发明名称 System for positioning in a location opaque to the signals of a satellite navigation system
摘要 According to the invention, the system comprises: at least three position beacons (3) arranged about said location (2) and emitting in the long-wave range, and an apparatus associated with the user (1) and including means for receiving, processing and displaying the information transmitted by said beacons (3).
申请公布号 US8698672(B2) 申请公布日期 2014.04.15
申请号 US20090867076 申请日期 2009.02.16
申请人 LAINE ROBERT ANDRÉ;ASTRIUM SAS 发明人 LAINE ROBERT ANDRÉ
分类号 G01S3/02;G01S1/08;G01S5/02 主分类号 G01S3/02
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