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

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Sep 17, 2023 20 likes •182 views

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

SLIDE 1

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

SLIDE 2

Talk Outline

Project Overview
Background
Challenges
Our Solution
Future Work

SLIDE 3

Project Overview

Create a VDES system that can be used by the Coast

Guard

Software Defined Radio
Final Product: Outline of Implementation of AIS

SLIDE 4

Background

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

SLIDE 5

Engineering Challenges

Communication Systems

○ Parallels between Digital and Analog Communications with this project

Coding and Implementation Using MATLAB and GNU

Radio

SLIDE 6

Solution ~ Software Defined Radio

Hardware

Coast Guard Radio
AIS → ASM → VDE

Software

Open-source
GNU Radio Companion
MATLAB Code

SLIDE 7

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

SLIDE 8

Solution - Software

Generating AIS Waveform
MATLAB Decoder

○ Uses RTL-SDR to receive AIS transmissions

GNU Radio Receiver and

Transmitter

SLIDE 9

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

SLIDE 10

AIS -TDMA

SLIDE 11

AIS -Encoding and Decoding Data

GMSK Modulated/Demodulated
Input of 6-bit ASCII
Output is in 8-bit ASCII
27 Different Message Types

SLIDE 12

Gantt Chart

SLIDE 13

RACI Chart

SLIDE 14

Future Work

Implementing the AIS with SDR

○ Read through our guide!

ASM Research and Implementation
VDE Research and Implementation

SLIDE 15

Questions??

SLIDE 16

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.