In today's digital and connected age, achieving accurate people location is a key requirement in many industries and scenarios. Whether in indoor navigation, sporting events, retail malls or logistics management, accurate knowledge of people's location and dynamic data is essential to delivering personalized service, improving user experience and increasing productivity. In order to meet this demand, Bluetooth AOA (Angle of Arrival) high-precision personnel positioning technology came into being. Bluetooth AOA technology uses the arrival Angle of the Bluetooth signal to determine the location of the device, providing an accurate and reliable personnel location solution. This paper will introduce the Bluetooth AOA high-precision personnel positioning solution and its application scenarios, discuss the technical principle, the key elements of solution construction and implementation, and look forward to the future development of this technology.

Principle and Technology

Bluetooth AOA high precision personnel positioning technology is based on the arrival Angle of the Bluetooth signal to determine the location of the device. When a device emits a Bluetooth signal, a surrounding receiver (such as a base station or reference point) calculates the device's position by measuring the Angle at which the Bluetooth signal arrives. Bluetooth AOA technology improves positioning accuracy by utilizing multiple receivers, using the principle of triangulation or multi-angle measurement. The difference in signal arrival time and signal strength between these receivers is used to calculate the distance from the device to the receiver and thus determine the location of the device.

Key Technologies

• High-Precision Antenna Array: Using an antenna array with high gain and narrow beam width can improve the accuracy of signal reception and positioning accuracy.

  
  

• High-Precision Clock Synchronization: Keeping the clock synchronized between receivers can eliminate measurement errors and improve positioning accuracy.

  
  

• Signal Processing and Algorithm Optimization: The use of advanced signal processing algorithms, combined with machine learning and statistical analysis methods, can effectively extract and analyze Bluetooth signals, and then realize personnel positioning.

  
  

Key Elements of Implementation

• Hardware Equipment: First, a receiver or base station equipment with a high-precision antenna array needs to be deployed. These devices should be able to receive and process Bluetooth signals and provide accurate Angle of arrival measurements. In addition, clock synchronization between devices is also necessary, which can be achieved through a dedicated clock synchronization scheme or Network Time Protocol (NTP).

  
  

• Software Development: When building the solution, software development is required to process the received Bluetooth signal data, and carry out signal processing, positioning algorithm optimization and data analysis. This includes developing firmware for the base station or receiver, device drivers, and applications for back-end data processing and management.

  
  

• Positioning Algorithm and Data Analysis: The use of Bluetooth AOA technology for personnel positioning requires the development and optimization of positioning algorithms. These algorithms should be able to accurately calculate the location of the device, and be able to adapt to complex environmental conditions and multi-device positioning scenarios. In addition, the analysis and processing of location data can provide more insight and application scenarios.

  
  

• Deployment and Integration: During the implementation phase of the solution, device deployment and integration are required. This includes installation and configuration of receiver or base station equipment, system commissioning and testing, and integration with existing applications or systems.

  
  

Application Scenarios, Including but not Limited to:

• Indoor Navigation and Positioning: In large indoor environments such as shopping malls, hospitals and airports, Bluetooth AOA technology can provide accurate personnel positioning information to help users quickly find destinations, locate lost items or provide personalized navigation services.

  
  

• Smart Factory and Logistics Management: In industrial production and logistics management, Bluetooth AOA technology can be used to monitor and manage personnel's location and dynamic data in real time. This helps improve production efficiency, optimize logistics operations, and ensure worker safety.

  
  

• Event and Stadium Management: At events and stadiums, Bluetooth AOA technology can be used to track the location of spectators, provide personalized services, improve security, and provide real-time data analytics and insights for event operations. For example, in sports competitions, Bluetooth AOA technology can help management teams understand the flow of spectators, analyze pedestrian hotspots and crowded areas, and optimize venue layout and arrange resources.

  
  

• Indoor Location Services and Smart Home: Bluetooth AOA technology can provide support for indoor location services and smart home. By locating the user's location, the smart home system can automatically adjust lighting, temperature and security Settings to provide a smarter and more comfortable living experience.

  
  

• Healthcare and Security Applications: Bluetooth AOA technology is also widely used in healthcare and security fields. In hospitals, for example, efficiency and coordination can be improved by locating medical staff and equipment; In security applications, the entry and exit of personnel and activities can be monitored to ensure the effectiveness of safety and early warning systems.

  
  

• Retail and Marketing: Bluetooth AOA technology provides more refined positioning and personalized services for the retail industry. By tracking the location and behavior of customers, merchants can understand their shopping habits and preferences and provide them with personalized offers and recommendations to improve sales and customer satisfaction.

With the continuous development and innovation of technology, Bluetooth AOA high-precision personnel positioning technology has great potential in realizing accurate personnel positioning, and will show its extensive application value in more fields, providing support for the future intelligent and digital environment.