Mumbai Activities: RADARS
Introduction
Probing Mesosphere, Stratosphere, Troposphere (MST) regions. Installed at Gadanki, Tirupati.
Main Features
3 element Yagi
32x32 array
spans 130x130 m
Tx power 2.5MW (Peak)
Beam width 3deg
For measurement of Atmospheric Parameters upto height of 100 Km.
2nd largest radar of its kind in the world.
Operational since 1994 at Gadanki village near Tirupati.
Users
ISRO for space vehicle launch
IMD for weather predictions
Atmospheric Scientists from Academic & Research laboratories
Doppler Sodar
Main Features
Uses Acoustic Sounding for monitoring atmospheric boundary layers
Accurate Windprofiles
Coverage upto 1 Km
Can be used for environmental monitoring Applications.
Tri-monostatic configuration
Frequency 1.8 KHz
Probing height 45m to 1000m
Users
Thermal and Nuclear power plants
High risk chemical industries
SAMEER has developed and installed Doppler Sodar for various applications at following sites:
National Atmospheric Research Lab (NARL) Gadanki, Tirupati
NPCIL, Kaiga, Uttar Karnataka
SPL, V.S.S.C Trivendrum
IITM, Pune
Systems DevelopedPhased array SODAR Phased array SODAR is a ground based remote sensing instrument to measure the wind speed, wind direction and turbulence of the lower part of the atmosphere, especially the boundary layer. The SODAR developed by SAMEER makes use of phased array antenna for generating the multiple beams. The antenna consists of many smaller elements of piezoelectric tweeters. Phased array technology provides the capability to electronically steer the sound beam in any direction and makes the system compact and easily deployable.
Phased array Mini-SODAR
Main Features
Probing height 15meters to 300 meters
Resolution 15m
Light weight and transportable
Used for site survey for wind energy
harnessing and environmental pollution dispersion
Wind Profiler
Ground based clear weather doppler radar
Frequency UHF band
Power 16 KW
Beam width of array antenna: 3 degrees
Phased array can switch to three beams
Radio Acoustic Sounding System (RASS)
Integrated with wind profiler, acoustic remote sensing gives temperature information.
Networking of the RASS systems being planned for prediction of climatic and weather parameters for India.