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![The detail of the antenna of the differential GPS base station used as a static point for sending the correction signal to get the high precision Stock Photo - Alamy The detail of the antenna of the differential GPS base station used as a static point for sending the correction signal to get the high precision Stock Photo - Alamy](https://c8.alamy.com/comp/2H776JE/the-detail-of-the-antenna-of-the-differential-gps-base-station-used-as-a-static-point-for-sending-the-correction-signal-to-get-the-high-precision-2H776JE.jpg)
The detail of the antenna of the differential GPS base station used as a static point for sending the correction signal to get the high precision Stock Photo - Alamy
![Data Acquisition - Archive of Ground Penetrating Radar Data Collected During USGS Field Activity 13BIM01: Dauphin Island, Alabama, April 2013 Data Acquisition - Archive of Ground Penetrating Radar Data Collected During USGS Field Activity 13BIM01: Dauphin Island, Alabama, April 2013](https://pubs.usgs.gov/ds/0982/images/fig2_gps_systemLG.jpg)