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METRAD is the novel X-Band weather radar with high sensitivity and large dynamic range, which enable the detection of even the weakest hydro-meteorological targets, such as drizzles or light snow.

The compact size and transportability of this complete X-Band system will make it the perfect choice for fixed installation and mobile operations, including rapid deployment for regional campaigns.

Application areas;

  • Meteorological measurements
  • Scientific weather data collection
  • Struggle against natural disasters like flood, landslide etc.
  • Harbors and Airports
  • Sporting events

The fully-calibrated dual-polarization STAR (Simultaneous Transmit and Receive) topology, the state-of the-art 16-bit signal processor unit and weather-radar algorithms optimized at X Band facilitate a wide-variety of applications such as nowcasting, flood or hail alerts, scientific research, and “filling-in” geographical areas that C-Band radars skip over.

In this context, METRAD provides full weather measurement radar capabilities in short and medium range.

The System is capable of 7/24 unattended remote operation; in a stand-alone mode, as well as in a network-based configuration, where both base-moment and resultant rain-product information is transmitted via 4G modem or SATCOM terminal.

It is possible to operate METRAD in both civilian and military airports as a Terminal Doppler Weather Radar, with optional Wind Products Software Suite, that enables the detection of not only hydro-meteorological targets, but also the Microbursts or Gust Fronts in rainy weather.

METRAD has been configured in a modular fashion, where almost all electronic equipment is designed as LRUs to enable the Operator/Maintenance Personnel to easily access these referred equipment.

The reverse-U-shaped radome is optimized for polarimetric applications with minimum cross-polarization and differential phase values at all angles. The pedestal enables a full hemi-spherical coverage and accurate antenna positioning.


The system compasses a magnetron-based transmitter and employs coherent-on-receive techniques to obtain high resolution in both Range and Doppler. But the system-level design has been carried out under the requirement of an easy transition to solid-state-based transmitter, if requested. Both transmit and receive RF chains possess automatic or user-initiated dynamic calibration topologies in amplitude and phase to minimize ZDR and ØDP errors.

The indigenous signal processor employs high-dynamic-range ADCs and DACs in order to cover for both magnetron-based and solid-state-transmitter-based operations.


The hardware that runs the data processing and rain-product-generation applications is a powerful COTS octa-core Xeon server with much room for further development and operation in high-resolution applications.

It is also possible to store a vast amount of both raw and processed data on this server, in order to facilitate subsequent data analysis for the Operators.

The User Interface Unit, a standard COTS laptop can either be used at the vicinity of the radar system via local connection to the system or at any convenient location where it is possible to make an Internet connection to the METRAD System.


The GUI and its indigenous software is developed for operation on multiple operating systems and optimized for assignment of various tasks and monitoring of multiple products, simultaneously.


The System is run by a custom Power Distribution Unit that runs a Continuous BIT feature throughout the System, where it continuously receives, processes, and records heat and current values of all supported electronic and electro-mechanical equipment. The Power Distribution Unit also contains a powerful software-controlled UPS to maintain continuous operation in case of a mains power failure or voltage irregularity.

The trailer is custom designed for METRAD and compliant to all affiliated rules to enable safe land transportation.


Frequency
9325 MHz

Pulse Repetition Frequency (PRF)
0.2 – 3 KHz (Selectable)

Pulse Width (PW)
0.33 µs-4 µs (Selectable)

Operational Range
>75 km

Data Output

  • Reflectivity (Z)*
  • Radial Velocity (V)*
  • Spectral Width (W)*
  • Differential Reflectivity (ZDR)
  • Differential Phase Shift (ɸDP)
  • Specific Differential Phase Shift (KDP)
  • Polarimetric Correlation Coefficient (ρHV)
  • Signal Quality Index (SQI


Not: Clutter corrected and uncorrected versions are available for all above parameters.

Meteorological Products

  • PPI : Plan Position Indicator
  • RHI : Range Height Indicator
  • CAPPI : Constant Altitude Plan Position Indicator
  • PCAPPI : Pseudo Constant Altitude Plan Position Indicator
  • MAX : Maximum Display
  • ETOPS : Echo Top Height
  • EBASE : Echo Base Height
  • VAD : Velocity Azimuth Display
  • VVP : Vertical Wind Profile
  • SRI : Surface Rainfall Intensity
  • VIL : Vertically Integrated Liquid
  • RSHEAR : Radial Shear
  • ASHEAR : Azimuthal Shear
  • ESHEAR : Elevation Shear
  • HCI : Hydro Meteor Classification

* Both vertical and horizontal versions available

Technical Specifications

Transmitter
TypeLong-Lifetime Magnetron with solid-state modulator (dynamically calibrated for optimum ZDR performance in STAR Mode)
Peak Power20 KW (Supports up to 50 KW)
Receiver
TypeMultiple-Channel Superheterodyne Receiver (dynamically calibrated in both amplitude and phase)
Noise Figure< 2.5 dB
Dynamic Range> 90 dB
Sensitivity< -111 dBm
Digital Receiver & Signal Processor
TypeModular multi-channel receiver
IF Sampling2 parallel channels, 16-bit per polarization
Processing ModeMulti-lag autocorrelation with pulse-pair or FFT
Antenna and Pedestal
Antenna Diameter1.5 m (Supports up to 1.8 m))
Antenna Gain41 dBi
Antenna Beamwidth1.5o
Antenna Coverage360o continuous in azimuth, -2o - +90o in elevation
Positioning Accuracy0.1o
Angular SpeedUp to 6 RPM
Dimensions and Weight of System on Trailer
Width255 cm
Length300 cm
Height380 cm
WeightLess than 2500 kg