8359Re: Dead Reckoning (was: Instantaneous Course/Speed Vector)
- Apr 1, 2011--- In firstname.lastname@example.org, "Lynn W Deffenbaugh (Mr)" <kj4erj@...> wrote:
>Sounds like you've got the understanding of what I saw...
> RIGHT! That makes sense. The black square is the track point at which
> a beacon was issued. James's image had a symbol there because his other
> station used the same symbol. So, in James's picture we had 2 stations
> at the same point, then one moved away beaconing a speed and direction.
> ME's symbol moved with him realtime, while the DR ghost of the same
> symbol moved out in front (or behind) based on his (improperly) current
> speed/heading from the GPS, but the line on the DR (properly) went back
> to his last beaconed position.
> I like the DR on ME from the last beaconed position, but it needs to
> also be based on the then-beaconed speed and heading. It's kind of a
> more visual indication of what the Red Dot shows relatively inside the
> circle. If you accelerate in a straight line since your last beacon,
> the red dot will fall behind and so will the DR ghost symbol. If you
> decelerate, the red dot and the DR ghost will move ahead of your current
> position. If you maintain the speed and heading from your last beacon,
> you'll not even notice the DR ghost because it'll be sitting right on
> top of ME. If you turn, you'll see the DR continue straight out from
> the previous beacon point but visually on the screen it will look like
> it's drifting to one side as ME moves the screen over to stay in the center.
>Do you?? personally I don't see the issue... the DR is a projection of where the station "should" be...
> So, I just need to fix ME's DR to use the last beaconed speed/heading
> rather than the current GPS speed/heading and all will be well.
Can you tie the DR for ME with the Red Dot? I may be understanding it wrong, but I thought the Red Dot was the same thing showing up on the local screen... I turned mine off, I know where I am, and I know where I'm going, I don't really need to see the red dot, or my own DR icon, but it'd be handy to be able to still see everyone else's
>'06 Dodge Durango, my laptop fits nicely in the passanger seat, AND I found a USB to serial converter that seems to be working with Windows 7 to let me use the D700 when I need it for special events, or when the YL's (KC2ULK) lap needs to be warmed up ;)
> Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
> PS. 19" mobile? Wow! I drive a big car (1985 Pontiac Parissienne) but
> I wouldn't have room for 19"! Now my wife's (KJ4OVQ-9) Safari
KC2ANT (appretiative user of APRSIS32)
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