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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Tables 214
From: Paul Hirose
Date: 2024 Mar 12, 13:42 -0700
From: Paul Hirose
Date: 2024 Mar 12, 13:42 -0700
An advantage of reducing sights from the DR position is that they can plotted as if simultaneous, even if separated by considerable time. You can dispense with the textbook technique of advancing a LOP to cross it with another. As I explained on January 23, "The principle is that if an observation gives, say, azimuth 180 and intercept 10 miles toward, it indicates the DR is 10 miles too far north. And that's true at other any time, to the extent that the DR is an accurate model of observer motion during the interval. So you can plot a round of sights as if they were simultaneous at some convenient time." -- Paul Hirose sofajpl.com
