mobile device using the adjusted absolute calibration value.

公开(公告)号：US20220136830A1

公开(公告)日：2022-05-05

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 ,  G01C21/10 ,  G01S19/14 ,  G01C5/06 ,  G01C21/16 ,  G01S5/02 ,  G01C25/00 ,  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：US20220099444A1

公开(公告)日：2022-03-31

申请号：US17644029

申请日：2021-12-13

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

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.