System architecture of low-orbit navigation enhancement system

A technology for enhancing system and architecture, applied in the field of satellite navigation, can solve the problems of fast movement speed, high system construction cost, restricting the construction and promotion of low-orbit navigation augmentation system, etc., and achieve the effect of reducing construction cost and simplifying implementation complexity.

Pending Publication Date: 2021-10-01
湖南跨线桥航天科技有限公司
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Problems solved by technology

However, due to the large number of low-orbit constellation satellites, the fast movement speed, and the short visible arc, in order to establish and maintain a continuous and stable satellite-ground communication link, hi

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  • System architecture of low-orbit navigation enhancement system
  • System architecture of low-orbit navigation enhancement system

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Embodiment Construction

[0016] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0017] Compared with the GNSS system, the low-orbit navigation augmentation system has the following two characteristics: First, the low-orbit satellite navigation signal uses a high message rate modulation method, which can directly broadcast the satellite-borne GNSS observation data through the downlink navigation signal without additional Second, in the typical application scenario of the low-orbit navigation augmentation system, ground users can easily obtain the precise ephemeris data of low-orbit satellites through the mobile communication link without the need to Demodulate the precise ephemeris from the downlink navigation signal of the lo...

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Abstract

The invention discloses a system architecture of a low-orbit navigation enhancement system, which comprises a low-orbit satellite constellation, a ground operation control system and a user side. The ground operation control system comprises a main control station and a monitoring station; a low-orbit satellite-borne GNSS receiver receives a GNSS navigation signal and modulates observation data into a low-orbit navigation signal; the monitoring station which receives a low-orbit navigation signal to obtain the observed quantity of the ground to a low-orbit satellite and demodulates a navigation message to obtain the satellite-borne GNSS observed quantity, and the master control station estimates an orbit and a star clock of the low-orbit satellite by using the satellite-borne and ground observed quantity, arranges a precise ephemeris into a message according to a specific format, and uploads the message to the Internet; and the user side obtains the precise ephemeris through the mobile communication network, and finally high-precision positioning is completed. According to the system architecture provided by the invention, a satellite-ground communication link does not need to be established between the low-orbit satellite and the ground operation and control system, so that the implementation complexity of the satellite load is greatly simplified, and the construction cost of the ground operation and control system is reduced.

Description

technical field [0001] The present invention relates to the technical field of satellite navigation, and more specifically, relates to an architecture of a low-orbit navigation augmentation system. Background technique [0002] The traditional architecture of the low-orbit navigation augmentation system consists of the following five parts: 1. Low-orbit satellites: receive GNSS navigation signals, and transmit observation data to ground monitoring stations through satellite downlink communication links; at the same time receive ground injection stations The uploaded message data is modulated into the low-orbit navigation signal and then broadcast to the ground; multiple low-orbit satellites distributed in multiple orbital planes form a low-orbit navigation constellation to achieve multiple coverage of the world or specific areas; 2. Monitoring stations : Receive GNSS navigation satellites and low-orbit navigation signals, and transmit observation data to the main control sta...

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Application Information

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IPC IPC(8): G01S19/24G01S19/42
CPCG01S19/243G01S19/42
Inventor 赵鹏苏畅马力鲁志勇
Owner 湖南跨线桥航天科技有限公司
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