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Proposal of Time Delayed Diversity (TDD) System for L-band Mobile Broadcasting Satellite and GPS Measuring method

机译:L波段移动广播卫星时分集(TDD)系统和GPS测量方法的建议

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摘要

This paper deals with the L-band time delayed diversity (TDD) system characteristics for mobile broadcast geostationary satellite orbit (GSO) system, which is measured by using the GPS (Global Positioning System) satellite. To design digital mobile broadcast satellite system with TDD concept, it must estimate attenuation characteristics by urban building, electrical light poles and trees etc. Southern orbital arc GPS satellite signals with elevation angle about 40 degrees data are used for propagation characteristics measurements, rather than actual GSO satellite. To overcome urban signal attenuation, the effect of TDD system characteristics are examined from processing measured GPS data. About 3~5 minutes delay time are adequate, and satellite visibilities can be improved about twice.
机译:本文研究了用于移动广播对地静止卫星轨道(GSO)系统的L波段时延分集(TDD)系统特性,该特性是通过使用GPS(全球定位系统)卫星进行测量的。要设计具有TDD概念的数字移动广播卫星系统,必须估算城市建筑,电线杆和树木等的衰减特性。仰角约为40度的南方轨道弧GPS卫星信号用于测量传播特性,而不是实际的。 GSO卫星。为了克服城市信号衰减,从处理测得的GPS数据中检查了TDD系统特性的影响。大约3到5分钟的延迟时间是足够的,卫星的能见度可以提高大约两倍。

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