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(49g 50g) Theoretical Earth gravity g = g(latitude, height), WGS84, GRS80/67
09-24-2021, 12:02 AM
Post: #4
Gil Offline
Senior Member
 		Posts: 656
Joined: Oct 2019
RE: HP49-50G : —>g gravity calculation = g(latitude, height) with WGS84
Just added the degrees calculation mode (below in bold) :

\<< "https://en.m.wikipedia.org/wiki/Theoretical_gravity
Version 1.b

2 Arg
. lat [in D.mmss]
. alt [in m]
" DROP "alt [m]" \->TAG SWAP "lat [D.mmss]" \->TAG SWAP DUP2 RCLF \-> lat alt f
\<< DEG lat HMS\-> 'lat' STO DEG '9.780327*(1+.0053024*SIN(lat)^2-.0000058*SIN(lat*2)^2)-.000003086*alt' \->NUM "Int.grav 1967" \->TAG '9.7803253359*((1+1.9318526464E-3*SIN(lat)^2)/\v/(1-6.69437999014E-3*SIN(lat)^2))-(1-.00139*SIN(lat)^2)*.0000030877*alt+7.2E-13*alt^2' \->NUM "WGS 84" \->TAG f STOF
\>>
\>>

Regards,
Gil


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RE: HP49-50G : —>g gravity calculation = g(latitude, height) with WGS84 - Gil - 09-24-2021 12:02 AM



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