Pratham Paris ground station development

Hai NguyenBoris RobertIngrid BlanchardSofiane FlihBelaid Ait HamoudaNicolas MaringPierdavide CoïssonOlivier Robert

Pratham french team

Prath’art Project

Adrian Riffo

Location of the French team

Hardware

Environmental tests for Paris ground station

Boris RobertIngrid Blanchard

Scheme of our ground station for one plan

Aquisition chain

Test of the equipment

We also test the environment at Saint Maur’s Observatory at both frequencies

145 MHz test

437 MHz tests

LocationWe are currently working at Saint Maur’s

observatoryAt the end, our ground station will be

at the top of Lamarck’s building.

We may have some problem with the environmental noise.

Here is another solution for the acquisition chain:

Another solution : bring our facility to Chambon la forêt

Software supportIssues and strategies

• What ensures scheduler, acquisition and data storage ?– Pratham main application under NI LabVIEW

• How is data managed ?– Filetype specifications give five different files each

acquisition sequence• What happens when power outage occurs ?– We aim to provide updated online system health

monitoring with remote FTP/SSH access

LabVIEW Main Application

parser

Nova eclipse file

# Acquisition date/time

0

1

… …

n

array

while (there are acquisition sequences){if it is time to acquire {

launch acquisition between (i) and (i)}else{

∅}

}

ACQUISITION OFF

4 x ADF7020

4 x AD8302 NI-8302Acquisition box

LabVIEW Main application

FILES PRODUCED

according to filetype specifications

until acquisition end time

ACQUISITION ON

Prath art’ project

Communication part of the project : at every pass of the satellite, virtual connection

between the two campus will be set up through web cam plus typical telecom data control

screen