The full frequency built-in measuring antenna is a four system full frequency built-in measuring antenna covering GPS, GLONASS, BDS and Galileo, and can be compatible with 4G and WiFi / BT working frequency bands to meet the requirements of multi system compatibility of current measuring equipment. It can be widely used in Geodetic mapping, oceanographic survey, channel survey, dredging survey, seismic monitoring, bridge deformation monitoring, landslide monitoring, wharf container operation and other occasions.

GPS can't 100% positioning, let alone believe the nonsense of indoor positioning. Unlike mobile radio, GPS can receive signals everywhere. Many things will affect GPS reception, including the distribution status of sky stars, buildings, viaducts, radio waves, leaves, thermal insulation paper, etc. there are too many things that will affect. Generally speaking, looking up from the GPS position, the area of the sky that can be seen is the area that GPs can receive signals.

1. The antenna part adopts the multi feed point design scheme to realize the coincidence of phase center and geometric center, so as to minimize the influence of the antenna on the measurement error.

2. The antenna unit has high gain and wide pattern beam, which ensures the reception effect of low elevation signal, and can still receive the satellite normally in some occasions with serious occlusion.

3. With anti multipath choke plate, it can effectively reduce the influence of multipath on measurement accuracy.

4. The antenna can be compatible with 4G and WiFi / BT working bands.

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