Download or read book Analysis of Visibility Observation Methods written by Frederick C. Hochreiter and published by . This book was released on 1969 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report concludes the first phase of the objective visibility observation task. It was primarily a literature search of state-of-the-art in visibility observations and measurements. This portion of the task was designed to provide background information on which to base future phases directed toward automated visibility observations.