公开(公告)号：US10921459B2

公开(公告)日：2021-02-16

申请号：US16677996

申请日：2019-11-08

Applicant: Topcon Positioning Systems, Inc.

Inventor： Andrey Vladimirovich Veitsel ,  Leonid Victorovich Purto ,  Alexey Stanislavovich Lebedinsky ,  Dmitry Anatolievich Rubtsov

IPC: G01S19/24 ,  G01S19/27 ,  G01S19/30 ,  G01S19/02

Abstract: GNSS receiver includes first type correlators and a maximum selecting unit selecting an output from the first type correlators, and with a common control of all the correlators in code delay, carrier phase and carrier frequency; second type correlators with individual control in code delay of each correlator or each sub-group of second type correlators and with common control of all second type correlators in carrier phase and frequency; and a processor. The first type correlators can convolve one quadrature only, and demodulates CSK symbols, the second type correlators calculate discriminator values for CSK-modulated signal DLL, the demodulated data then is used by the processor to produce improved position and velocity.

公开(公告)号：US11287532B2

公开(公告)日：2022-03-29

申请号：US16343899

申请日：2018-11-13

Applicant: Topcon Positioning Systems, Inc.

Inventor： Nikolay Nikolaevich Vasilyuk ,  Andrey Vladimirovich Veitsel ,  Sergey Ivanovich Tychinskiy ,  Alexandr Vladimirovich Doronin ,  Alexey Stanislavovich Lebedinsky ,  Konstantin Viktorovich Ebauer

IPC: G01S19/23 ,  G04F10/00

Abstract: GNSS timing receiver with synchronization of raw GNSS measurements to an external timescale. Synchronization is achieved by using a hardware Time Interval Measurement Unit (TIMU). The TIMU measures time intervals between two pulse signals and makes additional processing of these measurements. The first pulse signal is generated inside the GNSS receiver. The second pulse signal is the external pulse signal generated by an external time reference device. This time interval is used to control the time instant when the output GNSS measurement will be taken. In the first embodiment all actual GNSS measurements are physically taken at time instants indicated by external pulse signal. These measurements are used as output GNSS measurements. In another embodiment all actual GNSS measurements are taken at their default time instants indicated by internal pulse signal. But output GNSS measurements are calculated at the time instants indicated by the external pulse signal.

公开(公告)号：US10976442B1

公开(公告)日：2021-04-13

申请号：US16976338

申请日：2020-01-28

Applicant: Topcon Positioning Systems, Inc.

Inventor： Mark Isaakovich Zhodzishsky ,  Ilya Vladimirovich Ivantsov ,  Roman Valerievich Kurynin ,  Alexey Stanislavovich Lebedinsky ,  Vladimir Victorovich Beloglazov

IPC: G01S19/33 ,  G01S19/37

Abstract: A method and apparatus are provided for processing navigation signals with improved stability in a multi-frequency, multi-system environment. Satellite signals, which are transmitted by a plurality of satellites from a plurality of different global navigation satellite systems, are received on a common radio path and processed in separate digital satellite channels, with each of the separate digital satellite channels corresponding to a respective satellite signal. A common quartz-locked-loop (QLL) discriminator signal is generated based on correlation signals from each of the separate digital satellite channels. Based on the common QLL discriminator signal, guiding signals are generated, with each of the guiding signals corresponding to a respective one of the separate digital satellite channels, for reducing phase-related tracking errors in the respective satellite signal processed in its corresponding digital satellite channel.