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Cost effective satellite-based data broadcast systems for replacement of the present HF meteorological broadcast. Current status current HF meteorological broadcast at RTH Beijing.
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Cost effective satellite-based data broadcast systems for replacement of the present HF meteorological broadcast
Current status current HF meteorological broadcast at RTH Beijing • Sevendifferent frequenciesrent for Beijing Regional Meteorological FSK broadcast, including all frequencies used in daytime and nighttime.
Costs for source • Annual service charge: 300,000yuan. • Costs for destination devices • Antenna: about 20,000yuan
Moreover, aserious problem that faces RTH Beijing current isthatthe local carrier won’t support HF broadcast service no longer sinceOctober1.So, RTH Beijing are preparing to start continuously posting all the data, which are being distributed via HF broadcastcurrently,on CMA’s Internet Web server fromthis October.
Wide coverage: asatelliteoperating on a earth synchronous orbit can cover 1/3 of the area of earth • Terrestrial infrastructure independent
Highly Reliable and Availability above 99.9% • Lowbit error rate, 10-8–10-9
Costs for source • Annual chargefor a 1M broadcast band : 40,000yuan. • Costs for a remote • Antenna(Ku band): about 1,600yuan