Digital Cyclone Warning Dissemination System-Transmitter-Indoor
Receiving Antenna at Field
of the fast developing sectors all over the world is communication
technique, which is making the world smaller and smaller, but at the same
time, costwise, within the reach of common man. IMD is
maintaining the pace of fast changeovers in the field of communication.
Warning Dissemination System is one such fast changing mode of weather communications.
It is a direct satellite reception system
with selective addressing facility installed in cyclone prone areas. It
was started initially, during 1984-85,
Receiver at Field
Warning Dissemination System
This is a
direct broadcast of cyclone warning in regional languages to the likely affected
areas. There are 252 stations along Indian coast which are equipped to
receive the weather related warning.
Meteorological Department’s Area Cyclone Warning Centers (ACWCs) at
Chennai, Mumbai and Calcutta are responsible for originating the warnings
and transmit the weather warning messages through CWDS.
This service is first of its kind to be used as the recipients can be selectively addressed
through special CWDS receivers and area-specific messages can be sent to
the end users who are likely to be affected by adverse weather.
receivers are kept under standby mode and will be get automatically activated on receipt of the
weather warnings messages.
Even when, all
the other means of communication fails, the CWDS keeps on working with battery
back up power via INSAT satellite.
features of CWDS:
unique communication device first of its kind to be used for weather
•It has Sat. receiver with
selective addressing system installed at remote cyclone prone area.
•252 stations are installed in
Coastal Areas of Tamil Nadu and Andhra Pradesh coast, Gujarat, Orissa, West Bengal and other monitoring
•101 receivers using latest
digital techniques with message acknowledgement facility were added in
•Warnings are transmitted in
local Regional languages.
•Systems are designed to work
with backup batteries for about three days, in case of power failure due to cyclone.