Features

• The radar systems are capable of detecting small targets like rubber boats to quite large and nearby targets, with an ability to handle a large dynamic range of signals in addition to being able to suppress clutter.
• 21 feet antenna with switchable polarization, dual unit frequency diversity X-band radar (referred to a X-band radar) or a combination of Dual unit frequency diversity X-band radar and a Single S-band radar (referred to a X/S band radar)
• Features such as programmable Pulse Repetition Frequency, programmable Pulse Width and random stagger are available to enable task-specific set-up of the Receiver- Transmitter.
• The radars are characterized by high resolution, wide receiver dynamic range, noise reduction facilities, built-in test equipment and the ability to perform remote servicing activities. Frequency (and time) Diversity is used in the X-band radar to de-correlate sea clutter, eliminate small target fluctuations, reduce multi path (lobing) effects and thereby improved detection of small targets at all ranges
• Digital FTC, sweep-to-sweep correlation (white noise suppression), sweep-to-sweep integration are used to improve signal-to-noise ratio.
• Target Trackers optimized for marine applications for all weather detection and tracking of small targets in cluttered environments.

The S-Band DWR Mk II System has been developed by BEL based on the technology inputs from ISRO. This has been developed as a part of the national effort (involving IMD, ISRO, NAL & BEL) in positioning a network of Doppler Weather Radars across the entire country and thereby ensuring effective weather forecasts throughout the country.

This radar provides long range weather surveillance up to 500 kms. It operates in S-band and is capable of detecting and estimating the parameters of cyclone and other severe weather conditions. This Radar can forecast severe weather conditions so that necessary preventive steps could be taken to alleviate the impact of such natural disasters in terms of loss of life and property.

Dual Polarimetric capability has been incorporated for effective rainfall estimation.

This coherent radar estimates three weather base products like, reflectivity (Z), mean velocity (V) and spectral width (σ) in single polarization mode. In Dual Polarisation mode, the radar estimates additional base products like, Differential Reflectivity (Zdr), Differential Phase Shift (φdp) and Correlation Co-efficient (ρ). Various primary & secondary weather data products for meteorological & aviation applications are generated using these base products.

The C-band polarimetric Doppler Weather Radar is a state-of-the-art indigenous Radar. The Radar development is an initiative by ISRO as a national effort to design and develop indigenous Weather Radars to meet the country’s weather forecast requirements. The vision is to establish a network of Weather Radars to seamlessly cover the entire country and thereby ensure effective detection of severe weather conditions, cyclone warning and appropriate weather forecasts. Dual polarimetry is implemented for effective rain estimation and hydrometeor classification.

This radar provides long range weather surveillance up to 500 kms. It operates in S-band and is capable of detecting and estimating the parameters of cyclone and other severe weather conditions. This Radar can forecast severe weather conditions so that necessary preventive steps could be taken to alleviate the impact of such natural disasters in terms of loss of life and property.

FEATURES

• Dual polarimetric capability- simultaneous transmission and reception
• Solid state Modular based Transmitter using high power klystron
• High gain Antenna
• Elevation over azimuth Servo system
• Low noise RF Frontend
• Wide Receiver dynamic range
• Digital receiver
• More than one ambiguity resolving technique
• GUI based Radar control with comprehensive BITE
• Automatic transmission of weather data products