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LAP®8000

This model of the LAP® Series Radar Wind Profilers operates on a lower radio frequency in the 400 to 500 MHz range and achieves the highest measurement range. With its large antenna area of 28 m² and with a transmit power of 2000 W it provides wind measurements up to a height of 8 km above the ground. Multiple radio-frequency variants are available for use in different frequency allocation regions worldwide.

Features
maximum height 8 km above the ground
radio frequency in the 400 to 500 MHz range
antenna aperture 28 m², no moving parts
transmit power 2000 W
5 beams, 4 horizontally tilted and 1 vertical
SIRP digital IF processor for unmatched performance
powerful software for Windows 11, 10, Server 2022/2019
extensive self-test and real-time monitoring
modular, robust design
long service life

Specifications
Parameter
Specification
Operating frequency
437.5 MHz or 449 MHz.
Other operating frequencies available on request.
Antenna type
Flat antenna with coaxial-collinear phased array.
Grid of 2 x 12 antennas stacked in 2 layers.
Electronically steered.
Antenna aperture
28 m²
Antenna radiating elements
216 elements
Number of simultaneously radiating phased-array elements.
Antenna directivity gain
For 437.5 MHz
29.2 dBi
For 449 MHz
29.3 dBi
Number of beams
5 beams: 4 oblique beams and 1 vertical beam.
Beam tilt angle
15.0°
Tilt angle from zenith for the oblique beams.
Beam width
For 437.5 MHz
7.0°
For 449 MHz
6.8°
Full width between -3 dB points in one-way transmission pattern.
Transmitter output power
2000 W
Peak envelope power, nominal.
Pulse width
400 to 3340 ns
Configurable via software.
Minimum height
200 m
Dependent on pulse width, meteorological conditions, and surrounding clutter environment.
Maximum height
Up to 8 km in clear air and beyond in precipitation.
Dependent on configuration, meteorological conditions, and environment.
Height resolution
60 to 500 m
Configurable via software. Defined by pulse width.
Wind speed accuracy
< 1 m/s
Wind direction accuracy
< 10°
Measurement range of horizontal wind components
-100 to 100 m/s
Larger measurement ranges configurable via software.
Measurement range of vertical wind components
-20 to 20 m/s
Larger measurement ranges configurable via software.
Averaging time
3 to 60 min
Configurable via software. Typically 10 to 60 min. Running averages supported with update intervals down to 1 min.
Output data
Horizontal wind speed and direction, wind components U/V/W, standard deviations of wind, backscatter, precipitation fall speed, moments, spectra, time series of I/Q samples, quality flags.
Data displays
Wind barbs, vector plots, time vs. height color plots, profile plots, time series plots, spectra plots, tabular displays.
Data reprocess
Output data can be recalculated by reprocessing time series, spectra, moments or main data.
Configuration
Configuration with graphical user interface.
No manual editing of configuration files required.
Real-time monitoring
Real-time monitoring during measurement includes monitoring of internal voltages, currents, temperature, RF power.
Self-test
Fully automatic self-test includes testing of internal voltages, currents, RF power, system noise, dynamic range, external RF interferences.
File formats
Supported output file formats include standard ASCII formats, NetCDF, WMO BUFR, NOAA Winds, CMA (China), MRI (Japan), KWPN (Korea), LAP-XM compatible, Avimet XML, user-defined formats.
Other and customized output file formats available on request.
Network data output
Automatic data transfer to external servers via FTPS, FTP, TCP, UDP, shared network folders.
Network plot output
Automatic creation of plot image files and transfer to external servers via FTPS, FTP, shared network folders.
Live plots via web browser, customizable.
Network time synchronization
Automatic time synchronization with an external network time server via NTP.
Network supervision
System status can be retrieved via SNMP or status files.
Operating system compatibility
Windows 11, Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2022, Windows Server 2019, Windows Server 2012 R2, Windows Server 2012, Windows Server 2008 R2.
Dimensions of antenna structure
7.4 x 7.4 x 1.8 m
Installation area for antenna structure
11 x 11 m
Including guy wires and ground-mounting, without RASS extension.
Operating conditions for outdoor components
Temperature: -40 to 50 °C.
Relative humidity: 0 to 100 %.
Operating conditions for indoor components
Temperature: 10 to 35 °C.
Relative humidity: 0 to 80 %, non-condensing.
Power requirements
AC power input: 100 to 240 V, 50 to 60 Hz, single-phase, 3600 W.
Average power consumption: typically 200 to 750 W.
Accessories
RASS Extension for LAP®8000

This RASS Extension adds the capability for measuring temperature profiles to a LAP®8000 Radar Wind Profiler.

Uninterruptible Power Supply (UPS)
for LAP®8000

The UPS provides backup power to a LAP®8000 Radar Wind Profiler for at least 20 minutes at full system operation.

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