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As an important part of PNT system (Positioning, Navigation and Timing), indoor positioning technology can solve the vulnerability problem of space-based navigation system in the presence of occlusion and interference and provide users with completed services such as indoor positioning, navigation, query, identification and event inspection. The analysis of a large number of patents related to indoor positioning technology indicates that the relevant patents are relatively concentrated in China, the United States, Korea, Japan and other countries and a large-scale patent layout has been carried out all around the world. It is of great significance for us to track the development route of PNT technology to understand the technological development trend of foreign countries, to optimize the technological development route, and to make full use of the supporting role of patents in technological forecasting.
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go back to reference Deng, Z., Yin, L., Tang, S., et al.: Overview of key technologies of indoor positioning. Navigation Positioning and Timing, Beijing (2018) Deng, Z., Yin, L., Tang, S., et al.: Overview of key technologies of indoor positioning. Navigation Positioning and Timing, Beijing (2018)
- Patent Analysis Reveals the Development Route of the Indoor High-Accuracy Positioning Technology
- Springer Singapore
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