| 摘要 |
The invention relates to a synchronisation system (SYN) for dating measurements from a sensor (CPi) relative to a reference clock (HR). The system comprises a main unit (UP) including: an emulator (EM) for emulating an artificial GPS satellite constellation having a time base based on a reference clock (HR), in order to generate a main signal (SgP) on a GPS frequency; processing means (TM) capable of delivering a radio signal (SgR) from the main signal (SgP) and of converting the GPS frequency of the main signal (SgP) to a radio frequency (Fr); and means (EV) for transmitting the radio signal (SgR). The system also comprises a secondary unit (USi) positioned at a distance (Di) from the main unit (UP), comprising: means (ERi) for receiving the radio signal (SgR); frequency changing means (TFi) capable of delivering a signal (SgE) that can be used by a GPS receiver; a GPS receiver (RPi) comprising a local clock (HLi), and slaving means (ASSi) capable of decoding the usable signal (SgE) and of synchronising the local clock (HLi) with the reference clock (HR); and a sensor (CPi) capable of taking measurements and dating said measurements relative to the local clock (HLi) of the receiver (RPi). |
