First C&GS electronic base line measurements.
Base crossings by aircraft and ship over Shoran network.
Minimum value from two range-range stations gives distance.
Base line party of P. C. Doran
Image ID: theb1680, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Alaska, Bering Sea
Photo Date: 1951
Credit: C&GS Season's Report Doran 1951-84
• High Resolution Photo Available
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