NAVAL DIVISION
NADIR Planar Scanner
Radar Cross Section Measurement System
An advanced tool to measure the RCS of full-size components and
scale model ships
www.idscorporation.com/naval
NADIR Planar Scanner
NADIR Planar Scanner
Composition
NADIR Planar Scanner is a cost effective, flexible and
transportable measurement system which provides
accurate radar cross section (RCS) assessments.
Measurements can be performed indoors in anechoic,
partial anechoic or non-anechoic environments or outdoors
in suitable test areas free of large obstacles. NADIR Planar
Scanner is a near field measurement system featuring
a planar scanner to acquire 2D/3D synthetic aperture
radar (SAR) images of the target and converts them to
undistorted far field like radar images. The measurement
procedure has been extensively validated and provides
sensitivity and accuracy comparable to traditional compact
and far field ranges.
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Operation and Performance
Technical Specifications
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Can be used indoors or outdoors (depending on the
size of the component and the measurement sites
available) to measure full size components and scale
models
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Measurement sensitivity
platform requirements
As NADIR Planar Scanner is configurable in regards to
frequency range and planar scanner dimensions, the
following specifications are given as an example:
Measurement System Capabilities
Frequency Range
1 – 40 GHz coherent
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Measurements are performed at near field ranges. The
resultant near field measurements are converted to far
field using spherical wave compensation by means of
a proprietary algorithm
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compliant
with
stealth
High speed and stable hardware can provide accurate
and reliable RCS measurements in little time (a few
minutes for 2D images, about 90 minutes for a 3D
image)
High resolution radar imaging enables environmental
clutter, multipath contributions and target supports to
be identified, spatially located and filtered out, thus
isolating useful target returns and scattering centers
in the radar image
Total synergy and compatibility with IDS’s Ship EDF
RCS prediction tools. Together they are effective aids
in the design cycle of naval platforms
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RF and Antennas - consisting of a vector network
analyzer (VNA) to generate and acquire RF signals and
a specialized radar head including sets of antennas for
different bandwidths
Antenna positioner – a 2D wide planar scanner to
position the TX/RX in a planar surface in horizontal
and vertical directions
Target positioner – a low RCS support and rotational
positioner
Acquisition control software – for hardware control,
real time configuration and data storage
Post-processing software – for image generation and
RCS estimation
TX/RX Polarization
HH, VV, HV, VH (one at a time)
Measurement Range
From a few meters up to
hundreds of meters
Resolution (Range
and Cross-Range)
Down to 5 cm depending on
frequency band and scan length
RF Performance
Waveform (VNA)
Stepped LFMCW with PRF
agility
System Noise Figure
<10 dB @ RX port
NERCS (Noise
Equivalent RCS, or
minimum detectable
RCS at the target
distance)
< -50 dBsm @ 35m in the Ku
and Ka frequency bands
< -60 dBsm @ 35m in L, S, C
and X frequency bands
Transmit Power
up to 40 dBm
Minimum measurable
-35 dBsm @ 35m, with about
RCS with 20 dB Signal- ±1 dB accuracy with respect to
to-Noise Ratio (SNR)
receiver noise interference signal
Pulse Operation
Pulse Repetition
Frequency (PRF)
Range Gate Pulse
Width
12_REV_1.7
Up to 50 MHz
5 ns – 80 µs at 5ns steps
Aut. SMD M_D SSMD 0076491
IDS Ingegneria Dei Sistemi S.p.A.
Via Enrica Calabresi 24, 56121 Pisa (PI) Italy
Tel. +39 050 31241 Fax +39 050 3124201
[email protected]
www.idscorporation.com/naval