TED]
Behalf Of Gerry Creager
Sent: Monday, 8 October 2007 6:54 AM
To: Richard Polivka, N6NKO
Cc: Jim Tolbert; XASTIR
Subject: Re: [Xastir] Question about APRS GPS position precision
Richard Polivka, N6NKO wrote:
Jim,
Most GPS units are good to 4 decimals. Any higher precision requires
post-proce
-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Gerry Creager
Sent: Monday, 8 October 2007 6:54 AM
To: Richard Polivka, N6NKO
Cc: Jim Tolbert; XASTIR
Subject: Re: [Xastir] Question about APRS GPS position precision
Richard Polivka, N6NKO wrote:
Jim,
Most GPS units are goo
On Sun, Oct 07, 2007 at 10:09:42AM -0700, we recorded a bogon-computron
collision of the <[EMAIL PROTECTED]> flavor, containing:
>
> Bob Bruninga came up with yet another method of adding precision,
> called DAO. With this method you add some extra characters to the
> comment field that give you
TECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Gerry Creager
Sent: Monday, 8 October 2007 6:54 AM
To: Richard Polivka, N6NKO
Cc: Jim Tolbert; XASTIR
Subject: Re: [Xastir] Question about APRS GPS position precision
Richard Polivka, N6NKO wrote:
> Jim,
>
> Most GPS units are good to 4 decim
Richard Polivka, N6NKO wrote:
Jim,
Most GPS units are good to 4 decimals. Any higher precision requires
post-processing or L1/L2 reception (not avail in consumer equipment).
When you factor in multipath and all the other variables, 4 decimals is
quite good but it takes time and patience - thi
On Sun, 7 Oct 2007, Jim Tolbert wrote:
> I have been told that the limiting factor in position precision is the
> APRS system transmission standard-- that transmissions are limited to
> 1/1000th of a degree or approximately +/- 60 feet. Is this true? If
> so, why?
Mic-E format or "standard" AP
Jim,
Most GPS units are good to 4 decimals. Any higher precision requires
post-processing or L1/L2 reception (not avail in consumer equipment).
When you factor in multipath and all the other variables, 4 decimals is
quite good but it takes time and patience - think searching for a
geocache in
Hi, all..
I have been told that the limiting factor in position precision is the
APRS system transmission standard-- that transmissions are limited to
1/1000th of a degree or approximately +/- 60 feet. Is this true? If
so, why?
If not, what is the limiting element in the final dis
