Fixed head Doppler radars - Tech-Bel

Weibel Scientific
Solvang 30
3450 Allerød
Denmark
Fixed head
Doppler radars
Network ready for the future
weibel.dk
1.
Introduction
The network ready SL-xxxP family of fixed head Weibel Doppler Radar Systems are highly portable and
based on state-of-the-art radar technologies. Transmitting and receiving antennas are microstrip arrays
and all electronic components are integrated in the Antenna / Processor unit.
The new SL-xxxP family of Doppler Radars can connect directly to your TCP/IP network - and can be
accessed and controlled/monitored from any standard PC on the network – running the WinDopp
software.
This new unique feature enables some new configurations:
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Easy access to remote un-manned radars through a standard interface.
A super user/supervisor can easily assist radar operators in the field.
Remote assistance over the internet.
Multiple radars and WinDopp PCs networked together for maximum flexibility.
The internal sample memory ensures safe operation on networks with low bandwidth.
The fixed head Doppler Radar Systems are based on the renowned SL-520M/W-700 family and are
designed to operate under field conditions. The SL-xxxP family incorporates the W-700 signal analyzer
functionality into the antenna and a standard PC. The rugged mechanical system design combined with
a robust electronic design ensures high reliability and resistance to blast and vibrations from the
weapons firing.
These radar systems operate on the Doppler principle. The radar antenna transmits a microwave
Continuous Wave (CW) signal, receives the echoed signal from the target, and subtracts the
transmitted signal from the received signal generating the Doppler signal. The Doppler signal is
amplified and digitized in the built-in processor.
The digitized Doppler signal are stored in the digital memory. The velocity is calculated using Fast
Fourier Transformation (FFT) and digital signal processing. The use of FFT-based calculation enables
the system to measure on all types of ammunition and calibers including:
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Bullets
Artillery
Mortars
Tracers
Base bleed ammunition
Anti-tank rounds
APFSDS
Rockets
The system is designed to measure velocities from 30 to 3000 m/s with an over-all system accuracy
typically better than +/- 0.05%. The system can store over 1000 muzzle velocity results in a non-volatile
memory.
The Weibel Doppler radar systems incorporate a unique self-calibrating technology as an option. With
this option, the system does not need any calibration during its entire life cycle, calibrating itself with the
speed of light as a reference.
2.
System overview
The system consists of the a Doppler radar antenna, with built-in acoustic trigger, processor, and power
supply, an optional Muzzle Flash detector FOT-2, peripherals (Power supply, laser printer and
Instrumentation Controller) and cables. The Doppler radar system must use all of the Weibel
manufactured items; however, the peripherals can be changed. The host controller must be a Windows
compatible computer with the WinDopp control and processing software installed.
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2.1.
Specifications
Fixed Head Doppler Antennas1
Antenna
Antenna Type
Output Power
Performance factor
Tracking range3
155 mm projectile
7.62 mm projectile
Antenna gain
Antenna beam
Dimensions
Image Rejection
Weight
Transmit supply
General
Power Supply
Transmitter type
Frequency
Frequency variation
Polarization
Receiver number
Noise figure
Phase noise
Trigger source
Selfclibration
Motion comp.
Data acquisition
A/D Converter
Anti aliasing filter
Sampling rate
Timing accuracy
Trigger source
Signal memory
Measuring Modes
Processor
Central processor
Program memory
Signal Processor
System interface
Environment
Humidity
Temperature range
1
2
3
4
5
6
7
SL-520P
0.4 ± 0.1 Watt
179 ± 2 dBm²/s
SL-525P
0.4 ± 0.1 Watt
185 ± 2 dBm²/s
SL-15028P
15 ± 2 Watt2
206 ± 2 dBm²/s
SL-30031P
30 ± 2 Watt2
215 ± 2 dBm²/s
2 - 4 km
0.1 – 0.2 km
20 ± 1 dB
19°x9° ± 1°
175x175x50 mm
No
4 kg
Internal
4 - 6 km
0.2 – 0.4 km
25 ± 1 dB
9°x9° ± 1°
350x175x50 mm
No
8 kg
8 - 12 km
10 – 15 km
1.5 – 1.8 km
1.5 – 2.2 km
28 ± 1 dB
31 ± 1 dB
9°x4.5° ± 1°
4.5°x4.5° ± 1°
350x350x50 mm
750x350x50 mm
Yes
Yes
13 kg
23 kg
From External Power Supply4
18-32 VDC, 16 Amps max, or 110/220 VAC via external Power Supply
Continuous Wave, synthesized solid state
X-band, factory adjustable between 10.400 and 10.550 GHz
5 user selectable frequencies, ± 6 MHz around main frequency (optional)
Vertical
1 with AGC
2.0 dB ± 1 dB (8.0 dB for SL-520P)
-100 dBc/Hz @ 10 kHz offset5
Internal acoustic trigger or optional external muzzle flash detector
SeCa: Built-in Velocity calibration generator (Optional)
MoCo: Built-in active motion Compensation (Optional)
12 bit Analog to digital converter
Software controlled
0.6 – 3000 µsec, on 0.2 µsec steps
1 sample or 10 ppm
Doppler signal, External
128 kByte to 16 MByte
Single, Multi & Burst6
Intel 80386EX
2 MByte FLASH memory – uploaded from the instrumentation controller
Analog Devices ADSP-21065 Floating Point DSP
High Speed RS-422 or optional TCP/IP Ethernet 10/100TX7
0 to 100% ,non condensing
-20°C to +50°C (operating), -40°C to +65°C (storage)
Weibel reserves the right to change the specifications as long as the overall performance is not affected
All specifications are typical and can not be guaranteed under all conditions. Not all specifications can be met
simultaneously
Low Power versions are also available
Calculated maximum tracking range under ideal conditions, and no aspect angle
Only for high power versions
Lower phase noise oscillators are available for long range and flat trajectory applications
Up to 10,000 rounds pr minute
Ethernet connection through power supply
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2.2.
IC-700 Specifications
IC-700 Instrumentation controller
Minimum specs
Processor
Memory
Hard disc
Monitor
Operating system
Back up
System interface
Control software
Additional interfaces
Power consumption
2.3.
1.4 GHz Pentium
128 MByte RAM
20 GByte internal
15” SVGA color monitor
Windows XP or Windows 2000
CD-RW
TCP/IP Ethernet or RS-422
WinDopp
1 serial RS-232c, 2 USB ports
<500 Watt
The function of the sub sections
SL-xxxP Block diagram
Antenna:
Microstrip based Doppler radar antenna including:
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All microwave components including front end narrow band filter. The narrow band
microwave filter ensures that the receiver is not saturated by other radars such as high
power pulse radars. The SL-xxxP also includes front end Low Noise Amplifier, I/Q mixer
and I/Q low noise base band amplifier
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Built-in acoustic trigger
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Trigger system
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Data acquisition and data processing section for digitization and intermediate storing of
the Doppler signal before transfer to the IC-700 for processing. The hardware and
software is based on the renowned W-700 Doppler radar analyzer which has been used
worldwide for tests on proving grounds and in private companies. All processing
algorithms are the same as used in the W-700.
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The Doppler signal are digitized and temporarily stored in the internal sample memory
during the measurement. The digitized signal are transferred to the IC–700 computer
after the measurement for further analysis and permanent storage. This reduces the
required bandwidth on the Ethernet connection to the antenna, and secures against loss
of data due to network limitations.
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The SL-xxxP software is programmed into non-volatile memory, but the software can be
updated via the external interface from the Host-PC without opening the SL-xxxP system box.
SeCa:
Self-calibration, the SL-xxxP system incorporates a unique self-calibration technology, and
calibrates the measured velocity with the speed of light as reference.
With this optional feature the system does not need regular calibration throughout its entire
lifetime.
MoCo:
Motion Compensation, the SL-xxxP system includes an optional active motion compensation
allowing the system to accurately compensate for the platform motion (i.e. when the system
is mounted on a mobile platform), this feature also allows accurate compensation for the
actual gun jump when the radar system is installed directly on the gun system.
FOT-2:
Muzzle flash detector starts the storing of the Doppler signal in the SL-xxxP Radar System.
The FOT-2 is optional.
CAB-114:
Power & communication cable between the SL-xxxP and the IC-700, 76 meters.
CAB-101:
Trigger cable, 20 meters.
IC-700:
Windows compatible computer controlling the W-700 Doppler analyzer using the Weibel
control & analysis program - WinDopp.
WinDopp:
Windows based Control & Analysis software.
Laser printer:
HP Laser printer (or similar). The laser printer is used for printing, plotting, and screen
dumps.
Because of the structured hardware design and modular software, the system is designed for future
modifications and upgrades.
2.4.
Configurations
The direct network connectivity of the SL-xxxP antennas allows for new flexible configurations including:
■ Multiple radars controlled from a single IC-700
■ Multiple radars controlled from multiple IC-700 over the network
■ Remote operation, with the radar placed at a remote location (i.e. in the hazard zone of the test)
■ Remote supervision and/or diagnostics assistance (i.e. through the internet)
Radar 2
Radar 1
Ethernet
Operator 1
Wide Area Network
(Internet)
Operator 2
(Expert/Supervisor)
Advanced configuration - Remote control through internet
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Configuration
Point to Point
Basic
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1 IC-700 and 1 SL-xxxP radar.
High speed RS-422 or optional Ethernet connection.
Ethernet
WinDopp
IC-700
Multi users
Multi user
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1 SL-xxxP controlled from local IC-700 (operator).
Data displayed/monitored on second workstation
(mission control/supervisor).
Ethernet
WinDopp
IC-700
WinDopp
IC-700
Operator
Supervisor
Multi radars
Multiple radars
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Multiple radars are controlled from single IC-700.
For ex. muzzle velocity radar and long range radar.
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Can also be configured for multi user/supervisor
configuration
Ethernet
WinDopp
IC-700
Radar network
Radar 1
Multiple radars in network
Radar 2
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Multiple radars controlled from multiple IC-700, through
standard TCP-IP network
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Can also be configured for multi user/supervisor
configuration
Ethernet
WinDopp
IC-700
Operator 2
Remote
operation
Radar 1
WinDopp
IC-700
Operator 1
Radars accessed through internet or WAN
Radar 2
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Ethernet
WinDopp
IC-700
Operator 1
Remote control of 1 or multiple radars through WAN.
For control of radar placed in danger area
For remote diagnostics/support through Internet
Wide Area
Network
(Internet)
WinDopp
IC-700
Operator 2
(Expert/Supervisor)
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3. WinDopp Control and Analysis software
New Windows based Control and Analysis software for Weibel Doppler Radar Systems.
3.1.
Main features
All data analysis and curve fitting runs
entirely on a standard Windows PC
No processing limitations
50 % overlap on all measurements
No limitation in FFT size
Calculations based on verified
processing software from Doppler
analyzer
Same processing as in WinTrack
Fast processing using high-speed
computers and interfaces
Spin processing
WinDopp - Setup screen
3.2.
Automated measurement flow
Reduces user interaction during the
measurement and analysis procedure, thus
ensuring:
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3.3.
That all data gets saved
That the main data validation screen is
shown
Easy to display of the major results of
the measured rounds
Easy to load previous series and see
results
User defined graph displays
A new multi graph capability allows the
software to display several graphs together.
The operator can select from a list of
predefined layouts or create his own.
WinDopp – Validation graphs & session log
WinDopp – Multigraph example
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3.4.
WinDopp versions & Features list
Version
Features
Full
“Lite”
Acquisition control GUI8
Automated measurement flow
Automated data storage
Automated session control
Full session report
Measure mode: Single, burst & multi
Advanced curve fitting
Automated Muzzle velocity calculation
User specified graphical presentation
User specified numerical output
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Advanced spin analysis
Inbore measurement
Trajectory model
Drag calculation
Supported analyzers
W-700 and W-700i
W-6809
SL-xxxP systems with processor in the Antenna
W-680i and W-680ii10
W-1000 and W-1000i7
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Two versions of the WinDopp software are available - the “Lite” version is primarily used with the smaller and
less powerful antennas or when the limited features satisfy the user’s need.
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10
Graphical User Interface
Through GPIB or serial interface
Through Weibel Link (WLINK) interface, USB-WLINK adaptor (optional)
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Weibel Scientific
Solvang 30
3450 Allerød
Denmark
NORTH AMERICA:
44001 Indian Fields Court
Lansdowne, VA 20176-1641
USA
Phone: +1-571-278-1989
Fax:
+1-425-699-8211
E-mail: main@weibel-equipment.com
HEADQUARTERS:
Solvang 30
3450 Allerød
Denmark
Phone: +45-7010-8511
Fax:
+45-7010-6558
E-mail: main@weibel.dk
Web: www.weibel.dk
Doc ID: CS-1002-007
Prepared by: FK
Date: DEC 2007
Expires: JAN-2009
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