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Correction number transmission method and system

A transmission method and transmission system technology, which is applied in the field of correction data transmission, can solve the problems of not being able to meet the requirements of real-time performance and low delay, and achieve the effect of improving the terminal's high-precision positioning and real-time correction correction, improving accuracy, Effect of Optimizing Propagation Delay

Active Publication Date: 2020-12-29
QIANXUN SPATIAL INTELLIGENCE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the existing large correction delays unable to meet the low-latency requirements of fields with high real-time requirements (such as automatic driving, drones, etc.)

Method used

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  • Correction number transmission method and system
  • Correction number transmission method and system
  • Correction number transmission method and system

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Embodiment Construction

[0082] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that the technical solutions claimed in this application can be realized even without these technical details and various changes and modifications based on the following implementation modes.

[0083] Explanation of some concepts:

[0084] Correction delay: refers to the time required for the original observation data from the base station network to be processed to generate correction data products and then transmitted to the user terminal via satellite. It includes sending delay, propagation delay, processing delay, queuing delay and so on.

[0085] Algorithm scheduling: Used to decide which algorithm to run at a certain point in time.

[0086] False alarm rate: When there is no fault in the system, the probability that the system is considered to be faulty and an alarm is issued by mista...

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Abstract

The invention relates to the field of satellite positioning, and discloses a correction number transmission method and system. The correction number transmission method comprises the steps that a broadcasting platform determines the size of a data packet of a correction number sent to a satellite uplink according to a predetermined correction number time delay requirement, the broadcasting platform packages the correction number according to the size of the data packet, and broadcasts the packaged correction number to the satellite uplink. According to the embodiment of the invention, the propagation time delay, the processing time delay and the queuing time delay in the satellite-based augmentation system are reduced, and the relatively small correction number time delay is ensured, so that the high-precision positioning real-time correction effect of the terminal is ensured.

Description

technical field [0001] This application relates to the field of satellite positioning, in particular to correction number transmission technology. Background technique [0002] It takes a certain amount of time for the satellite-based augmentation corrections to be transmitted from the base station network to the final terminal (user) through the data link. For real-time correction at the terminal level, one method is to use a certain amount of data to correct the data through a certain model. Prediction: In a mathematical sense, model extrapolation always has certain errors, and the larger the extrapolation step size, the greater the prediction error, and the worse the accuracy of satellite-based augmented positioning. This is the satellite-based augmented correction data age. The concept of period, so the younger the age of the satellite-based augmentation correction data, the better. The satellite-based augmentation system is a long transmission chain from data receiving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185
CPCH04B7/18513
Inventor 贺黎滔
Owner QIANXUN SPATIAL INTELLIGENCE INC
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