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Well, hummm.. <br>
Post the two files if you can for others to tinker with. Recall
that RTCM 1004 will not carry the Doppler that you might have
originally had (so it may not be present in your RINEX files if that
is what was converted), so you might be better of post processing
with raw data (or MSM type RTCM if you get it). Doppler is very
useful here, esp with L1 only. I have not used the baseline
constraint in RTKLIB, so can not comment on its use or value here,
would have to dig into the actual code. In any event, with the
moving baseline method expect to see noticeable loses the positional
estimate reported, in favor of a better estimate or the yaw and
pitch. [you can see that with the two reference stations I pointed
you to, in static you will see <5mm variation] This method is at
its best for a ship or plane. If your antenna are set are too
close ( say~<50 cm), or they interfere with each other (due to
the down convert local oscillator crosstalk between identical GNSS
devices), other issues will of course arise. Just some quick
guesses. <br>
Good luck, regards DCKelley<br>
<br>
<br>
<div class="moz-cite-prefix">On 4/2/2016 5:02 PM, Marco Mendonça
wrote:<br>
</div>
<blockquote
cite="mid:CAG5b3rvJc1cdJzXeLw9etSG+T_D7cmqU-Ur94o--9zTL_MGseQ@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>Thanks, David!<br>
<br>
I'm actually trying to post process two RINEX files on rtkpost
from antennas on a car. I chose the moving baseline option,
set the baseline length, but still, no solution.<br>
<br>
When not setting the baseline length as fixed, it works fine.
Although the estimated baseline is close to the real value,
I'd like it to be fixed. </div>
<div><br>
</div>
<div>I'm also using moving baseline. With the length constraint,
the results are noisy and only with 1.07% fixed epochs.
Without the constraint, the fixed epochs are around 90% and
much smoother and coherent. And I'm absolutely sure about the
distance from antenna to antenna.</div>
<div><br>
</div>
<div>Also, thanks for the example provided! I'll connect there
and try to debug my option choices. Any other guesses of what
might be happening are greatly appreciated! </div>
<div><br>
</div>
<div>Regards,</div>
<div><br>
</div>
<div>Marco</div>
<div> </div>
<div><br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span
style="font-size:12.8px">Date: Sat, 2 Apr 2016 15:09:23
-0700<br>
</span><span style="font-size:12.8px">From: David Kelley
<a class="moz-txt-link-rfc2396E" href="mailto:DavidKelley@iTSware.net"><DavidKelley@iTSware.net></a><br>
</span><span style="font-size:12.8px">To: Open Source
GPS-related discussion and support<br>
</span><span style="font-size:12.8px"> <</span><a
moz-do-not-send="true"
href="mailto:foss-gps@lists.osgeo.org"
style="font-size:12.8px"><a class="moz-txt-link-abbreviated" href="mailto:foss-gps@lists.osgeo.org">foss-gps@lists.osgeo.org</a></a><span
style="font-size:12.8px">>, </span><a
moz-do-not-send="true" href="mailto:mammendonca@gmail.com"
style="font-size:12.8px"><a class="moz-txt-link-abbreviated" href="mailto:mammendonca@gmail.com">mammendonca@gmail.com</a><br>
</a><span style="font-size:12.8px">Subject: Re: [FOSS-GPS]
RTKLib fixed baseline length<br>
</span><span style="font-size:12.8px">Message-ID:
<a class="moz-txt-link-rfc2396E" href="mailto:57004313.4050509@iTSware.net"><57004313.4050509@iTSware.net></a><br>
</span><span style="font-size:12.8px">Content-Type:
text/plain; charset="utf-8"; Format="flowed"</span><br
style="font-size:12.8px">
<br style="font-size:12.8px">
<span style="font-size:12.8px">Marco :<br>
</span><span style="font-size:12.8px">Works fine for me as
well.<br>
</span><span style="font-size:12.8px">There are no "special"
switches, does it first work for you when<br>
</span><span style="font-size:12.8px">stationary? Start with
getting that to work as a first step.</span><br
style="font-size:12.8px">
<span style="font-size:12.8px">If you have it working in the
mode "Kinematic" (ie normal moving rover<br>
</span><span style="font-size:12.8px">RTK) or "Static" (ie
stationary RTK where measurement noise is taken out<br>
</span><span style="font-size:12.8px">in dithering the clock
estimate more than the position), then<br>
</span><span style="font-size:12.8px">"Moving-Base" should
work as well. I presume you know the reason for<br>
</span><span style="font-size:12.8px">using this mode is often
to get a precise estimate of the rovers heading.</span><br
style="font-size:12.8px">
<span style="font-size:12.8px">Here is an image of it working
in that mode on short 130cm baseline.<br>
</span><span style="font-size:12.8px">You can see that the two
antenna are nearly, not not 100% located N-S<br>
</span><span style="font-size:12.8px">with respect to each
other. The ~0.1 degree shift is because the West<br>
</span><span style="font-size:12.8px">side of office building
does not run a true north-south! Feel free to<br>
</span><span style="font-size:12.8px">connect to the SNIP
NTRIP casters that are listed on the image below to<br>
</span><span style="font-size:12.8px">confirm everything else
is working. [No user id is needed, and<br>
</span><a moz-do-not-send="true"
href="http://serv2.itsware.net:2101/" rel="noreferrer"
style="font-size:12.8px">Serv2.itsware.net:2101</a><span
style="font-size:12.8px"> is left up during the weekend. Not
guarantees<br>
</span><span style="font-size:12.8px">during the US work week
as that is used a testing machine.]</span><br
style="font-size:12.8px">
<br style="font-size:12.8px">
<br style="font-size:12.8px">
<span style="font-size:12.8px">Good luck!<br>
</span><span style="font-size:12.8px">Regards, DC Kelley</span></blockquote>
<div><br clear="all">
<div>
<div class="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">- Marco Mendonça<br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
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<br>
<div class="moz-signature">-- <br>
<br>
-- <br>
Regards,
<br>
David Kelley
<br>
ITS Programs Manager, SubCarrier Systems Corp. (SCSC)
<br>
626-485-7528 (Cell) 626-513-7715 (Office) 888-950-8747 (Main) </div>
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