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The
Indian Space Research Organisation (ISRO) played a crucial role in
2007, providing INSAT services to VSAT service providers, DTH, DSNG
vans, disaster management system, data relay transponder and mobile
satellite services. The demand for transponder has increased with
new DTH entrants such as Reliance, Sun Network, and Videocon already
applying for the transponder space. The launch of INSAT 4CR proved to
be fruitful for the broadcasters and ISRO also has big plans on the
anvil to provide more transponders for DTH transmission. It is
believed that 65 percent of the satellite capacity is used for cable
TV and DTH and 35 percent for providing other services. The
technology and delivery of content is moving from analog to digital
and thus increasing the need for larger bandwidth. Efforts are made
for using MPEG4 compression technology to create more bandwidth to
ensure that increased demand is met for DTH, HDTV, disaster recovery,
backhaul cell phone services, digital cinema, and IPTV. Currently
ISRO is the sole domestic satellite owner and operator of its band of
INSAT, leasing capacity to users on its own satellites and if
necessary also on foreign satellites.
The
major plans of ISRO in the 11th
five year plan include increasing the transponder capacity from 200
to 500, build and launch a spacecraft on contract for foreign
clients, and a first Ka-band INSAT multiple beam satellite GSAT-4
along with a navigation transponder to be launched in 2008. According
to ISRO, there is no shortage of transponders for DTH. All DTH
service providers have hired INSAT capacity as per their
requirements. If INSAT capacity is not available, ISRO/DOS leases DTH
capacity from other satellites as required. Number of channels
accommodated on the same capacity can be increased with advanced
technology like MPEG-4. ISRO/DOS at present has 10 communication
satellites. These include INSAT-2E, INSAT-3B, INSAT-3C, INSAT-3A,
INSAT-3E, GSAT-2, GSAT-3, INSAT-4A, INSAT-4B, INSAT-4CR, and
meteorological satellite Kalpana-1. METSAT is the first exclusive
meteorological satellite built by ISRO. So far, meteorological
services had been combined with telecommunication and television
services in the INSAT system. METSAT will be a precursor to the
future INSAT system that will have separate satellites for
meteorology and telecommunication & broadcasting services. This
will enable large capacity to be built into INSAT satellites, both in
terms of transponders and their radiated power, without the design
constraints imposed by meteorological instruments.
The
government also plans to air educational programs through EDUSAT. The
1950 kg EDUSAT has several new technologies. It carries five Ku-band
transponders providing spot beams, one Ku-band transponder providing
a national beam and six extended C- band transponders with national
coverage beam. It will join the INSAT system that already has more
than 130 transponders in C band, extended C band, and Ku-band
providing a variety of telecommunication and television services
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