THEOS available for European Users · 15th GeoCAP, November 18-20, 2009 Taormina, Italy 3 THEOS...

15th GeoCAP, November 18-20, 2009 Taormina, Italy 1

THEOS available for European Users

15th GeoCAP Conference

Damrongrit [email protected] , +66 38 400 090


Outlines

THEOS INTRODUCTIONTHEOS PROGRAMMINGTHEOS POLAR STATIONADVANTAGES TO EUROPEAN USERSON GOING PROJECTS


THEOS INTRODUCTIONTotal mass 715 kgDimensions 2.1 x 2.1 x 2.4 m

Solar array 840 WNominal Lifetime > 5 yearsLocal Solar Time 10:00 amRecording capacity

51 Gbit solid-state memory

Image Telemetry 120 Mbit/sec (X band)Off-nadir viewing +/- 50º (roll and pitch)

Attitude control Earth pointing and high agility

No. orbits/day 14+5/26 orbits/day Sun-synchronous near-circular orbit


THEOS System allows 2 different missions.Panchromatic, high resolution rather small FOVMultispectral, medium resolution with large FOV

Panchromatic Class of Quickbird to Formosat 2 (10 to 20 km swath)More dedicated to cartography, local land use, monitoring and security

MultispectralClass of Spot, Landsat, IRS (>60 km swath)More dedicated to agriculture, forestry, natural resources and management

THEOS INTRODUCTION

15th GeoCAP, November 18-20, 2009 Taormina,Italy 5

INTRODUCTION


INTRODUCTION

Off-Nadir Viewi

ng

Access

Corridor

Repeat

Position

30 1,000 km

5 days

50 1,900 km

2 da


THEOS INTRODUCTIONPAN MS

Resolution (m) / Imaging swath (km) 2 / 22 15 / 90Spectral ranges (um) 0.45 – 0.90 B1 (Blue): 0.45-0.52

B2 (Green): 0.53-0.60B3 (Red): 0.62-0.69B4 (NIR): 0.77-0.90

PAN Level 1A

PAN Level 2A


THEOS INTRODUCTIONGround segment:

Image Ground Segment (IGS) Ladkrabang :To acquire, process, archive, and exploit the imagery from standard products to value added products.

Control Ground Segment (CGS) Si-Racha :To monitor and control the satellite according to the daily optimised mission programming by taking into account user requests and satellite utilisation.


THEOS Launch:THEOS was launched, at 13.37 BKK time on October 1, 2008,

from Yasny launch site in Russia by Dnepr Rocket.

THEOS INTRODUCTION


THEOS INTRODUCTION

THEOS has been operating at the orbit (822 km. altitude) after completion of the orbit transfer on October 14, 2008.

In-Orbit Tests (IOT) started for 2 cycle performing the system commissioning and image calibration globally during October 16-December 6,2008 with 3,800 image segment of 13,000 PAN scenes + 4,840 MS scenes for IOT. 51 Gbits SSR capacity verified.

All Satellite subsystems testing were completely performed withVerification of AOCS modes of operations; Acquisition and Safe Hold mode, Normal mode , Orbit Control mode.

With the manoeuvre report, it is compatible for more than 10 years in-orbit life.

THEOS In-Obit Test and Calibration


THEOS INTRODUCTIONTHEOS Image Calibration

dark signal, relative gainsSNR, dynamic rangeabsolute calibrationgeometric calibrationpointing knowledge, pointing accuracy measurementMTF measurementoverall image quality

CNES engineering team joined and supported us for THEOS system commissioning and image calibration during IOT and IOT Acceptance Reviews (IOAR) meeting in January 2009.


THEOS INTRODUCTIONAbsolute calibration

Approach based on SADE database (CNES Method)Using desert sitesrequires continuous acquisitions over selected sitesrequires pre-processing of data (tool provided by Astrium)

Dataset acquired during IOTmore than 50 measurements available and pre-processedsynthesis file generated, analysed and sent by Astrium to CNESCross-calibration with respect to CNES operated sensors, used as reference.


THEOS INTRODUCTION

SNR computed fromradiometric model (dark noise, photonic noise, detection chain gains, quantisation noise)absolute gains from ground measurementupdated dark noise

SNR is better than specifications.

PAN B1 B2 B3 B4

SNR 147 202 234 246 246

spec 90 100 100 100 100


THEOS INTRODUCTION

MTF:Measurement of Knife Edge Function on ground patternDerivation of MTF by mathematical formula

AcquisitionsFirst acquisition without cloud on November 17th

Second acquisition on November 23rd

Third acquisition on Pong Hu pattern on December 7th

PAN MTF > 0.13MS MTF > 0.2

Salon de Provencepattern

0.0

0.2

0.4

0.6

0.8

1.0

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Normalised frequency

MTF

val

ue

MTF ACTMTF ALTTheoretical 0.1

15th GeoCAP, November 18-20, 2009 Taormina,Italy

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On demand collection : based on users/customers’ requests

Event-Based Collection :• Disasters: Typhoon Morakot hit Taiwan and China• ASIAES Project

World collection : Marketing based, potential area (customer based)

THEOS PROGRAMMING


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World Collection July – August 2009: Europe

THEOS PROGRAMMING


17

0

10

20

30

40

50

60

70

80

90

100

%

World Collection July - August 2009

Series1 64.59627 23.88535 76.15385 60.07905 9.774436 9.638554 4.166667 1.473684

ASEAN ASIA Australia Europe North America

Middle America

South America

Africa

World Collection July – August 2009:

THEOS PROGRAMMING


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THEOS PROGRAMMING


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World Collection July – August 2009:Multi-Spectral

100 % Cover• Indonesia/ Malaysia & Brunei/ Singapore/ Bhutan/ India/ Ireland/ Latvia/ Lithuania/ Slovak

More than 90 %• Papua New Guinea/ New Zealand/ UK/ Poland

All expected areas in ASEAN were imaged Half of Australia and Europe areas were imaged 50% good images in Australia, 36% good images in Europe 62% good images in additional areas

THEOS PROGRAMMING

THEOS Polar station


THEOS polar station would be deployed at Esrange Space Centre, Kiruna under a contract with Swedish Space Corporation (SSC) offering around 10-13 orbits’ contact.

System capacity enhancement (THEOS on the global market )

Complement and backup to GISTDA’s main station, TT&C commands in case of S-band ground antenna and satellite

l

X-Band Station(Kiruna)

X-Band Station

Data Processing Facility (DPF)

Data Processing Facility (DPF)

Value Added Product Facility

Central Archiving +

Catalogue Server

S-Band Station (Kiruna)

Satellite Control Center (SCC)

Mission Planning Center (MPC)

S-Band Station

THEOS GeoPortal

Mission Production

THEOS

TC/TM House KeepingMission Work Plan

Image TelemetryMission Data

Service

Quick Delivery

Media/FTP

Media Only

Ordering/QuotationOrder Tracking

Product DeliveryInvoice/Billing

User Request

ConsultationProgramming User


Quick Deliveryftp/media

Overall THEOS Polar station

SSC


Satellite programmingSatellite programming request

Reception

Pre processing

Catalogue search and browse

Product selection

Ground registration Co registration

Orthorectification

Full scene correction

Delivery

Client Siracha

Client

SSC, Kiruna Step 1

LadkrabangImage Production

SISA


ADVANTAGES TO EUROPEAN USERS

Reception, pre processing and archiving including customer specific evaluation and service (cloud)

Good collaboration- SSC & SISA

Expansion of the network station- Prioranet

THEOS

Uplink of commands for programming of THEOS(normal and urgent from client)

Near Real Time of THEOS imagery data and Hi speed delivery of imagery data -terrestrial link (Push and Pull)

Establishment of a customer specific THEOS image archive including a catalogue and querysystem (quick look)


ADVANTAGES TO EUROPEAN USERSTHEOS Large Swath: Thailand

Coverage Area: 513,115 km2MS: whole country and border (green area)PAN : partial (blue area)

Acquisition Duration : 23 days (no reprogram)Imaging criteria : Nadir angleNumber of scenes

PAN 491 scenes (187,768 sq.km.)MS 127 scenes (768,142 sq.km)

Advantage: cover Thailand within 1 month, thanks to large swath width of MS camera

Implying toFrance: 674,843 km2Italy: 301,338 km2


Coverage Area : whole country and

border (both PAN and MS)

Acquisition Duration : 102 days (no

reprogram)

Imaging condition : Nadir angle

Number of scenes

PAN 1809 scenes (674,695 sq.km)

MS 500 scenes (2,760,114 sq.km)

Implying toFrance: 674,843 km2Italy: 301,338 km2


THEOS:28/08/09


THEOS:16/04/09

THEOS:16/04/09


30

THEOS On going project

THEOS Image GeoWeb Portal

User Interface with IMAGE Catalogue online

Automatic Image Production chain

Large and Reliable Robotic Image Archive Library

THEOS Image Ortho-rectification


THEOS Data Transfer via Research and Education Network


ASIAES


ASEAN+3 Satellite Image Archive For Environmental Study (ASIAES)

ASIAES is regional co-orporation recommended by the ASEAN+3 Economics Minister (AEM+3)◦ Space related Agencies in SE Asia China, Japan and Korea

A web portal ◦ Designed to share information of EO satellite products for natural

hazards existed in the ASEAN+3 member countries◦ Online catalogue◦ Search Engine

Implemented in 2007


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Thank you

www.gistda.or.th

THEOS available for European Users · 15th GeoCAP, November 18-20, 2009 Taormina, Italy 3 THEOS...

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