[amsat-bb] Re: SSTV Algorithms?

[Simon (HB9DRV)]

Hi,

Briefly - the SSTV developers have their own algorithms more-or-less, what 
we are mostly interested in is the frequency at a point in time. Simplifying 
things further - we need to know frequency for each point in the line, the 
filtering we use to pre-process the incoming signal removes noise etc. After 
all - it's an analogue specification.

There would be no advantage to sampling at 48kHz instead of 8kHz, in fact it 
would use a lot more CPU to run the filters.

The filtering we use is very standard stuff, SSTV is a nice and simple 
concept, the big problem is combating noise, fading and multi-path 
interference.

Simon Brown, HB9DRV
www.ham-radio-deluxe.com

----- Original Message ----- 
From: "Curt Nixon" <cptcurt at flash.net>
>
> I wasn't so interested in the actual SSTV algorithms as I was in seeing
> if there is any visible difference in the result of different algorithm
> use--or is everyone using the same decoding kernel?
>