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Hello,
I've read in a book about GPS than all the actual GPS receivers which are
compatible with WAAS / EGNOS would receive and compute well all the signals
from the future European Galileo system.
I thought the PRN codes were in the memory of the receiver. Actually, the
PRN code of Galileo satellite are not known, so, I guess the receivers will
need an firmware upgrade to be compatible with Galileo, no ? Is it possible
to receive the first Galileo satellite already operationnal ? The second on
will be launch in a few months.
Thanks in advance for your help,
Zeldus
Zeldus wrote:
This is incorrect. What book did you read?
>
> I thought the PRN codes were in the memory of the receiver. Actually, the
> PRN code of Galileo satellite are not known, so, I guess the receivers will
> need an firmware upgrade to be compatible with Galileo, no ? Is it possible
> to receive the first Galileo satellite already operationnal ? The second on
> will be launch in a few months.
>
> I thought the PRN codes were in the memory of the receiver. Actually, the
> PRN code of Galileo satellite are not known, so, I guess the receivers will
> need an firmware upgrade to be compatible with Galileo, no ? Is it possible
> to receive the first Galileo satellite already operationnal ? The second on
> will be launch in a few months.
>
Gqz%f.893786$x96.740622@attbi_s72...
> Zeldus wrote:
>> I've read in a book about GPS than all the actual GPS receivers which are
>> compatible with WAAS / EGNOS would receive and compute well all the
>> signals from the future European Galileo system.
>> compatible with WAAS / EGNOS would receive and compute well all the
>> signals from the future European Galileo system.
> This is incorrect. What book did you read?
"Guide pratique de GPS" 4ième édition written by Paul Correia at Eyrolles
editor, page 163 in a french library at Paris. This book is reputate to be
very accurate in its informations. Some people say here Galileo will be full
compatible with US GPS using the same frequence and the same CDMA
technology.
Zeldus
Zeldus wrote:
> Gqz%f.893786$x96.740622@attbi_s72...
>
>
>>Zeldus wrote:
>>>I've read in a book about GPS than all the actual GPS receivers which are
>>>compatible with WAAS / EGNOS would receive and compute well all the
>>>signals from the future European Galileo system.
>>>compatible with WAAS / EGNOS would receive and compute well all the
>>>signals from the future European Galileo system.
>> This is incorrect. What book did you read?
>
>
>
> "Guide pratique de GPS" 4ième édition written by Paul Correia at Eyrolles
> editor, page 163 in a french library at Paris. This book is reputate to be
> very accurate in its informations. Some people say here Galileo will be full
> compatible with US GPS using the same frequence and the same CDMA
> technology.
>
> Zeldus
>
> \
>
>
> "Guide pratique de GPS" 4ième édition written by Paul Correia at Eyrolles
> editor, page 163 in a french library at Paris. This book is reputate to be
> very accurate in its informations. Some people say here Galileo will be full
> compatible with US GPS using the same frequence and the same CDMA
> technology.
>
> Zeldus
>
> \
How would this be possible? The PRN codes have only 32 possible
combinations with the USA already using all of them (one is usually
reserved for a bad satellite). If two satellites used the same PRN they
would interfere with each other.
Dale
--
_ _ Dale DePriest
/`) _ // http://users.cwnet.com/dalede
o/_/ (_(_X_(` For GPS and GPS/PDAs
>
> How would this be possible? The PRN codes have only 32 possible
> combinations with the USA already using all of them (one is usually
> reserved for a bad satellite). If two satellites used the same PRN they
> would interfere with each other.
>
> Dale
> How would this be possible? The PRN codes have only 32 possible
> combinations with the USA already using all of them (one is usually
> reserved for a bad satellite). If two satellites used the same PRN they
> would interfere with each other.
>
> Dale
I guess you could get by with pseudrandom sequences that are not exactly
orthogonal. That would increase the possible number, at the cost of a
very slightly worse signal to noise ratio.
How do the WAAS satellites manage? They are also masquerading as GPS
satellites. Do they use different codes or do they use a completely
different signal?
Harrie
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> I've read in a book about GPS than all the actual GPS receivers which are
> compatible with WAAS / EGNOS would receive and compute well all the signals
> from the future European Galileo system.