© Spot Image Spot Image data and products Spot5 & Kompsat2 : complementary data for mapping large areas at large scales Michaël TONON Market Manager for Cartography / Cadastral Mapping Racurs Conference - Montenegro - September 2006

© Spot Image Spot Image expanding portfolio  An increasing range of satellites and products to serve operational projects at different scales  The « good-old » Spot2-4  Spot5 « the Cartographer »  Formosat2 « the Change Detector »  Kompsat2 Successfully launched in July 2006

© Spot Image SPOT5 : pan-sharpened image 2,5 m over Ouagadougou

© Spot Image SPOT5 « the Cartographer »  The Four Pilars for a good mapping system Revisit Efficient Resolution Large Field of viewGood Geometry

© Spot Image The Four Pilars for Mapping : revisit SPOT : 26 days (same angle) – few days (different angles) Formosat2 : every day (same angle)

© Spot Image The Four Pilars for Mapping : the Field of View

© Spot Image Spot5 satellite : designed for geometry  Field of view : 60 km  a package of complementary sensors for mapping :  HRG1&2 : Very High Resolution images for geoinformation extraction Pan : 5 m & 2,5 m – Color : 10 m  HRS : planimetric and altimetric reference (Reference3D) for the best ortho-correction all other the world  Doris, Stellar Sensor : provide the best satellite position used downstream for the best image geometric accuracy HRS HRG 1 VEGETATION DORIS HRG 2 Stellar sensor

© Spot Image P (l, c) P (x, y) Satellite position ? Satellite orientation (attitude) ? The Four Pilars for Mapping : an accurate geometry (photogrammetry)

© Spot Image The Four Pilars for Mapping : an accurate geometry Spot images (dimap) : both raw images and complete, precise metadata are provided : Position and velocity of the satellite provided by Doris system (accuracy < 1 m) every 10 s Attitude angles (roll, pitch, yaw) every seconde and Attitude changes every 0,12 secondes with the star tracker (accuracy < radian)

© Spot Image The Four Pilars for Mapping : an accurate geometry  Internal Orientation of each detector of each band inside the sensor : 24,000 values (color image)

© Spot Image The Four Pilars for Mapping : an accurate geometry  Real rigorous photogrammetric modelling is possible with Spot images  well known modelling on the market and available in many commercial processing software BUT few are using most of existing metadata (like Photomod for instance…)  The SPOT 5 absolute accuracy (with no map, no Ground Control Points) using only on-board data : - single scene : 50 m RMS (model accuracy) - block of scenes : 12 RMS (model accuracy)  With convenient GCPs and DEM : accuracy better than the pixel size (2,5 m)

© Spot Image GCPs Tie points Block = segment A + segment B + segment C Seg. A Seg. B Seg. C GCPs from maps or GPS Advantage of Space-Triangulation Country C Country A Country B No map available No ground survey possible The images over the country B are perfectly corrected

© Spot Image The Four Pilars : an accurate geometry Ortho-correction using space-triangulation : few weeks 237 SPOT 5 scenes 2.5m black and white From August 2003 up to November /- 31° Irak, 2003 ( Km²)  Huge acquisition capacity + Space Triangulation GCPs in the neighboring Countries …

© Spot Image The Four Pilars : an efficient resolution 10 m 3 m 1 m < 0,5 m Map updating 1 : , 1 : Topo map 1 : City map 1 : , Topo DB Urban DB 1 : Resolution SPOT5 resolution Panchromatique Supermode (2,5 m)Panchromatique (5 m) Colour (10 m) Cartographic scale Kompsat2 resolution Kompsat2 Panchromatique (1 m)

© Spot Image The Four Pilars : an efficient resolution  Spot5 Pan-sharpened image (2,5 m) 1 : scale map

© Spot Image FORMOSAT-2 “the Change Detector”  FORMOSAT-2 launched on May 20, 2004  Owned by NSPO (National Space Program Office), Taiwan  NSPO has appointed Spot Image as exclusive worldwide * distributor (*except for Taiwan & Mainland China)

© Spot Image Formosat-2 “the Change Detector”  FORMOSAT-2 special orbit 891 km: sun-synchronous & geo-synchronous Daily revisit of accessible areas, always seen under the same roll angle 9:30 am Local Time at descending node  FORMOSAT-2 imaging capabilities 2-m pan / 8-m colour Swath NADIR: 24 km 4 spectral bands (R.G.B., SWIR) On board memory: 40 Gbit High agility: stereo along the track and fast roll access

© Spot Image Formosat-2: Very specific orbit  Coverage with +/- 45 ° tilt

© Spot Image Nuclear Power Plant: 2 active Reactors

© Spot Image Day 1:Low activity Day 2:Arrival of a containership and a barge Day 3:Arrival of a new containership and barge departure Day 4: containership departure and arrival of a war-ship and a barge Change detection over DJIBOUTI (June, 2005)

© Spot Image Day 5: containership and barge are moving, arrival of a second war ship Day 6: 2 new containership, departure of the 2 war ships and arrival of a new war ship Day 7:departure of one containership Day 8:departure of the second containership and arrival of a barge Change detection over DJIBOUTI (June, 2005)

© Spot Image The KOMPSAT-2 system: Satellite characteristics KOrean Multi-Purpose SATellite The Korean Aerospace Research Institute (KARI) has made Spot Image exclusive distributor of data from the KOMPSAT-2 Earth observation satellite except for customers from Korea, the United States and the Middle East.  Mass: ~ 800 kg, Power: ~ 900 W  Sun synchronous orbit at 685 km: 3-day revisit  10:50 a.m. local time at ascending node  Payload: optical camera  Panchromatic channel, 1m GSD, 10 bit  Color channels (4), 4m GSD, 10 bit  15 km swath  Onboard compression (up to 5 ratio)  96 Gbit EOL onboard digital storage

© Spot Image The first Kompsat2 images !

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© Spot Image

© Spot Image Mapping products  SPOT5 : topographic mapping at scales 1: and 1:  Kompsat : 1:25000 to 1:10000  Partnership between Spot Image and the French Mapping Agency (IGN) for cartographic purposes. Our Analysis : the line mapping market is mature enough : - hardware/software : pricesefficiency - satellite images : ratio area/resolution/accuracy  updating pricespeed Map updating need is huge !

© Spot Image HRS products : network of GCPs over huge areas Extract to locate the GCP The GCP Coordinates of the GCP It is possible to order not the images themselves but only location and coordinates of some Reference points for many applications (images registration, targeting and defense applications,…) over huge areas. Accuracy of the points all other the world : 12 m RMS. Advantages : - GCPs ready to use => easy ! - no need to buy the images or to go on the field  cheaper and faster ! - the network can cover very large area => faster.

© Spot Image An operational example : updating of a serbian map  Ortho-correction of the SPOT5 THX image with an accuracy fully compatible with the required scale (very good superimposition between Spot-image and serbian Maps) ;  Scanning of the serbian map master planes using a A0 format and high resolution scanner (1200 dpi) ;  Two IGN operators updated the whole map (3280 new buildings + changes in the road network)  Duration of the updating for one sheet : - the updating of the whole 1: serbian map by well trained operators : two weeks ! => very rapid !  As in a traditional process, some field survey is required to solve some photo-interpretation problems or to collect additional information (place names, boundaries,…).

© Spot Image Old map

© Spot Image THX ortho-image

© Spot Image Updated map

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© Spot Image Cadastre : interest of Spot data for a cadastral project A Spot 5 coverage of the area allows : - To ensure a complete view of the area, for navigation and field trip monitoring - To classify the area between “rural” area (2) and dense area (4) => dense area : acquisition locally of a higher resolution (Kompsat2) => “rural” area : some information can be directly extracted from the Spot image

© Spot Image Accuracy : Cadastral map, Sremcica area  Serbia : a metric cadastre, 20 years old  Test with IGN and SISA to superimpose it with ortho-corrected Spot5 2,5 m color image  Very good accuracy  Change detection

© Spot Image Example of good Spot geometry : the serbian cadastre

© Spot Image Example of good Spot geometry : the serbian cadastre

© Spot Image Z1 : SPOT 2.5-m orthoimage

© Spot Image Z1 : Urban monitoring Recent urbanisation, big buildings

© Spot Image Z2 : SPOT 2.5-m orthoimage

© Spot Image Z2: One parcel, two land uses Perfect overlay Two land-uses - crop - wood For only one parcel

© Spot Image Z3 : SPOT 2.5-m orthoimage

© Spot Image Questions ?

© Spot Image Fasep project in Russia : Large Scale Referential concept  Project between IGN, SPOT Image, ADETEF/DGI (France) and ROSNEDVIZHIMOST (Russia) during one year  Target : to test the concept/methodology of the French Large Scale Referential over a Pilot Area (rayon of Tarusa, closed to Moscow) with the help of satellite data

© Spot Image The French Large Scale Referential (National data base)  Topography (1:10,000 to 1:25,000) BD TOPO®  Cadastre (both raster and vector) BD PARCELLAIRE® Ortho-images BD ORTHO® Georeferenced adresses BD ADRESSE®

© Spot Image The Pilot Project over Tarusa  To do a kind of Large Scale Referential over Tarusa area at different scales : - 1:200,000 : using low resolution Spot images - 1:25,000 : using 2,5 m Spot5 image - 1:10,000 : using Ikonos or Quickbird (or kompsat) images - 1:2,000 : using aerial photos

© Spot Image Tarusa