Dear Antonio and Mauro
Thanks for kind explanation, Mauro.
I think I never fully understood this option, I can't give you a better
explanation than that stated on the manual, so if anyone has a better
understanding of it please enlighten us.
It is hard to describe the details of ambiguity
resolution beyond the manual.
They take just different algorithms.
Please switch the option and select the
appropriate one for your environment.
regards,
*********
Tomoji TAKASU
--------------------------------------------------
From: "Mauro Ugarte Avilés" <[email protected]>
Sent: Thursday, October 27, 2011 6:41 AM
To: "Open Source GPS-related discussion and support"
<[email protected]>
Subject: Re: [FOSS-GPS] RE: Post-processing RINEX to simulate RTK
On 26/10/11 14:35, António Pestana wrote:
"3.3 Configure Input, Output and Log Streams for RTKNAVI"
That is invaluable information for me. I'm becoming a RTKLIB fun but
I'm a civil engineer with no knowledge of data network technology.
Regarding that chapter, you should use as your network topology, the
example 4 (Wifi) or 5 (mobile phone network), and replace on both of
those examples the block "RTKNAVI" by Spider (and maybe move Spider to
the "Base Station" or reference receiver's PC, and "STRSVR" to the
remote receiver's PC) . If there is going to be line of sight between
both locations, a Wireless Router or Access Point connected at the Base
Station's PC Ethernet port (or wirelessly), an a USB wireless adapter
with detachable antenna at the rover's PC (this one, for example:
http://www.tp-link.com/en/products/details/?model=TL-WN722N), with both
antennas (the AP/router and the USB adapter) replaced by a directional
Wifi antenna like this one:
http://www.tiendecita.com/antena-wifi-planar-estanca-marca-abaks-p-99.html,
should do it. (Note that the antenna does not include the coaxial cable
needed to connect the antenna to the AP/router (that by the way has to
have a detachable antenna also, in order to replace it), but that cable
can be easily found on computer stores). The USB wireless adapter used
at the remote receiver's PC should be placed inside the box behind the
antenna, were the RP-SMA connector is.
All the options and configuration for RTKPOST and RTKPLOT are
described and exemplified on RTKLIB manual.
Well... At that point I have to disagree with you. The options (and
there are many options) are listed and very briefly described. Almost
never exemplified and never explained. You must have a strong
background on GNSS positioning techniques to fully understand most of
the options at user diposition.
My fault, no examples...but at least RTKLIB has a manual....and there
are screen captures on it!! At the GNSS positioning techniques FOSS
world, those features are not very usual... ;-). Based on that brief
descriptions, you would be able to find better explanations somewhere
else: papers, doctorate theses, GNSS equipment manufacturers, etc.
I'm having trouble in learning the differences between position modes
(Options - Setting 1, namely static, moving-base and fixed)...
You will be sensing large structures, right? In that case, I would go
with "static" (static rover, static reference), not "moving-base"
(moving rover, moving reference) nor "fixed" (constant distance between
rover and base). Maybe you could go with kinematic too, if the real-time
displacements and deflections of the structures studied can be
considered as "movement".
...and between integer ambiguity resolution (Options - Setting 2).
I think I never fully understood this option, I can't give you a better
explanation than that stated on the manual, so if anyone has a better
understanding of it please enlighten us.
Best regards,
Mauro U.
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