专利名称：Robust low-frequency spread-spectrum
navigation system
发明人：Stephen F. Smith,James A. Moore申请号：US11583374申请日：20061017公开号：US07626544B2公开日：20091201
专利附图：
摘要：Methods and apparatus are described for a navigation system. A processincludes providing a plurality of transmitters distributed throughout a desired coveragearea; locking the plurality of transmitters to a common timing reference; transmitting a
signal from each of the plurality of transmitters. An apparatus includes a plurality oftransmitters distributed throughout a desired coverage area; wherein each of theplurality of transmitters comprises a packet generator; and wherein the plurality oftransmitters are locked to a common timing reference.
申请人：Stephen F. Smith,James A. Moore
地址：Loudon TN US,Powell TN US
国籍：US,US
代理机构：Brinks Hofer Gilson & Lione
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