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GNSS (Global Navigation Satellite System) receiver-based time service method and GNSS (Global Navigation Satellite System) receiver

A receiver and time technology, applied in the field of satellite timing, can solve the problem that the output accuracy of PPS does not meet the requirements, etc.

Active Publication Date: 2019-04-16
UNICORE COMM INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the PPS output accuracy of mainstream GNSS receivers currently on the market does not meet the requirements

Method used

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  • GNSS (Global Navigation Satellite System) receiver-based time service method and GNSS (Global Navigation Satellite System) receiver
  • GNSS (Global Navigation Satellite System) receiver-based time service method and GNSS (Global Navigation Satellite System) receiver
  • GNSS (Global Navigation Satellite System) receiver-based time service method and GNSS (Global Navigation Satellite System) receiver

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Embodiment Construction

[0019] Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0020] The steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0021] figure 1 It is a schematic diagram of the principle of the timing GNSS receiver. like figure 1 As shown, after the time service GNSS receiver receives the GNSS satellite signal through the antenna, it can perform pre-amplification, down-conversion and analog-to-digital (A / D) conversion processing on the received satellite signal, so as to convert ...

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Abstract

The present invention discloses a GNSS (Global Navigation Satellite System) receiver-based time service method and a GNSS (Global Navigation Satellite System) receiver. The time service method includes the following steps that: the PVT local time of one or more navigation systems and local clock drift data are obtained through PVT operation; the PPS of whole-second time corresponding to the PVT operation completion time of the current PVT operation is obtained; and the difference value of the PVT local time of any one navigation system which is obtained through the current PVT operation and the PPS of the whole-second time is calculated, and the difference value is corrected with the local clock drift data which are obtained through the current PVT operation, and the PPS of the next secondis outputted according to the difference value.

Description

technical field [0001] The present application relates to but not limited to the technical field of satellite timing, especially a timing method based on a Global Navigation Satellite System (GNSS) receiver and a GNSS receiver. Background technique [0002] The Global Navigation Satellite System (GNSS) currently consists of four major systems: the US Global Positioning System (GPS, Global Positioning System), Russia's GLONASS, China's BeiDou, and the European Union's Galileo. Provide all-day, large-scale, long-term continuous real-time high-precision positioning, speed measurement and timing services to users in near-Earth space. The GNSS receiver used to output PulsePer Second (PPS) is to use GNSS satellite signals for position, velocity and time (PositionVelocity and Time, PVT) calculations, and then adjust the local second pulse by filtering and fitting methods Phase, so as to accurately output the PPS signal. [0003] GNSS receivers currently used to output second puls...

Claims

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Application Information

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IPC IPC(8): G04R20/04
CPCG04R20/04
Inventor 栾超赵娜孙峰陈杰李丽媛
Owner UNICORE COMM INC
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