Height determining system for automatic GPS receiver

Details Height determining system for automatic GPS receiver Height determining system for automatic GPS receiver

1996-04-02

1998-02-24

Fulton, Christopher W.

Geometrical instruments

Distance measuring

By flexible tape

33758, 33760, 33768, 33770, 33668, 33394, G01B 310

Patent

active

057201064

ABSTRACT:
A tape measurement apparatus is provided for measuring the slope height of a GPS surveying system receiver, with an integral antenna, which is vertically suspended over a ground mark. A tape mounting hook is provided for securing the distal end of a tape measure in a location which is known precisely with respect to the phase center of the GPS receiver. The tape measure housing has a pointer arm of precisely known length which extends out from the tape measure housing in a direction opposite and parallel to the normalized line of extension of the tape from the housing. A distance scale imprinted on the tape compensates for the combined lengths of the housing and pointer arm so that a user can read the uncorrected slope height of the GPS receiver directly from the scale while applying the tip of the pointer arm to the ground mark.

REFERENCES:
patent: 2656606 (1953-10-01), Porter
patent: 3016617 (1962-01-01), Bricker
patent: 3064356 (1962-11-01), Kruse
patent: 3172205 (1965-03-01), Gammon
patent: 3354549 (1967-11-01), Fisher
patent: 4691444 (1987-09-01), Capps
patent: 4888881 (1989-12-01), Dudley
patent: 5159760 (1992-11-01), Spiegel et al.
patent: 5414942 (1995-05-01), Moore et al.

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