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acquisitions. Corresponding regional remote sensing 
facilities will maintain local archives and process the 
imagery for customers into the following seven 
standard products:  Radiometrically Corrected  - 
distortions removed for 'quick-look' monitoring of 
specific events; Standard Geometrically Corrected - 
rectified without GCP’s (to a selection of map 
projections) for reconnaissance and monitoring; 
Precision Geometrically Corrected - rectified with 
GCP’s for high precision orthophotos (up to 2 m 
horizontal accuracy); Orthorectified - precision 
geometrically corrected including terrain elevation 
Tasking / Processing Site 
*User Uplinks: 
5tart/Stop Lat-Longs 
Bands Desired & Priority 
* User Crets: 
Tasking Confirmation 
Imagery & Metadata 
Satellite Comm. 
Elevation Angle 
10° 
5° 
3° 
b 
AS 
TRACK 
  
Try 
FLIGHT AP 
ORA Dm 
mt 
data to support up to 1:2,400 scale orthophotos; 
DTM's - elevations generated from stereo pairs; 
Multispectral - pan-sharpened MS (fused pan and MS) 
or band ratio images (selective fusing of MS bands); 
and Image Mosaics - single continuous image scene 
created from contrast/brightness balancing of multiple 
overlapping images. 
Space Imaging is providing a capability for customers 
to browse reduced-resolution imagery in the Space 
Imaging'"^M archive to preview for specific criteria 
such as cloud cover, location, ground sample distance, 
etc. 
Linkup, 28 s (Min 
Space Imaging LEO 
P ang Tasking, 60 s (Min) 
Acquisition & Kk 
I m Imagery, 594 s (Max) 
Ts A 
7 
2% 
W 
3700 km 
(~4000 km max.) 
    
     
  
   
  
  
       
   
  
   
7 \ 
, + 45° \ 
^| [Field of \ 
Regard 
Accessible 
SATELLITE Collection Region 
GROUND 
Figure 3. Space Imaging - Typical Tasking Scenario 
GDE SYSTEMS, INC. 
GDE Systems was an original principal in the now 
defunct Eyeglass group venture. Under the 
management of Dr. Phil Currier, GDE Systems 
obtained its license in June 1995 to operate an 0.85 m 
panchromatic sensor system. GDE Systems is a 
Division of the Tracor Company and is well known for 
its successful development of the Helava digital image 
workstations for precision photogrammetric image 
processing. 
277 
The GDE high resolution imaging system is in its 
preliminary stages of design and only limited 
information is available on its technical characteristics 
and products. Its launch target date is set for late 
1999. This high resolution system is being designed to 
acquire monoscopic imagery in 15 km by 1,700 km 
strips or in 120 km by 120 km patches. It also can 
acquire same pass stereoscopic imagery in 15 km by 
700 km strips or in 70 km by 70 km patches. Current 
assumptions for system technical characteristics are 
shown in Tables 4-7. 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B4. Vienna 1996