Originally Posted by
Pontius Navigator
I may misunderstand this but if there was constant spacing (between rings?) then it would indicate flight along a radial from the nadir.
Any other angle would eventually result in flight on the tangent or for a short time effectively along the ring.
have to be on the radial to get the maximum space between rings, any other angle will reduce the ring spacing. after ring 2 look at the distance to ring two, if less than that for a radial note how much less.
npw treat ring 2 as your start again you know the max to ring three on a radial, if at ring 3 ping that distance is less than the radial spacing distance, note the difference.
compare the two noted differences if they are the same the plane is on a constant heading, that si the only info I could get from the previous ping rings.
Now I don't believe the 60, 55, 50 45 etc rings are the only fixed points he could come up at 38, 33 etc