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