The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008 
Parameter 
UniScan™-36 
UniScan™-24 
Antenna type 
Single reflector axially symmetric, 
sectional, solid 
Type of antenna 
positioner 
3-axis (X-Y-Z) 
2- axis (X-Y) 
Antenna reflector 
diameter, m 
3.1 
2.4 
Antenna gain, dB 
45.5 
44 
Polarisation 
Right circular 
Working frequency 
band, MHz 
7.750.. .7.850 
8.000. ..8.500 
Noise temperature of 
the low-noise amplifier- 
converter, K 
65 
G/T (at GHz 
frequency, deg. 
elevation), dB/ T 
23 
22 
Rotation range for 
azimuth direction (Z), 
deg. 
-270 ... 270 
— 
Rotation range for tilt 
(Y), deg 
-20 ... 20 
-90 ... 90 
Rotation range for 
elevation (X), deg. 
0 ... 180 
0 ... 180 
Antenna system weight 
(not more than), kg 
1,000 
400 
Antenna system 
working temperature 
range, ° C 
-50...+50 
Wind speed, m/s: 
operational 
survival 
20 
40 
Figure 3 Antenna system of UniScan™- 
Figure 4 Antenna system of UniScan™-24 
The UniScan™ consists of: 
the antenna system; 
the control unit; 
universal demodulator; 
computer interface boards; 
an Intel Pentium IV based PC (one or two, see below); 
the software; 
a set of connecting cables; 
documentation. 
The UniScan™is supplied with specialised MS Windows XP 
software for: 
the control of reception and data recording to a PC hard disc 
(ScanReceiver®); 
the preliminary processing (data formatting, geolocation and 
calibration). Definite structure of this software depends on 
station configuration, i.e. list of data to be acquired; 
the visualisation and analysis of images (ScanMagic®, one 
license); 
cataloguing images (ScanEx Catalogue Manager®); 
additional thematic image processing (ScanEx Image 
Processor®, one license). 
Data recording and storage is implemented in formats 
developed by the R&D Center ScanEx. They preserve all of the 
metadata received from a satellite and the metadata added in the 
course of reception. These formats are fully supported by the 
delivered software. It is also possible to obtain low-level 
products in standard formats. 
2005 2006 2007 
Years 
Figure 5 Growth of UniScan ground stations amount 
1397