公开(公告)号：US20230003906A1

公开(公告)日：2023-01-05

申请号：US17379958

申请日：2021-07-19

申请人： Beken Corporation

发明人： Dawei GUO ,  Pengfei Zhang

IPC分类号： G01S19/42

摘要： A PVT calculation device includes a memory; and one or more processors in communication with the memory configured to perform operations including: receiving observations and ephemerides from satellites to obtain PVT data of the satellites and predicted PVT results of the receiver; setting up observation functions respectively corresponding to the satellites; calculating by a least square solution first estimated PVT results of the receiver based on the observation functions; iteratively eliminating by a Random-Sampling Iterative Kalman Filter (RSIKF) algorithm fault observation functions from the observation functions in an inner cluster until no fault observation functions detected in the inner cluster; calculating by the RSIKF algorithm a second estimated PVT results of the receiver using the observation functions in the inner cluster; and outputting final estimated PVT results of the receiver. The PVT calculation device may calculate the PVT results of the receiver with improved accuracy and stability.

公开(公告)号：US11474260B1

公开(公告)日：2022-10-18

申请号：US17304098

申请日：2021-06-14

申请人： Beken Corporation

发明人： Weifeng Wang ,  Jiazhou Liu ,  Pengfei Zhang ,  Dawei Guo

IPC分类号： G01S19/30 ,  G01S19/37 ,  G01S19/29 ,  H03K19/21

摘要： A Weil code generator and a method of generating Weil codes with a Weil code length (N) are provided. The Weil code generator includes a plurality of parallel channels (10), a multi-channel read arbiter (20), and two parallel Legendre ROMs (30), which are connected in series. A channel of the plurality of channels stores a current Weil code to demodulate signals from a satellite. The multi-channel read arbiter (20) may determine a win channel from the plurality of channels. The two Legendre ROMs (30) respectively store a first and a second Legendre sequences (LS1, LS2) each having a Legendre sequence length (2N) being double the Weil code length (N). The Weil code generator may generate Weil codes efficiently.

公开(公告)号：US11662476B2

公开(公告)日：2023-05-30

申请号：US17379958

申请日：2021-07-19

申请人： Beken Corporation

发明人： Dawei Guo ,  Pengfei Zhang

IPC分类号： G01S19/42 ,  G01S19/52 ,  G01S19/40 ,  G01S19/44

CPC分类号： G01S19/42 ,  G01S19/40 ,  G01S19/52 ,  G01S19/44

摘要： A PVT calculation device includes a memory; and one or more processors in communication with the memory configured to perform operations including: receiving observations and ephemerides from satellites to obtain PVT data of the satellites and predicted PVT results of the receiver; setting up observation functions respectively corresponding to the satellites; calculating by a least square solution first estimated PVT results of the receiver based on the observation functions; iteratively eliminating by a Random-Sampling Iterative Kalman Filter (RSIKF) algorithm fault observation functions from the observation functions in an inner cluster until no fault observation functions detected in the inner cluster; calculating by the RSIKF algorithm a second estimated PVT results of the receiver using the observation functions in the inner cluster; and outputting final estimated PVT results of the receiver. The PVT calculation device may calculate the PVT results of the receiver with improved accuracy and stability.