[ntp:questions] Re: First Galileo satellite launched
Bjorn Gabrielsson
bg at lysator.liu.se
Thu Dec 29 00:24:59 UTC 2005
"David L. Mills" <mills at udel.edu> writes:
> GLONASS and P-code capabilities are available for some high-end
> geodetic receivers. Neither one of us can afford to buy them.
Javad LGG100 with GPS/GLONASS L1 is available from around $4500.
Javad GGD112T with dual freq is available from around $8200.
The GG-16 (GPS/GLONASS L1) should be available for sub $1k.
http://www.tfac.com.tw/
> says a parameter conversion is not available. I assume Galileo will
> use WG84.
Galileo will use the ITRF. (WGS84 has been converging towards ITRF in
the latest WGS84 revisions) They are now said to be identical down to
the cm level.
> I assume that would make multichannel receivers for GLONASS
> hugely expensive.
It is possible to do GPS or GLONASS in the same receiver channel. See
http://www.javad.com/index.html?/jns/technology/The%20JNSChip.html
and
http://www.javad.com/index.html?/jns/technology/GLONASS%20Option.html
--
Björn
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