GPS survey instrument

Details GPS survey instrument GPS survey instrument

1997-05-12

1998-10-13

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

701216, H04B 7185, G01S 502

Patent

active

058219005

ABSTRACT:
A GPS antenna (11) is removably attached to an electronic survey instrument or station (1). The GPS antenna (11) is positioned away from the mechanical center point (P1) of the station (1). The station (1) has an operation unit that calculates the position (i.e., the GPS coordinates) of the mechanical center point (P1) of the station (1), based on the relative position of the center (P2) of the GPS antenna (11) with respect to the mechanical center (P1) of the station (1), the position of the center (P2) of the GPS antenna (11) obtained by a GPS, and the orientation of the station (10) relative to a reference direction.

REFERENCES:
patent: 5077557 (1991-12-01), Ingensand
patent: 5233357 (1993-08-01), Ingensand et al.
patent: 5379045 (1995-01-01), Gilbert et al.
patent: 5477228 (1995-12-01), Tiwari et al.
patent: 5519403 (1996-05-01), Bickley et al.
patent: 5519620 (1996-05-01), Talbot et al.

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