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Bringing the Visible Universe into Focus with Robo-AO

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Accurate Low Complexity Quadrature Angular Diversity Aperture Receiver for Visible Light Positioning.

Stefanie Cincotta^1,2, Adrian Neild³, Kristian Helmerson⁴

¹Manufacturing Research Unit, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, VIC 3168, Australia.

Sensors (Basel, Switzerland)

|September 28, 2024

Summary

This summary is machine-generated.

A new Quadrature Angular Diversity Aperture Receiver (QADA) uses simple components for accurate indoor positioning. This visible light positioning system offers a compact and flexible solution for angle of arrival estimation.

Keywords:

angle of arrival (AOA)indoor positioning system (IPS)programmable system on a chip (PSoC)quadrature angular diversity aperture receiver (QADA)sensor fusion visible light positioning (VLP)

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Area of Science:

Optoelectronics
Indoor Positioning Systems
Sensor Technology

Background:

Existing indoor positioning systems (IPS) often rely on radio transmitters, with limited research on compact angle of arrival (AOA) receivers for visible light positioning (VLP).
Visible light positioning (VLP) utilizes LED lights as beacons, with cameras or photodiodes (PDs) as receivers, typically estimating position via AOA or signal strength.

Purpose of the Study:

To introduce a novel, compact Quadrature Angular Diversity Aperture Receiver (QADA) design for visible light positioning (VLP).
To demonstrate the feasibility of using readily available components for accurate AOA estimation in VLP systems.

Main Methods:

Development of a new QADA design incorporating a quadrant photodiode, a 3D-printed aperture, and a programmable system on a chip (PSoC).
Experimental validation of the QADA design within a room-sized test chamber to assess AOA estimation accuracy.

Main Results:

The developed QADA design successfully provided accurate AOA estimates in a room-sized environment.
The use of a PSoC allows for flexibility and potential integration with other sensors for future sensor-fusion systems.

Conclusions:

The new QADA design offers a viable, compact, and cost-effective solution for AOA-based VLP.
The PSoC's programmability enables future advancements in sensor fusion for enhanced indoor positioning.