User's Manual Part 1

T ECHNICAL D OCUMENTATION P ROTECTING P EOPLE AND A SSETS
®
D
ATE
:
27
M
ARCH
2017
|
V
ERSION
:
1.8
4
R
ANGER
®
-
X5
R
ADAR
S
YSTEM
(M
OBILE
)
F
UNCTIONAL
O
VERVIEW AND
T
HEORY OF
O
PERATION
EEC
®
|
C
OMPANY
P
ROPRIETARY
Figure 1. 1.8-Meter Ranger-X5 Variant
The standard Ranger-X5 system configuration includes an elevation over azimuth pedestal
providing on-board, environmentally sealed, and controlled electronics housing for the
transmitters, receivers, and signal digitizer in conjunction with a NEMA 4 grade environmentally
controlled ground interface enclosure. The ground interface contains the system power supplies,
EEC IQ2 signal processor, Local Control Interface (LCI) station, Radar Control Unit (RCU)
Computer running EEC COBRA software, EEC EDGE software system workstation, and
associated communication interfaces. The ground interface enclosure is not required with
customer furnished facilities.
The standard configuration uses two 500-Watt transmitters located on the pedestal above the
elevation rotational axis to support Dual Polarization operation. This design eliminates the need
for waveguide switches, waveguide rotary joints, or a power splitter, allowing for complete
diversity in H/V measurement schemes and minimum path loss in both the transmission and
reception path.
The radar system provides standard precipitation intensity, turbulence, and velocity modes of
analysis with extremely high precision in all modes of operation. Normal radar control and data
processing utilizes the EDGE Radar Control and Analysis Software. A separate technical
manuals describes the functions of EDGE.
The transmitter provides a 500W peak RF power pulse (in each channel) with an adjustable pulse
width from 0.2 and 100.0 microseconds (µs), providing excellent weather detection at range in all
modes. The transmitter radiates in staggered Pulse Repetition Frequency (PRF) modes at 3:2,
4:3, or 5:4 ratio allowing dual PRF sampling by the digital signal processor to produce maximum
unambiguous velocities of up to ≥90 meters/second.
The EEC IQ2-IFD Intermediate Frequency Digitizer ingests and digitizes the received radar return
in 16-bit resolution. The receiver design utilizes state-of-the-science components to optimize