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Title
Special UNISPACE III volume
Author
Marsteller, Deborah

International Archives of Photogrammetiy and Remote Sensing. Vol. XXXII Part 7C2, UNISPACE III. Vienna. 1999
72
I5PR5
UNISPACE III - ISPRS Workshop on
“Resource Mapping from Space”
9:00 am -12:00 pm, 22 July 1999, VIC RoomB
Vienna, Austria
I5PR5
The interface includes:
the intermediary -frequency signal amplifier,
demodulator and decoder,
analog-to-digital and digital-to-analog converters for
the antenna control signals,
PC input/output interface,
an imitator of the satellite signal,
secondary power supply devices for the antenna
system.
The ScanER #3-1 station specifications are listed in the Table 1.
Antenna dish diameter - 1.6 m
Antenna rotation range:
azimuth - +/- 270 deg.
elevation - 90 deg.
Max. antenna rotation speed (not less):
azimuth -12 deg/s
elevation- 2.5 deg/s
Antenna positioning accuracy - 0.1 deg
Max. antenna positioner torque:
azimuth - 50 kgm
elevation - 30 kgm
Antenna positioner weight - 70 kg
Feed polarization - right hand circular
Input frequency - 8175 - 8225 MHz
LNA noise temperature - 55 K
Max. wind speed:
operational - 15 m/s
survival - 40 m/s
Temperature range - -50 ... +50 C
Table 1. The ScanER #3-1 station specifications.
R&D Center ScanEx developed and produced 3 modifications of - ScanER # 4 PGS for reception information from
complexes for Resurs-0 satellite series images acquisition: Resurs-01 # 4 on 8192 MHz input frequency'.
ScanER #3-1 PGS for reception information from The main differences of these complexes modifications are
Resurs-01 # 3 on 8192 MHz input frequency; shown in the table 2.
ScanER #3-2 PGS for reception information from
Resurs-01 # 3 on 465 MHz input frequency;
PGS name
Antenna dish
diameter, m
Input frequency',
MHz
Input data rate,
Mbit/s
Modulation type
Number of
receiving stations
ScanER #3-1
1.6
8192
7.68
QPSK
13
ScanER #3-2
3.0
465
7.68
QPSK
2
ScanER #4
2.0-2.3
8192
15.36
BPSK
3
Table 2 Modifications of Resurs-0 images receiving systems.
The PC/antenna interface is designed as a desktop unit
(33x33x32cm) with 220V, 50Hz single-phase power supply and
a PC extension board for ISA bus. The system indoors and
outdoors parts are connected with 50 m long cables.
With 1.6 m dish, the station parameters enable to receive data
with a bit error probability' not more than 10' 6 at elevations from
approximately 10 degrees and higher. The antenna rotation speed
is sufficient to track the satellite with practically no bit error rate
increase around the culmination for as high orbits as 80 deg.
Software
The station software consists of two basic MS Windows (95)
applications intended for:
the station and data acquisition control (Resurs
Receiver),
data quick-look and preliminary processing
(Scan Viewer)
and three additional MS Windows 95/NT applications: