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Long Backsight or long resection

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thebionicman
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@jim-frame I have a half dozen versions I use for cadastral work. The approximations match precise compution well and help isolate probable sources of error.


 
Posted : October 2, 2021 3:00 pm
rj-schneider
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Posted by: @mark-mayer

done correctly, aught to work just fine

done correctly, ought to work just fine.?ÿ?ÿ


 
Posted : October 2, 2021 3:48 pm
nettronic
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@bill93 Thats what I thought. Thanks.

?ÿ


 
Posted : October 2, 2021 5:27 pm
nettronic
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@jph I also backsight from whence I came. And usually do a stake to another point just to make sure there was no angular error.

?ÿ

Thanks


 
Posted : October 2, 2021 5:29 pm
field-dog
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Posted by: @thebionicman

A good exercise is to perform a strength of figure calculation using stanard formulas from old geodesy text books.

Could you post a figure of strength calculation?


 
Posted : October 3, 2021 6:13 am

bill93
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Posted by: @thebionicman

perform a strength of figure calculation using stanard formulas from old geodesy text books. It will open your eyes to the other effects of geometry

The strength of figure I remember seeing only used angle measurements for propagating one known side.

Did you do it with all measured distances?


 
Posted : October 3, 2021 7:15 am
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