专利名称：Ranging system and method for satellites 发明人：PETER SIEBERT,DETLEF SCHULZ,GERHARD BETHSCHEIDER
申请号：AU2547200
申请日：20000209
公开号：AU754850B2
公开日：
sidselrasmussen
20021128
专利内容由知识产权出版社提供
摘要：The invention refers to an apparatus for generating a reference frequency depending on a timing information extracted from a data stream. In order to generate a carrier frequency in a user station of a satellite TDMA network at low costs which is accurate and stable and which meets stringent phase noise requirements, it is suggested to use at least one free-running oscillator. The frequency deviation with regard to the timing information extracted from the data stream is estimated by an estimation means. At least two oscillation signals are derived from the at least one oscillation means and are linked together by a linking means yielding said reference frequency. A frequency correction value is applied to at least one of the oscillation signals such that the timing information given by the reference frequency corresponds to the timing information extracted from said data stream.
申请人：SES ASTRA S.A.
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