<div dir="ltr"><div><div><div><div><br></div>FWIW some screenshots from when I tried a few different programs for static PPP:<br><a href="http://www.anderswallin.net/2013/12/comparing-gps-ppp-solutions/">http://www.anderswallin.net/2013/12/comparing-gps-ppp-solutions/</a><br><br></div>in many cases I found ESA gLab more user-friendly with the GUI/dialogs guiding the user through the various stages. You could try it:<br><a href="http://gage.upc.edu/gLAB">http://gage.upc.edu/gLAB</a><br><br></div>I've only done PPP solutions from dual-frequency L1/L2 receivers that produce RINEX files. Not familiar at with IONEX files, since those are not needed with L1/L2-receivers.<br><br></div>Anders<br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 18, 2015 at 8:29 PM, Yanqing Hou <span dir="ltr"><<a href="mailto:fishloveocean@gmail.com" target="_blank">fishloveocean@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all,<br>
I want to use the precise ephemeris (*.sp3), precise clock correction (*.clk), and ionospheric corrections (*.yyi) from IGS in resolving a baseline of about 200km. I tried to include the sp3 and clk files in the input dialogue, and chose the options in setting1 as:<br>
Ionosphere Correction: IONEX TEC,<br>
Satellite Ephemeris/Clock: Precise<br>
<br>
I used only GPS constellation and continous mode to resolve ambiguities, but the precision of the baseline is still very low: the standard deviation of N/E/U is around 0.5m in each direction. I assume I did not use the sp3, clk, and ionex files correctly, because other people can have much better precision than mine with other softwares.<br>
<br>
Is there anybody who has an experience of using these IGS products to process the baseline solutions?<br>
<br>
Thanks,<br>
Yanqing<br>
<br>
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