Three-dimensional location system based on an L-shaped array of Rydberg atomic receivers.

Area of Science:

• Atomic Physics
• Microwave Sensing
• Navigation Systems

Background:

• Rydberg atomic receivers offer high sensitivity and broad bandwidth for microwave electric field detection.
• Precise navigation and remote sensing applications require advanced location technologies.

Purpose of the Study:

• To theoretically propose and experimentally demonstrate a Ku-band 3D location system using Rydberg atomic receivers.
• To validate the system's accuracy and velocity measurement capabilities.

Main Methods:

• Utilizing an L-shaped array of Rydberg atomic receivers.
• Employing a triangulation method to determine phase difference and angle of arrival.
• Experimental validation of the proposed system.

Main Results:

• Achieved excellent consistency between derived and actual coordinates.
• Demonstrated a location system validity of approximately 90% with a 5.7 mm theoretical maximum tolerance.
• Confirmed velocity measurement capability with errors less than 0.5 mm/s for moving targets.

Conclusions:

• The proposed L-shaped Rydberg atomic receiver array enables accurate 3D location and velocity measurement of microwave fields.
• The system's modular design allows for extension to multi-input-multi-output and multi-channel processing systems.
• This technology holds significant potential for future precise navigation and remote sensing applications.