Bernese GNSS Software Version 5.2 Tutorial

5 Terminal Session: WednesdayThe individual iteration steps are first described (we specified that up to ten ambiguitiesmay be resolved within each iteration step — see panel “GPSEST 3.2.4: Quasi-Ionosphere-Free Ambiguity Resolution Strategy”). The following information is listed for each resolveddouble–difference ambiguity:FILE file number (1 in our case; we process one baseline only),AM1 first ambiguity number (single–difference level),CL1 corresponding ambiguity cluster,#AM1 number of ambiguities belonging to the same cluster,AM2, CL2, #AM2similar information for the second ambiguity.BEST INT. L1, L2are the integer corrections to the a priori values (a priori values are computed usingthe a priori coordinates and may be rather inaccurate).CORRECTIONS IN CYCLESfor carriers L1 and L2 gives the information about the fractional parts of the L 1 andL 2 ambiguities. The CORRECTIONS IN CYCLES L5 and L3 are of greater interest.The value L5 represents the ionosphere–induced bias expressed in L 5 cycles. Thesevalues may not be greater than the maximum value specified in panel “GPSEST 3.2.4:Quasi-Ionosphere-Free Ambiguity Resolution Strategy” (option “Search width for pairs of L1and L2 ambiguities”). RMS(L3) is the criterion according to which the ambiguitiesare sorted. Ambiguities with L 3 RMS errors larger than the value specified in theprogram input panel (in our example 0.03) will not be resolved.SA1, SA2first and second satellite number related to the ambiguities.Note that in AMBIGUITY RESOLUTION ITERATION: 65 and 66 there are examplesfor resolving pairs of ambiguities from the same satellite (path–to–path ambiguityresolution) — GLONASS satellites 114, and 119 .The results of the ambiguity resolution are summarized in the following table:...REFERENCEAMBI FILE SAT. EPOCH FRQ WLF CLU AMBI CLU AMBIGUITY RMS TOTAL AMBIGU. DL/L------------------------------------------------------------------------------------------ ...1 1 3 2199 1 1 3 - - -1 1747242. 0.000002 1 11 1 1 1 4 - - 1 -120951. 0.000003 1 11 2613 1 1 6 - - 0 -120949. 0.000004 1 14 1 1 1 7 - - 5 -484079. 0.000005 1 14 1478 1 1 8 - - 3 -484241. 0.000006 1 14 2569 1 1 9 - - 5 -484296. 0.000007 1 17 1 1 1 10 - - 5 -1280028. 0.000008 1 17 1111 1 1 11 - - -1.81 21.59 -1280192.819 1 19 1 1 1 13 - - 7 1400092. 0.0000010 1 19 897 1 1 14 - - 0.48 21.60 1400165.4811 1 19 2337 1 1 15 - - -5 1400188. 0.0000012 1 20 1 1 1 16 - - 1 757890. 0.0000013 1 20 2770 1 1 17 - - 6 757842. 0.0000014 1 22 1 1 1 18 - - 1.32 21.62 -893533.6815 1 22 1248 1 1 19 - - 6 -893514. 0.0000016 1 22 2254 1 1 20 - - -4 -893533. 0.0000017 1 24 1 1 1 21 - - 5 427188. 0.0000018 1 24 2196 1 1 22 - - 0 427032. 0.0000019 1 28 1 1 1 23 - - 1.76 21.63 -394055.2420 1 28 782 1 1 24 - - -4 -394018. 0.00000...Page 62AIUB