Research On Key Technologies Of Indoor Navigation Based On 3D Panoramic View

With the improvement of the quality of life,people's requirements for the convenience of life are getting higher and higher,and the demand for location services is also increasing.At present,outdoor environment positioning technologies have been relatively mature.However,due to the influence of satellite signals and complex building structures,these outdoor positioning technologies cannot be applied to indoor environments well.With the wide application of wireless communication technology and intelligent terminals,indoor positioning and navigation methods based on infrared technology,wireless local area network technology,ultrasonic positioning technology,Bluetooth technology,and ultra-wideband technology have emerged.This paper introduces and analyzes commonly used indoor positioning technologies,considering the system requirements,costs,and scalability,and finally chooses iBeacon-based indoor positioning technologies.In order to improve the experience of users,it is a practical research direction to apply three-dimensional panoramic technology to indoor positioning and navigation systems.The thesis mainly studies the key technologies and system design of 3D panoramic navigation based on iBeacon in the hospital scene.First,the current mainstream indoor positioning technology is analyzed and compared,and the technical indicators of the positioning system are formulated.The indoor positioning technology based on iBeacon is introduced in detail,and simulation experiments are performed on the position fingerprint positioning method.The filtering effects of the Mean filter,Gaussian filter,and Kalman filter on the original signal are compared.The original signal received by the system is processed.Second,indoor positioning is ultimately for navigation.In indoor path planning,the commonly used algorithms are A*algorithm,genetic algorithm and ant colony algorithm.This paper introduces the concepts and principles of the three algorithms in detail,and simulates them in MATLAB.The experimental results are analyzed and compared from the speed of the algorithm,the output results,and the stability of the algorithms.It can be seen that the A*algorithm is more suitable for path planning in indoor navigation.Third,the paper introduces the three-dimensional panorama in detail from the principle of panorama technology,the production of panorama images,and the generation of panorama roaming.Discussed how to combine 3D panorama technology and GIS technology for indoor navigation.The problems of road network generation and cross-floor path planning in 3D panoramic navigation system are discussed.A 3D panoramic navigation data model is proposed,and the data composition,formation,fusion and expression of the model are introduced.Taking the hospital scene as an example,a 3D panoramic hospital navigation system based on iBeacon was designed,and the front-end development was completed.