YUSEND Communication System Design Update ENG 4000 - February 11, 2009.

YUSEND Communication SystemDesign Update ENG 4000 - February 11, 2009

 BackgroundProject Overview

 Ground StationProgress Update

  Functionality • Received first

signals• 2m and 70cm

bands

• Motor control• Azimuth and

elevation pointing

 Space SegmentProgress Update

  Hardware Selection

• Based primarily on flight heritage

• Handheld transceiver• Yaesu VX-3R

• TNC • Paccomm

PicoPacket

 Space SegmentProgress Update

  On-Board Computer

• Successfully connected to camera

• Pictures transferred over wired connection

  Future work • Interface with

TNC, Transceiver• Motor controls

 Space SegmentProgress Update

  Antenna Design

• Tx, Rx

• Alternate designs• Measuring tape• Spring-loaded• Telescopic

University of Tokyo XI-IV

Weeks 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Tasks                                                                

Project Proposal                                                                

Contract Proposal                                                                

Ground Station

Assembly & testing                                                                

Basic radio operator's

qualification                                                                

Design Specification

review                                                                

Software development

begins                                                                

1st design update

presentation                                                                

Antenna design and

modeling                                                                

Preliminary design

review                                                                

Antenna fabrication                                                                

2nd design update

presentation                                                                

1st communication link

test                                                                

Critical Design review                                                                

Final design report                                                                

Project Timeline

Budget 

Cash In Kind

Item Cost Change since Sept. Item Cost

Antenna assembly and deployment mechanism

$150.00 Ground Station $12,000

Yaesu VX-3R $239.00 +$39.00 On-board computer

$120.00

PicoPacket TNC $320.00 +$100.00 Weather balloon $80.00

Training Expenses $0.00 -$50.00 Power supply and other test equipment

$2,000

Wires and other materials

$20.00

Presentation Supplies

$150.00

Subtotal $879.00 +$89.00 Subtotal $14,200