Gps GCP multi camera tag

I make photogrammetric readings and use Pix4D software.
I am looking for solutions for several applications:

  • I am looking for a GPS system that can give me precise coordinates on the ground to inform my 3D models: ground control points
  • I am looking for a GPS system for geo referencing my photos on the ground or on my drone for example with a Sony &.
  • I am looking for a GPS system to geo referencing my photos, 4 or 5 Sony cameras & simultaneously with simultaneous triggering - ULM embedded set
    Of course the same equipment must be able to answer all the requests …
    Thank you for your help