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Articles

1985: Vol. LXII, No. 2

Daily System Check of Electronic Position Systems

  • Lewis A. Lapine
Submitted
July 31, 2015
Published
2015-07-20

Abstract

The use of electronic navigation systems onboard NOS survey vessels necessitates one or more daily system checks to ensure the operational precision of the systems. In most instances, a position fix by visual methods is used for the daily check. The paper will first establish precision estimates for four fundamental measurements used in visual fixes and then present a discussion of six basic visual methods for daily system checks. The visual methods will be examined for their individual merits, drawbacks and estimated precision.