[FOSS-GPS] Kinematic vs PPP Kinematic?

[Danny Miller]

My mistake- NEO 6P.

Ah Michele, I didn't realize you were on the list, I've been following 
your blog periodically.  I guess I didn't realize I was seeing your name 
in two different places... how odd, I've been reading your answers to my 
questions!

Danny

On 8/28/2012 5:24 AM, Michele Bavaro wrote:
> I am not aware of any uBlox LEA-6P?
>
> I have and use regularly NEO-6P though, which has PPP and carrier 
> phase output.
> The only drawback of NEO6P is that it uses a simple crystal instead of 
> a TCXO so the Doppler values will be generally quite high.
> That does not impact the carrier phase output quality however: in zero 
> baseline mode -in very good visibility conditions- "static" gives me 
> just a few mm variance and zero mean.
>
> As I mentioned ealier in PPP mode it does not make sense to talk about 
> rover and base as it is a _standalone_ positioning mode.
>
> The hacked version of RTKLIB for NV08C is actually here:
> http://www.onetalent-gnss.com/ideas/usb-hw-receivers/denga10
> and it's currently being updated according to the recently released 
> document here:
> http://www.nvs-gnss.com/support/documentation/item/32-binr-protocol-specification.html
> for LLI and SBAS support.
>
> Cheers,
> Michele
>
>
>
> On 28/08/2012 11:49, Danny Miller wrote:
>> Well, now, I've seen the LEA-6P units are standalone PPP.  But RTKLib 
>> has kinematic mode which seems to use 2 units and this "differential".
>>
>> I did download the patched version of rtknavi that has a PPP fix.
>> I discovered that the PPP "Static" for determining the base station 
>> location was pretty stable- however, it determines the location for 
>> the "rover" only, so I just swapped the rover and base port #'s to 
>> determine the static base location.
>>
>> When I selected PPP Kinematic, the fix jumps several meters back and 
>> forth rapidly, but never seemed to stabilize much, and the noise 
>> wasn't really centered on the true location either.
>>
>> I ordered the NV08C-CSM units, BTW.  These new kids on the block are 
>> GPS AND GLONASS,  Galileo, Compass, and SBAS, 2.5m standard accuracy, 
>> and a few months back the mfg released firmware to expose the RAW 
>> pseudorange data.  Michele Bavaro thinks highly of them, and there's 
>> a hacked version of RTKLib for them:
>> http://michelebavaro.blogspot.com/
>> So, this should be fun!
>>
>> Danny
>>
>> On 8/28/2012 3:49 AM, Michele Bavaro wrote:
>>> There is a huge difference actually.
>>> The first is differential, the second standalone.
>>>
>>> Cheers,
>>> Michele
>>>
>>> On 28/08/2012 09:39, Danny Miller wrote:
>>>> Could someone explain the difference between simple Kinematic and 
>>>> PPP Kinematic in RTKLib?
>>>>
>>>> Danny
>>>>
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>>
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>
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