Bench Top VDES Prototype - Software Defined Radio Team 2028 - PowerPoint PPT Presentation

Bench Top VDES Prototype - Software Defined Radio Team 2028 Bridget Kennedy Brittany Smith Matthew Sodoski Sponsor : Irene Gonin at the US Coast Guard Research and Development Center Advisor: Liang Zhang

Talk Outline ● Project Overview ● Background ● Challenges ● Our Solution ● Future Work

Project Overview ● Create a VDES system that can be used by the Coast Guard ● Software Defined Radio ● Final Product: Outline of Implementation of AIS

Background ● Important to communicate information for ships ● 3 systems, 2 channels each, with different frequencies ● Each transmits different information

Engineering Challenges ● Communication Systems ○ Parallels between Digital and Analog Communications with this project ● Coding and Implementation Using MATLAB and GNU Radio

Solution ~ Software Defined Radio Hardware ● Coast Guard Radio ● AIS → ASM → VDE Software ● Open-source ● GNU Radio Companion ● MATLAB Code

Constraints and Pandemic Plan ● Limited access to software ○ Create a guide on how to implement the software ● Create a detailed outline of the AIS standard ● Recommend the next steps for future groups to implement this system

Solution - Software ● Generating AIS Waveform ● MATLAB Decoder ○ Uses RTL-SDR to receive AIS transmissions ● GNU Radio Receiver and Transmitter

Solution ~ AIS Application Guide ● Outline the standard ● Explaining how each process works ○ Encoding and Decoding Data ○ Time Division Multiple Access Scheme ○ Transmitting and Receiving Data ● How to apply the standard ● Explained every Message Type

AIS -TDMA

AIS -Encoding and Decoding Data ● GMSK Modulated/Demodulated ● Input of 6-bit ASCII ● Output is in 8-bit ASCII ● 27 Different Message Types

Gantt Chart

RACI Chart

Future Work ● Implementing the AIS with SDR ○ Read through our guide! ● ASM Research and Implementation ● VDE Research and Implementation

Questions??

Final Presentation guidelines ● Project overview [5 pts]: Explain the background of the project and engineering challenges. If the project is built on a senior design project from previous year(s), focus on the new addition to be done in this current year. -DONE ● Approach/solution [5 pts]: Describe the final approach/design/solution of the project work to address the challenges. -DONE ● Constraints [5 pts]: Discuss any constraints (technical, time, economical, societal, COVID-19, etc.) that affect the selection and implementation of the approach, design and/or solution. -DONE ● Project management [5 pts]: Explain team member responsibility assignment (RACI chart), part list and final cost (if applicable), final project timeline (Gantt chart). -Matt Update Timeline -Bridget: RACI Chart ● Writing [5 pts]: Writing of the viewgraphs and utilization of visual/graphical illustration. ● Presentation [5 pts]: Presentation clarity and style, timing.