The Starpath StarPilot-PC program includes an analytical solution to the problem,
which offers a very convenient way to confirm your position when using electronic charting and GPS... always a good thing to do,
once in a while. With it, you just read the lat/lon of the three targets with the chart program, measure the angles with a sextant,
and then enter the data in the program and it instantly computes your lat/lon. It is a slick way to use the old and the new to
check the new. It may seem a bit circular, but it is indeed an independent confirmation of your GPS position. The computer is just
doing some computations and plotting for you.
To see the high precision instrument that forms the basis for this device click US Navy Station Pointer, which is an instrument of
ours on display at the Institute of Navigation's Virtual Museum.