I found a discussion on My Life Blog which offers a formula for finding the coordinates of a PD Theodolite,which I though might be helpful to a surveyor using this type of instrument.
Calculation of measurement with measurement theodolite.melakukan with Theodolite would be more time consuming calculations Dlm coordinates and elevation data let alone done manually using a calculator without the help of software ms excel at this pc.berikut calculation formulas with manual measurement involves counting theodolite.Perhitungan flat distance (D) skewed distance (S) and height difference (△ H). and after that we calculated would begin to calculate the coordinates X, Y, Z.
D = ((ba-bb) -100) * (sin V) ^ 2
S = ((ba-bb) -100) * sin V
△ H = tan (90-V) * D + IH-TH
Kor.X = SIN AZ * D + X ST
Kor.Y = COS AZ * D + Y ST
EL .= △ H + EL ST where the vertical angle V = AZ = Azimuth ST = Station tool tool TH IH = high high = target / beacon meters
Has anyone ever used this formula or this instrument? Have anything to add or change in this formula?
This Content Originally Published to Land Surveyors United Network
Heres my of the shortcut in area calculation, I find it handy when there is no programmable calculator around. They dont teach this kind of method in school. I had derived from the book Theory and Practice in Surveying 3rd Edition.
You can comment for any opinion or suggestion to refine the method.