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：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.

公开(公告)号：US20240151858A1

公开(公告)日：2024-05-09

申请号：US18495490

申请日：2023-10-26

Applicant: NextNav, LLC

Inventor： Arun RAGHUPATHY ,  Sameet DESHPANDE ,  Payam DEHGHANI RAHIMZADEH ,  Ganesh PATTABIRAMAN

IPC: G01S19/39 ,  G01S19/40

CPC classification number: G01S19/393 ,  G01S19/40

Abstract: A method includes a mobile device receiving a plurality of first signals from one or more first transmitters in a network. Each first signal has first data including an associated time that is non-synchronized to the time of another first signal of the plurality of first signals. One or more processors synchronizes the associated time of each first signal to a common time scale. One or more processors determines a position of the mobile device using a common time scale of the plurality of first signals.

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：US20230308130A1

公开(公告)日：2023-09-28

申请号：US18324830

申请日：2023-05-26

Applicant: NextNav, LLC

Inventor： Arun RAGHUPATHY ,  Ganesh PATTABIRAMAN ,  Subramanian S. MEIYAPPAN ,  Hari SANKAR

IPC: H04B1/7087 ,  G01S19/11 ,  H04W72/30 ,  H04W72/51 ,  G01S19/46 ,  G01S5/10 ,  G01S1/08 ,  G01S19/24 ,  G01S19/42 ,  H04B7/26 ,  H04W72/0446 ,  H04B1/709

CPC classification number: H04B1/7087 ,  G01S19/11 ,  H04W72/30 ,  H04W72/51 ,  G01S19/46 ,  G01S5/10 ,  G01S1/08 ,  G01S19/24 ,  G01S19/42 ,  H04B7/2618 ,  H04W72/0446 ,  H04B1/709 ,  H04B2201/7073 ,  H04W56/005

Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.

公开(公告)号：US20210409066A1

公开(公告)日：2021-12-30

申请号：US17446583

申请日：2021-08-31

Applicant: NextNav, LLC

Inventor： Arun RAGHUPATHY ,  Ganesh PATTABIRAMAN ,  Subramanian S. MEIYAPPAN ,  Hari SANKAR

IPC: H04B1/7087 ,  G01S19/11 ,  G01S19/46 ,  G01S5/10 ,  G01S1/08 ,  G01S19/24 ,  G01S19/42 ,  H04B7/26 ,  H04W72/00 ,  H04W72/04 ,  H04B1/709

Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.

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.