On Mar 14, 8:16 am, " wrote:
... Keep in mind, with deviation, the error will be between
headings so the angle between your two objects could be 7 degrees off
in this case... Good thing he's got a GPS. ...

And, while I'm in the bad habit of replying to myself and just for the
record: you can't get a fix with just the angle between two objects
and no azimuth. The angle only gives you a circle of position (or to
be fully correct two possible circular arcs of position except where
you have a transit and it becomes a line of position). With just
angles between objects you need three to get a 2d fix (unless you have
transits where you only need two). But you knew that

-- Tom.

On Fri, 14 Mar 2008 11:42:16 -0700 (PDT), "
wrote:

On Mar 14, 8:16 am, " wrote:
... Keep in mind, with deviation, the error will be between
headings so the angle between your two objects could be 7 degrees off
in this case... Good thing he's got a GPS. ...

And, while I'm in the bad habit of replying to myself and just for the
record: you can't get a fix with just the angle between two objects
and no azimuth. The angle only gives you a circle of position (or to
be fully correct two possible circular arcs of position except where
you have a transit and it becomes a line of position). With just
angles between objects you need three to get a 2d fix (unless you have
transits where you only need two). But you knew that

-- Tom.
Well, normally when you are doing it you take the angle between two
points a known distance apart...

Bruce-in-Bangkok
(correct email address for reply)

On Mar 14, 4:48 pm, Bruce in Bangkok wrote:
Well, normally when you are doing it you take the angle between two
points a known distance apart...

That still gives you an arc of position, not a fix.

-- Tom.