Abstract
With the continuous development of modern communication technology, China has made considerable achievements in the field of wireless communication technology. In the process of application of modern meteorological observation technology, the maximum level of automation and information technology has been improved. Through the analysis of RFID positioning technology, this paper proposes a positioning algorithm based on the phase difference and signal strength of radio frequency signal. Aiming at the problem of low positioning accuracy of RFID system, the signal strength received by the antenna is firstly processed by Gaussian filtering. The filtered signal strength is combined with KNN algorithm and Bayesian optimization estimation for the initial positioning of the positioning tag. Then the position of the reference tag is marked and its phase difference and signal strength are collected to form the feature vector. The feature vectors of reference tags were trained in BP neural network algorithm, and the hidden layer features were extracted and input into the SVR training model. In order to improve the training speed, SMO algorithm is combined in the process of training the model. Finally, by inputting the feature vector of the pending positioning tag into the model that has been trained in advance, the position coordinates of the pending positioning tag can be calculated more accurately.
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Li, H., Zhang, M., Shi, X., Wang, Y. (2021). Optimization of Location Technology in Meteorological Wireless Sensor Network. In: Sun, X., Zhang, X., Xia, Z., Bertino, E. (eds) Advances in Artificial Intelligence and Security. ICAIS 2021. Communications in Computer and Information Science, vol 1424. Springer, Cham. https://doi.org/10.1007/978-3-030-78621-2_50
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DOI: https://doi.org/10.1007/978-3-030-78621-2_50
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