公开(公告)号：US10514258B2

公开(公告)日：2019-12-24

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 ,  G01C21/10 ,  G01C25/00 ,  G01C5/06 ,  G01C21/16 ,  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：US11892295B2

公开(公告)日：2024-02-06

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 ,  G01C21/16 ,  G01S19/14 ,  G01C21/10 ,  G01S5/02 ,  G01S19/40 ,  G01S5/00

CPC classification number: G01C17/38 ,  G01C5/06 ,  G01C21/10 ,  G01C21/165 ,  G01C25/00 ,  G01C25/005 ,  G01S19/14 ,  G01S5/012 ,  G01S5/017 ,  G01S5/02 ,  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：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：US09629111B2

公开(公告)日：2017-04-18

申请号：US14198258

申请日：2014-03-05

Applicant: Telcom Ventures, LLC ,  NextNav, LLC

Inventor： Rajendra Singh ,  George Ron Olexa ,  Gary Parsons

IPC: H04W64/00 ,  H04W56/00 ,  G01S5/02

CPC classification number: H04W56/0015 ,  G01S5/021 ,  H04W56/0055 ,  H04W64/00

Abstract: Methods of operating a position network center, which includes at least one server, may include receiving timing-error data corresponding to a plurality of unsynchronized or loosely synchronized transmitters from at least one position network receiver. Moreover, the methods may include transmitting data indicating a plurality of timing errors by the plurality of unsynchronized or loosely synchronized transmitters to a wireless user device that receives signals from the plurality of unsynchronized or loosely synchronized transmitters. Related position network centers, position network receivers, and wireless user devices are also described.

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：US20140254582A1

公开(公告)日：2014-09-11

申请号：US14198258

申请日：2014-03-05

Applicant: NextNav, LLC ,  Telcom Ventures, LLC

Inventor： Rajendra Singh ,  George Ron Olexa ,  Gary Parsons

IPC: H04W56/00

CPC classification number: H04W56/0015 ,  G01S5/021 ,  H04W56/0055 ,  H04W64/00

Abstract: Methods of operating a position network center, which includes at least one server, may include receiving timing-error data corresponding to a plurality of unsynchronized or loosely synchronized transmitters from at least one position network receiver. Moreover, the methods may include transmitting data indicating a plurality of timing errors by the plurality of unsynchronized or loosely synchronized transmitters to a wireless user device that receives signals from the plurality of unsynchronized or loosely synchronized transmitters. Related position network centers, position network receivers, and wireless user devices are also described.

Abstract translation: 包括至少一个服务器的位置网络中心的操作方法可以包括从至少一个位置网络接收器接收对应于多个不同步或松散同步的发射机的定时错误数据。 此外，所述方法可以包括将指示多个定时误差的数据通过所述多个非同步或松散同步的发射机发射到从所述多个不同步或松散同步的发射机接收信号的无线用户设备。 还描述了相关位置网络中心，位置网络接收机和无线用户设备。