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analysis:solve

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analysis:solve [2014/08/12 03:23]
Jamie McCallum [Start calc/solve & get a viable solution]
analysis:solve [2014/08/12 04:09] (current)
Jamie McCallum [Prepare level 4 database & convert to NGS format]
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   * Next, set up for an intermiary solution. ​   * Next, set up for an intermiary solution. ​
     * Press ''​L'',​ ''​+''​ and ''​7''​ to set the solution type to ''​G-Gxs combination''​. ​     * Press ''​L'',​ ''​+''​ and ''​7''​ to set the solution type to ''​G-Gxs combination''​. ​
-    * Press '''''​ and ''​3''​ to change the suppression method to ''​SUPMET__COMB1''​.+    * Press '''''​ and ''​3''​ to change the suppression method to %%SUPMET__COMB1%%.
     * Press ''​-'',​ ''​A'',​ ''​1'',​ ''​2''​ (press enter), ''​2'',​ ''​5''​ (press enter), ''​3''​ and ''​4''​ (press enter) to set up the singularity check with the recommended parameters. Press ''​S''​ to save & return.     * Press ''​-'',​ ''​A'',​ ''​1'',​ ''​2''​ (press enter), ''​2'',​ ''​5''​ (press enter), ''​3''​ and ''​4''​ (press enter) to set up the singularity check with the recommended parameters. Press ''​S''​ to save & return.
     * Enter the sites menu with ''​E''​ and toggle mode to Automatic with ''​*''​. Press ''​C''​ and set the time interval to 300 minutes (''​300''​ ), polynomial order to 2 (''​2''​),​ and use Batch mode (''​B''​). Set the reference station as before.     * Enter the sites menu with ''​E''​ and toggle mode to Automatic with ''​*''​. Press ''​C''​ and set the time interval to 300 minutes (''​300''​ ), polynomial order to 2 (''​2''​),​ and use Batch mode (''​B''​). Set the reference station as before.
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     * Return to the main menu with ''​O''​ and then go to the Weighting menu with ''​H''​. Press ''​C''​ to add a noise floor to the weights, then save areturn to the main menu with ''​O''​     * Return to the main menu with ''​O''​ and then go to the Weighting menu with ''​H''​. Press ''​C''​ to add a noise floor to the weights, then save areturn to the main menu with ''​O''​
     * Generate a solution with ''​Q''​. If the weighted RMS is < 150 ps, things are likely ok. You should be able to produxe a version 4 database and NGS file at this stage if you want to work on the data in VieVS/​OCCAM/​etc. This avoids calc/solve flagging ''​outliers''​ automatically. To proceed on to obtain a final solution, read on.     * Generate a solution with ''​Q''​. If the weighted RMS is < 150 ps, things are likely ok. You should be able to produxe a version 4 database and NGS file at this stage if you want to work on the data in VieVS/​OCCAM/​etc. This avoids calc/solve flagging ''​outliers''​ automatically. To proceed on to obtain a final solution, read on.
-  * Eliminate outliers with ''​\''​. Set recommended parameters with the following commands: ''​X'',​ '​1000''​ (press enter), ''​U'',​ ''​400''​ (press enter), ''​C''​ (press enter). When ready, the screen should look like this:+  * Eliminate outliers with ''​\''​. Set recommended parameters with the following commands: ''​X'', ​''​1000''​ (press enter), ''​U'',​ ''​400''​ (press enter), ''​C''​ (press enter). When ready, the screen should look like this:
  
 <​code>​ <​code>​
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 (W) Weights update ​                        (H) On-line help (W) Weights update ​                        (H) On-line help
 </​code>​ </​code>​
 +
   * Press ''​P''​ to proceed with detection & elimination & press ''​S''​ to save the results & generate a new  solution. If the wrms is between 15 and 100 psec with the ''​used observations''​ precetage > 80%, then it's regarded as good. Significantly worse wrms/low acceptance suggests mishanded clock breaks, un- or mis-applied calibration,​ or maybe a bad station.   * Press ''​P''​ to proceed with detection & elimination & press ''​S''​ to save the results & generate a new  solution. If the wrms is between 15 and 100 psec with the ''​used observations''​ precetage > 80%, then it's regarded as good. Significantly worse wrms/low acceptance suggests mishanded clock breaks, un- or mis-applied calibration,​ or maybe a bad station.
   * Assuming that you have a good solution, or one with known and uncorrectable problems, you can then go on to generate a final solution.   * Assuming that you have a good solution, or one with known and uncorrectable problems, you can then go on to generate a final solution.
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 ====== Prepare level 4 database & convert to NGS format ====== ​ ====== Prepare level 4 database & convert to NGS format ====== ​
  
 +You can do this at any stage after running GAMB which handles the ambiguity resolution & ionospheric correction process. It's a two-tage process of creating an updated database & the running a DOS script to convert it to NGS format.
 +
 +  * Creating an updated database
 +    * From the main menu (''​O''​),​ press ''​U''​. Make sure that only the X-band database is selected and then press ''​N''​. ​
 +    * Press ''​G'',​ ''​5'',​ ''​6''​ and ''​7''​ to set the options as shown below. Press ''​N''​ to proceed.
 +
 +<​code>​
 +Database update ​                                          NEWDB Ver. 2007.06.05
 +-------------------------------------------------------------------------------
 +
 +
 +Database to be updated: $14FEB05XT
 +
 +        Reweighting:​ (G)roup (P)hase (B)oth (#)None
 +
 + (1) Clk & atm parms, constraints,​ data configuration-->​Yes No
 +
 + (2) Group delay editing and ambiguities--------------->​Yes No
 +
 + (3) Group ionosphere calibration:​--------------------->​Yes No
 +
 + (4) Met., cable, phase cal status:​-------------------->​Yes No
 +
 + (5) Ocean, relativity, pole tide status:​-------------->​Yes No
 +
 + (6) Phase delay editing and ambiguities--------------->​Yes No
 +
 + (7) Phase ionosphere calibration:​--------------------->​Yes No
 +
 +(N)ext Menu             ​(O)PTION ​   (R)efresh Screen ​ (D)efault standard
 +(T)erminate SOLVE       ​Re(S)elect Databases
 +</​code>​
 +
 +    * You'll be prompted to add a history entry via emacs at the next screen. Once emacs is started, add a line like "​aust19 NGS conversion AU". Close emacs and then press enter to update the file.
 +    * If it fails complaining about "Input experiment $14FEB05XT Ver.    3 not in catalog
 +" or "key not found",​ etc, this is usually due to the database having already been updated. If this fails, you'll need to exit calc/solve , delete the offending file from /​data/​vlbi/​mark3_dbh/​ and from the catalogue. You can do this with the ''​catlg''​ program. Use the ''​de''​ command (with ''​-1''​ as the "​password"​),​ select ''​e''​ for entry and then confirm the deletion of the most recent version. Once deleted, you should be able to run the update as per normal.
  
 +  * Once you have the 14FEB05XT_V004 file in /​data/​vlbi/​mark3_dbh/,​ you can now convert it with MK3NGS2.EXE. First, start a DOS command prompt with ''​wine cmd.exe''​. Then run ''​MK3NGS2.EXE /​data/​vlbi/​mark3_dbh/​14FEB05XT_V004''​. The output file will be written into the current directory as 140205XT.NGS and is now ready. Note that VieVS expects a filename like 14FEB05XT_N004 though.
/home/www/auscope/opswiki/data/attic/analysis/solve.1407813801.txt.gz · Last modified: 2014/08/12 03:23 by Jamie McCallum