[linux-dvb] Re: Receiving high resolution weather satellite pictures from HotBird

[nuclearcat@nuclearcat.com]

Hello Holger,

Tuesday, May 6, 2003, 12:10:29 PM, you wrote:

Why TCP?
I think it's UDP transmission, standart File Delivery over satellite.
Possible, it will work under Linux, if receiving program can be ported
to Linux, and if DVB driver support multicasting (i mean opening new
filters for multicast).

HW> hugo.van.ruyskensvelde@easynet.be wrote:
>> Hi,
>> 
>> As you all probably know by now, one of the power amplifiers of the 
>> dissemination transponder of the digital weather satellite MSG-1 did not 
>> work. 
>> As a result dissemination of the weather satellite pictures is done via the 
>> HotBird ( see www.eumetsat.de ).
>> Are there any efforts done in the Linux community to receive those pictures 
>> with the linux dvb driver ? 
>> See http://www.david-taylor.pwp.blueyonder.co.uk/wxsat/atovs/index.html for 
>> info on windows receiving systems.

HW> The DVB part should not be too hard -- after looking on the screen shots 
HW> I suppose they transmit the data using multicast TCP over DVB, so you 
HW> only have to set up a network connection using the dvbnet utility and 
HW> then process the received data...

HW> Do you know what data format they use? Their presentation is talking 
HW> about JPEG and a wavelet compression scheme but is not clear to me. 
HW> Probably they also have some side information describing positional 
HW> information of the scanning satellite...

HW> Holger






-- 
Best regards,
 nuclearcat                            mailto:nuclearcat@nuclearcat.com



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