This makes them useful for near and far range weather observation.Weather radar is always a hot topic among our clients.Because of the wavelength and frequency, S band radars are not easily attenuated. It operates on a wavelength of 8-15 cm and a frequency of 2-4 GHz.It guides at the time of cyclone tracking.The signal is more easily attenuated, so this type of radar is best used for short range weather observation.Because of the wavelength and frequency, the dish size does not need to be very large. It operates on a wavelength of 4-8 cm and a frequency of 4-8 GHz.It is used to detect thunderstorms and lightning.Because of the smaller wavelength, the X band radar is more sensitive and can detect smaller particles. It operates on a wavelength of 2.5-4 cm and a frequency of 8-12 GHz.Types Of Doppler Radars : Doppler radar can be divided into several different categories according to the wavelength which are L,S,C,X,K.DWR has the equipment to measure rainfall intensity, wind shear and velocity and locate a storm centre and the direction of a tornado or gust front.Based on Doppler principle the radar is designed to improve precision in long-range weather forecasting and surveillance using a parabolic dish antenna and a foam sandwich spherical radome.This variation gives direct and highly accurate measurements of the radial component of a target’s velocity relative to the radar.It does this by bouncing a microwave signal off a desired target and analyzing how the object’s motion has altered the frequency of the returned signal.If they are moving closer, frequency increases and vice versa. Doppler effect: When the source and the signal are in relative motion to each other there is a change in the frequency observed by the observer.
It is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance.It is a device which uses electromagnetic waves in the microwaves region to detect location (range & direction), altitude, intensity and movement of moving and non-moving objects.As the radar observations will be updated every 10 minutes, forecasters will be able to follow the development of weather systems as well as their varying intensities, and accordingly predict weather events and their impact.They will guide meteorologists, particularly in times of extreme weather events like cyclones and associated heavy rainfall.Other Radars: Srinagar, Patiala, Kufri, Delhi, Mukteshwar, Jaipur, Bhuj, Lucknow, Patna, Mohanbar, Agartala, Sohra, Bhopal, Hyderabad and Nagpur.West Coast: Thiruvananthapuram, Kochi, Goa and Mumbai.East Coast: Kolkata, Paradip, Gopalpur, Visakhapatnam, Machilipatanam, Sriharikota, Karaikal and Chennai.In addition, Ratnagiri will get a new C-band and Vengurla will get an X-band radar, each of which will operate for multiple purposes. Four X-band and one C-band radar will be deployed over Mumbai.Doppler radars of varying frequencies - S-band, C-band and X-band - are commonly used by the IMD to detect and track the movement of weather systems, cloud bands and gauge rainfall over its coverage area of about 500 km.It is the principal agency responsible for meteorological observations, weather forecasting and seismology.It is an agency of the Ministry of Earth Sciences, established in 1875.
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