The Future Light Of Indoor Precise Positioning

With the rapid development of fifth generation communication technology (5G), indoor positioning technology has ushered in new breakthroughs. The combination of 5G and ultra wideband (UWB) positioning technology provides a new approach to solving the problem of poor accuracy and stability of single sensor positioning. This article proposes a fusion positioning algorithm of 5G+UWB, which significantly improves the accuracy and stability of indoor positioning by combining the advantages of both technologies.

The complementary advantages of 5G and UWB

5G technology, with its high frequency and large bandwidth characteristics, has high positioning accuracy, but its signal stability is often challenged in complex indoor environments. On the contrary, although UWB technology is slightly inferior in positioning accuracy, its signal stability is high and it can maintain good performance in environments with severe multipath effects. Combining the two can complement each other's strengths and weaknesses, achieving more accurate and stable positioning results.

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Innovative application of fusion positioning algorithm

This article constructs a 5G indoor positioning model based on time difference of arrival (TDOA), a UWB indoor positioning model based on trilateration algorithm, and a 5G+UWB indoor positioning model based on fusion positioning algorithm. Firstly, the weighted least squares (WLS) algorithm is used to obtain preliminary localization results for each individual system. Next, the preliminary results were improved by combining the Taylor series expansion method to further enhance the positioning accuracy. On this basis, the positioning results of the two individual systems are fused to obtain the final combined positioning result.

Experimental verification: excellent positioning performance

The experimental results show that the accuracy of UWB single system positioning results is low, but the stability is high; The 5G single system positioning results show high accuracy, but slightly lower stability. By integrating positioning algorithms and combining the advantages of both, we have obtained positioning results that are both accurate and stable. Specifically, the positioning accuracy of the combined system can reach a maximum of 0.22 meters and a minimum of 0.73 meters, achieving sub meter level positioning accuracy. This achievement not only validates the effectiveness of the fusion positioning algorithm, but also provides a solid technical foundation for future indoor positioning applications.

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Application prospects: ushering in a new era of indoor positioning

The fusion positioning technology of 5G and UWB has broad application prospects in many fields. In smart homes, it can achieve precise positioning and control of household appliances; In intelligent logistics, it can improve the efficiency of warehouse management and distribution; In medical monitoring, it can track the patient's location in real-time and provide safer medical services. In addition, this technology can also play an important role in improving operational efficiency and management levels in large commercial and industrial environments.

Innovation drives the future

The fusion positioning technology of 5G and UWB, by fully leveraging the advantages of both, breaks through the limitations of single sensor positioning and injects new vitality into the development of indoor positioning technology. With the continuous advancement of technology and the deepening of applications, 5G+UWB fusion positioning will bring more convenience and possibilities to our lives and work. In the future, with the emergence of more innovations, we have reason to believe that indoor positioning technology will usher in a more brilliant new era.