公开(公告)号：US09915736B2

公开(公告)日：2018-03-13

申请号：US14601412

申请日：2015-01-21

Applicant: Trimble Inc.

Inventor： Kendall Ferguson

IPC: G01S19/07 ,  G01S19/44 ,  G01S19/04 ,  G01S19/43

CPC classification number: G01S19/44 ,  G01S19/04 ,  G01S19/07 ,  G01S19/43

Abstract: A navigation satellite system, one or more NSS reference station is set out for providing information to one or more rover receivers. The NSS reference station comprises a processing unit configured to determine one or more first range intervals representing first ambiguity windows based on estimated atmospheric effects, and determine one or more second range intervals representing a second ambiguity window smaller than each of the first ambiguity windows based on uncertainties of range measurements within a predetermined previous period. The NSS reference station further comprises a transmission unit configured to transmit, to the NSS rover receivers, first messages each comprising a modulo a first ambiguity window, and transmission of two first messages, to range measurement transmit between the NSS rover receiver, a plurality of second messages, each second message comprising a range measurement modulo one of the second ambiguity windows.

公开(公告)号：US10408941B2

公开(公告)日：2019-09-10

申请号：US15643923

申请日：2017-07-07

Applicant: Trimble Inc.

Inventor： Xiaoming Chen ,  Ulrich Vollath ,  Kendall Ferguson

IPC: G01S19/04 ,  G01S19/07 ,  G01S19/32 ,  G01S19/44 ,  G01S19/02 ,  G01S1/00 ,  G01S19/40 ,  G01S19/43 ,  G01S19/41

Abstract: A correction message for regional GNSS data includes at least one network message and at least one cluster message. The at least one network message relates to stations of a network of stations within a region. The at least one cluster message relates to a subset of stations within the region. Network elements are extracted from the network message and cluster elements are extracted from the cluster message. Network elements and cluster elements are used to determine a position of a rover within the region.

公开(公告)号：US20170307760A1

公开(公告)日：2017-10-26

申请号：US15643923

申请日：2017-07-07

Applicant: Trimble Inc.

Inventor： Xiaoming Chen ,  Ulrich Vollath ,  Kendall Ferguson

IPC: G01S19/04 ,  G01S19/32 ,  G01S19/07 ,  G01S19/44 ,  G01S19/43 ,  G01S1/00 ,  G01S5/14 ,  G01S19/02 ,  G01S19/41 ,  G01S19/40

CPC classification number: G01S19/04 ,  G01S1/00 ,  G01S19/02 ,  G01S19/07 ,  G01S19/32 ,  G01S19/40 ,  G01S19/41 ,  G01S19/43 ,  G01S19/44

Abstract: A correction message for regional GNSS data includes data from several stations in a network. The correction message has at least one cluster message. The cluster message contains cluster elements relating to a subset of GNSS stations.

公开(公告)号：US10761213B2

公开(公告)日：2020-09-01

申请号：US15882782

申请日：2018-01-29

Applicant: Trimble Inc.

Inventor： Kendall Ferguson

IPC: G01S19/07 ,  G01S19/04 ,  G01S19/43

Abstract: A navigation satellite system, one or more NSS reference station is set out for providing information to one or more rover receivers. The NSS reference station comprises a processing unit configured to determine one or more first range intervals representing first ambiguity windows based on estimated atmospheric effects, and determine one or more second range intervals representing a second ambiguity window smaller than each of the first ambiguity windows based on uncertainties of range measurements within a predetermined previous period. The NSS reference station further comprises a transmission unit configured to transmit, to the NSS rover receivers, first messages each comprising a modulo a first ambiguity window, and transmission of two first messages, to range measurement transmit between the NSS rover receiver, a plurality of second messages, each second message comprising a range measurement modulo one of the second ambiguity windows.

公开(公告)号：US20180164443A1

公开(公告)日：2018-06-14

申请号：US15882782

申请日：2018-01-29

Applicant: Trimble Inc.

Inventor： Kendall Ferguson

IPC: G01S19/44 ,  G01S19/04 ,  G01S19/07

Abstract: A navigation satellite system, one or more NSS reference station is set out for providing information to one or more rover receivers. The NSS reference station comprises a processing unit configured to determine one or more first range intervals representing first ambiguity windows based on estimated atmospheric effects, and determine one or more second range intervals representing a second ambiguity window smaller than each of the first ambiguity windows based on uncertainties of range measurements within a predetermined previous period. The NSS reference station further comprises a transmission unit configured to transmit, to the NSS rover receivers, first messages each comprising a modulo a first ambiguity window, and transmission of two first messages, to range measurement transmit between the NSS rover receiver, a plurality of second messages, each second message comprising a range measurement modulo one of the second ambiguity windows.