Bernese GNSS Software Version 5.2 Tutorial

5.3 Ambiguity Resolution...A POSTERIORI SIGMA OF UNIT WEIGHT (PART 1):------------------------------------------A POSTERIORI SIGMA OF UNIT WEIGHT : 0.0012 M (SIGMA OF ONE-WAY L1 PHASE OBSERVABLE AT ...DEGREE OF FREEDOM (DOF) : 76255CHI**2/DOF : 1.51...After the ambiguity resolution the same statistics is provided in PART 2:...14. RESULTS (PART 2)--------------------NUMBER OF PARAMETERS (PART 2):-----------------------------PARAMETER TYPE #PARAMETERS #PRE-ELIMINATED #SET-UP ...------------------------------------------------------------------------------------------ ...STATION COORDINATES 3 0 3 ...AMBIGUITIES 40 0 232 ...------------------------------------------------------------------------------------------ ...TOTAL NUMBER OF PARAMETERS 43 0 235 ...------------------------------------------------------------------------------------------ .........A POSTERIORI SIGMA OF UNIT WEIGHT (PART 2):------------------------------------------A POSTERIORI SIGMA OF UNIT WEIGHT : 0.0013 M (SIGMA OF ONE-WAY L1 PHASE OBSERVABLE AT ...DEGREE OF FREEDOM (DOF) : 76421CHI**2/DOF : 1.81...From the number of ambiguity parameters it can be computed that 162 out of 206 ambiguitiesfrom both GPS and GLONASS have been resolved to their integer numbers.Please remind, that at least 4 ambiguity parameters must remain as real values because ofone reference ambiguity per GNSS and frequency are needed. Because the two receiversbelong to different groups regarding “GLONASS ambiguity resolution between different frequencychannels” only the ambiguities between the same frequency numbers have been resolved.In addition, depending on the receiver type, not all ambiguities for GPS are allowed to beresolved too, to prevent problems with the quarter–cycle bias between the L2P and L2Csignal (see option “Consider GPS quarter-cycle biases” in panel “GPSEST 3.2: General Options 2”and the lecture on ambiguity resolution).5.3.3 Ambiguity Resolution: BPEAdmittedly, it is cumbersome to process the baselines “manually” one after the other —you have twelve baselines per session for this small example campaign. On Friday you willhave a lecture on automation of the data processing with the BPE .In the example BPE RNX2SNX.PCF a sequence for the ambiguity resolution is included.For this tutorial lecture a small part of this BPE is extracted into a sepa-Bernese GNSS Software, Version 5.2 Page 67