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Low-power positioning method and system for satellites, and electronic device

A satellite positioning system and satellite positioning technology, applied in the field of low-power satellite positioning methods, systems and electronic equipment, can solve the problems of reduced satellite positioning accuracy, inability to collect data in the cloud, large time synchronization error, etc., to reduce energy consumption for positioning , Reduce the amount of positioning calculations, and ensure the effect of positioning accuracy

Active Publication Date: 2019-01-15
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

However, the disadvantage of this method is that the data collected by the satellite is stored in the terminal, and the data cannot be collected by the cloud, so it needs to be opportunistically uploaded to the cloud
Therefore, it does not support online positioning, and can only perform offline positioning, which is used for post-event position recovery
Moreover, the time synchronization error between the terminal and the cloud is large, which will seriously reduce the accuracy of satellite positioning

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  • Low-power positioning method and system for satellites, and electronic device
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  • Low-power positioning method and system for satellites, and electronic device

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[0034] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0035] In the prior art, traditional satellite positioning algorithms usually use all visible satellites to calculate satellite ephemeris and participate in navigation and positioning calculations. Therefore, the energy consumption of satellite positioning is relatively high. In this application, by designing a selective satellite synchronization algorithm, only a part of the visible satellites are used for positioning, and the energy consumption of satellite positioning is reduced while ensuring the positioning accuracy. The algorithm is specifically: if there is no occlusion area (such a...

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Abstract

The present application relates to a low-power positioning method and system for satellites, and an electronic device. The method comprises the following steps of: step a, selecting a set number of satellites having the highest satellite signal strength according to the previous satellite positioning result; step b, calculating the weight of each satellite by using a gradient descent method, and selecting a set number of satellites having the largest contribution from all available satellites according to the weight of each satellite; and step c, taking the intersection of the satellites having the highest satellite signal strength and the satellites having the largest contribution as optimal satellites, and carrying out satellite positioning by the optimal satellites. According to the low-power positioning method and system for the satellites, and the electronic device, the satellite weight is calculated by the gradient descent method; the optimal satellites are selected by utilizingthe satellite weight and the signal strength; and the satellite positioning is carried out by the optimal satellites. Compared to the prior art, according to the positioning method and system, and theelectronic device, the positioning accuracy can be ensured, and the positioning calculation amount can be reduced, so that the positioning energy consumption can be greatly reduced.

Description

technical field [0001] The application belongs to the technical field of satellite positioning, and in particular relates to a low-power consumption satellite positioning method, system and electronic equipment. Background technique [0002] In modern society, location-based services have become a basic requirement and are widely used in various scenarios such as vehicle navigation, motion track recording, social network sharing, and finding nearby taxis and restaurants. In an outdoor environment, satellite positioning (including GPS, Beidou, Galileo, Glolas and other satellites) can provide a position including longitude and latitude information, and can provide an average positioning accuracy of 10 meters in a clear and interference-free environment. [0003] With the popularity of smart terminals, people's demand for outdoor navigation and positioning continues to grow. However, the high complexity of the satellite positioning algorithm and the energy consumption of satel...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/42
CPCG01S19/423
Inventor 陈孔阳谭光肖钟凯刘毅
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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