Hi All,
I'm an undergrad student at DIT (Dublin) and I'm undertaking an investigation of the potential impact on PPP results of Ocean Tide Loading (OTL) in SW Ireland and Britain. I'm planning to access RINEX data through the BIGF programme at Nottingham and determine correlations between variations in the x,y & z positions and tidal gauge data (also freely available).
I was wondering if there is an opensource tool that can allow time windowing of long Rinex files into say files of 1 or 2 hour duration. I've had a brief look at TECQ but don't have much experience working in DOS so if this is the only tool available I'd also appreciate advice on using it.
I'm also aware that the error budget of PPP may be to large for OTL errors to be readily discernible so I intend to attempt to identify trends in the data; advice on the sample size required and best statistical method to use would also be appreciated.
Thanks in advance for any assistance.
Check out this front end for TEQC. http://teqc.silkwerks.com It was developed by a poster on this board and makes windowing RINEX files easy. If you learned the DOS commands to run TEQC you might find that it is easier to run it in DOS mode using batch files. The front end from silkworks has a split file option that works quite nicely
We have 3 of the OPUS X90 GPS units that I often run for LONG sessions. I usually get a 10 to 14 day long file out of them. My work flow is to convert the binary file to RINEX THEN LOAD THAT HUGE RINEX file into LGO then window out the first partial day and the first full day and export that file to RINEX. Then I window out the second full day to the end of the file. This is usually 9 plus days of data. I then convert that data to RINEX using the option to break it up into 24 hour files. I could do all of this with TEQC but I have LGO and it is a little friendlier so I go this route I could also break it up into smaller files if the application needed it. I am doing control with OPUS Projects and 24 hour files seem to be my best option.
Thanks for the info.
Much appreciated.
Thanks Steve and Lee for your help, that TEQC interface seems to be doing the trick.
No doubt I'll be back for more advice in near future!!