[time-nuts] CGSIC: FW: New NANU 2014090

[Magnus Danielson]

Jim, Bob,

On 12/17/2014 01:06 AM, Bob Camp wrote:
> Hi
>
>> On Dec 16, 2014, at 7:01 PM, Jim Lux <jimlux at earthlink.net> wrote:
>>
>> On 12/16/14, 3:36 PM, Magnus Danielson wrote:
>>> Paul,
>>>
>>> That is indeed the question. Considering that the signal is better
>>> supported, I hope the light goes on somewhere. The signals is all
>>> 1,023 Mchips/s, just a thad different. Should be possible to pull off if
>>> people want to do dual frequency without going full bandwidth.
>>>
>>> Then again, if you are willing to pay good money, you can get it today.
>>>
>>
>> what about one of the software receivers? I would think that making  L2 and L5 filters isn't that tough, so all you need is the back end.
>
> ….. and the back end is where all the work is.

There is a fair amount of work along the full path.

LNA with some L2 and L5 filters is pretty easy.

I think you still want to have a correlator baseband processing in say 
an FPGA.

There is naturally stuff to be done on the L2C and L5 modulated signals, 
but it goes in a relatively slow paze so that even modest processors can 
keep up with it.

Cheers,
Magnus