Pole-tilt sensor for surveyor range pole
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United States of America Patent
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Apr 30, 1996
Grant Date -
N/A
app pub date -
Oct 27, 1994
filing date -
Oct 27, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A surveyor range pole, for example, equipped with a GPS receiver and antenna mounted at the top end, a battery mounted at the bottom end to better balance the pole, a tilt sensor and a direction sensor. The tilt sensor and direction sensor provide information about the vector that lies between the top and the bottom points of the range pole. The GPS receiver computes the position of the top end of the range pole from GPS satellite signals received by the GPS at the top end, and then computes the position of the bottom end of the range pole with the vector information. A variable length, telescoping range pole includes a linear transducer for automatically measuring the overall length of the range pole and contributing that length information to the vector calculation.
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