Short-range medium-rate fleet communications using SPAD arrays

Lih-Wei Chia; Mehul Motani

doi:10.1117/12.2668378

14 June 2023 Short-range medium-rate fleet communications using SPAD arrays

Lih-Wei Chia, Mehul Motani

Proceedings Volume 12549, Unmanned Systems Technology XXV; 1254904 (2023) https://doi.org/10.1117/12.2668378
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

We present a novel approach to underwater fleet communication using single-photon avalanche diode (SPAD) arrays on the receiver. Using a large array and a focusing lens, the array can be spatially allocated to different sectors within the lens’s field of view. This eliminates the need for precise pointing of the receiver towards the transmitter and enables simultaneous reception of multiple transmitters across the entire array. We demonstrate the feasibility of our approach through a prototype receiver that utilizes a 7x7 SPAD array, a wide field-of-view lens and FPGA processing. We were able to achieve a raw data rate of 6 Mbps across a folded 25m clear water channel. Through the use of artificial attenuation with ND filters, we estimate that the achievable distance for a raw data rate of 6 Mbps in clear water with a BER of 10^-3 is approximately 400m. In over-the-air testing, we were able to achieve simultaneous communication over the entire 7x7 array at 6 Mbps.

Conference Presentation

Citation Download Citation

Lih-Wei Chia and Mehul Motani "Short-range medium-rate fleet communications using SPAD arrays", Proc. SPIE 12549, Unmanned Systems Technology XXV, 1254904 (14 June 2023); https://doi.org/10.1117/12.2668378

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available