PLEIADES ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 1
In orbit satellite configuration Star Tracker (+Y) Orbit Normal (+Y) Velocity (+X) Solar Array Instrument Radiators Stiffener S Band Antenna X Band Antenna Instrument Baffle Earth (+Z) Antenna Support Structure Sun Synchronous Orbit 698 km daily descending Cycle 26 days (14+15/26 orbits/day) Local time on DN = 10h15 ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 2
Inside view of the satellite Antenna Support Structure Mass: 1 tonne Volume : h~3.5 m x 2 m Instrument Instrument : Alcatel Satellite : Astrium Bus structure Equipments on the panels Star Tracker (+X-Y) Control Moment Gyros Propulsion Module Fibre Optic Gyros Inertial Core Unit Star Tracker (+Y) Detection Unit Launcher Interface AOCS : 4 fiber optics gyros 3 star sensors 4 CMG cluster Doris Navigator TMI : 450 Gbits Mass Mémory Transmission 3 x 150 Mbits/s Phase C/D since october, 3rd 2003 FM1 delivery : January 2009 ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 3
Mission Centres overview Swedish Civilian Image Receiving Station (Kiruna) French Defense Main Center (Creil) PLEIADES HR Dual Ground Segment Secure Dual Ground Center - Dual Programming facilities - PCME - Command and Control facilities - Accurate Attitude Restoration Facilities Image Calibration Center (Toulouse) French Civilian main center (Toulouse) Spanish Defense main center (Tojeron) Italian Defense Main Center (Pratica de Mare) Italian Civilian RIRS (Matera) ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 4
Orbit and accessibility Orbit : Sun synchronous, phased and quasi-circular at 694 km, 26 days cycle ; descending node 10h15, 180 phasing between the two satellites. Instrument : 20 km nadir swath, panchromatic resolution < 1.00 m in the performances domain (0.70 m at nadir), 4 spectral bands : resolution 4 times PAN resolution (Green, Red and Near infra-red + Blue band). Accessibility : For a resolution better than 1 m : Viewing angle 1 satellite 2 satellites 5 26 days 13 days 20 7 days 5 days 30 5 days 4 days Global access : With one satellite : 2 jours (viewing angle 47 ) With two satellites : daily (viewing angle of 43 ) ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 5
Stereo coverage capability Stereo and Tristereo B/H Length 0.15 20 km 0.2 60 km 0.3 120 km 0.4 175 km 0.5 225 km 0.6 280 km 0.7 300 km 0.8 300 km B/H Length 0.3 20 km 0.4 60 km 0.5 90 km 0.6 120 km 0.7 145 km 0.8 175 km 0.9 205 km 1 225 km ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 6
"Monopass"" coverage capability instantaneous" capability : "monopass" acquisition Width of coverage Maximum length 20 viewing angle access authorised 60 km (3 strips) 185 km 80 km (4 strips) 110 km 100 km (5 strips) 70 km 120 km (6 strips) 45 km 30 viewing angle access authorised 60 km (3 strips) 300 km 80 km (4 strips) 205 km 100 km (5 strips) 150 km 120 km (6 strips) 110 km 140 km (7 strips) 85 km ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 7
Orbit and accessibility : 1 satellite Daily access for 1 satellite at 30 ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 8
Orbit and accessibility : 2 satellites At low latitude, only one of both satellites flies daily by a specific zone A 43 viewing angle is necessary to reach any spot on the globe. ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 9
Chronologie système PHR Baseline Deux programmations des satellites par jour Matin vers 6h TU Soir vers 19h TU mode «très urgent» permet de «casser» cette chronologie pour programmer le système de façon asynchrone Dépôt de la prog au mieux 3 h avant le survol la procédure d activation de ce mode (décision intergouvernementale) n est pas aujourd hui définie. A l étude Rajout d un plan de travail l après midi avant le survol du continent américain Suppression d un back up station (gain en réactivité de 100 min avant le survol du Japon) ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 10
Earth quake Time : 00:58:53 (UTC) 07h58 epicentre local time. TSUNAMI 26/12/2004 Tsunami (epicentre local time) 8h30 (roughly) : Sumatra 9h (roughly) : Thailande, Birmanie and Bengladesh 10h (roughly) : Sri lanka Pléiades : 10h15 Could only have acquired images on the zone if it had been programmed «by chance» on this zone (Spot 2, Jason and some other satellites have taken images of the zone by pure chance). ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 11
«Tsunami» programmation Programmation deposit : 26/12/2004 Aiming at imaging the total damaged coastal zone Absolute Priorité given to this programmation Decreasing weights by zone : red > orange > yellow ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 12
Request depositing Pléiades agility eases the acquisition of the coastal zones Sat 2 Sat 2 Sat 1 125 segments have been deposited Zone de recouvrement Couloirs accessibilité à 2 satellites et à 43 ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 13
Acquisitions on 27/12 PPV 27/12/2004 Mailles validées 27/12/2004 (31.2 %) ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 14
Receiving and processing data Most urgent data : Received on Kiruna 27/12 around 7h TU sent by network to Toulouse 27/12 around 8hTU Images available 27/12 around 9h TU The rest of the data are received directly on Toulouse Received around 10h TU Processing Images available around 11h TU ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 15
Acquisitions on 28/12 PPV 28/12/2004 Mailles validées 27+28/12/2004 (60 %) ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 16
Acquisitions on 29/12 PPV 29/12/2004 Mailles validées 27+28+29/12/2004 (86.4 %) ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 17
Zone acquisition finalisation on 30/12 PPV 30/12/2004 Mailles 27+28+29+30/12/2004 (100 %) ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 18
Synthesis Around 90 % of the Indian Ocean coasts have been covered in 3 days by the two Pléiades satellites DATE Meshes to acquire Validated Meshes % TOTAL cumulated 27/12 125 39 31.2 31.2 % 28/12 71 36 28,8 60 % 29/12 39 33 26,4 86.4 % 30/12 17 17 13,6 100 % TOTAL 125 100% ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 19
Development status ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 20
Ground segment Programming and Image Processing functional chains : PDRs foreseen mid-april 2006 Development running in a nominal way Command and Control functional chain : CDR February 2006 Development running in a nominal way Users Mission Centers : SPOT Image, French Defence, Spanish Defence The Call For Tender has been released, kick-off foreseen beginning October 2006. ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 21
Satellite Equipments CDR are reaching close-out for most of them Technological contingencies with the PAN Detectors, now under control. Instrument AIT and Bus AIT foreseen to start in parallel in June 2006 Instrument CDR : October 2006 Satellite CDR : February 2007 Satellite AIT start-up : October 2007 Satellite delivery : mid January 2009 ORFEO First Methodology and Thematic teams meeting 23 & 24 march 2006 - Paris 22