I am having issues figuring out the correct file format to import a a GPS file from JAVAD into Star*Net. Is there any resource someone could point me to as to how to accomplish this? I saw in a past forum post a mention of a NGS G File however when I export the G File from JUSTIN and import it into Starr*NET, Star*NET does not recognize the file format.
How to Import JAVAD into Star*Net
- Thread starter ndoring
- Start date
I don't have a lot of experience with Justin, but there are two types of G-file vectors, correlated and covariance. If you have the option, you might try switching to the other choice. Can you post an example of the G-File that Justin exported?
Jim Frame
Well-Known Member
You want correlations rather than covariance, at least for import into Star*Net v6. Another thing to keep in mind is that Star*Net (v6, anyway) is looking for a g-file with an extension of ngs (i.e., mygfile.ngs). It'll accept other extensions (e.g., *.txt, *.gfile) but doesn't show them by default in the import file list box. You have to explicitly select "All Files" from the Select Baseline Files drop-down for Files of Type, or manually type in the desired file name with extension.
When I try to import the gfile into Starnet I get the following eror, "ERROR [ File:___ I Line: 4 ] Missing "D" Record."
Do I need to modify the gfile before importing into Starnet? I could not attach the gfile so I have pasted it below for reference. I greatly appreciate the help.
AXX2017 4192017 41917181301GPS
B2017 41912 02017 41912 0 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 1 0 69 0 69 0 69 J1097A 1J1097A 1
G 0 1 1 WGS84 -27100638895 -42399004806 39061198712
D 1 2 193 1 3 -85 2 3 -283
B2017 41919252017 4191925 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 2 188471 44 48907 50 85263 51 J1097A 1J1097A 2
G 0 2 2 WGS84 -27100450425 -42398955899 39061283975
D 1 2 4100934 1 3 -2400229 2 3 -4212929
B2017 41919322017 4191932 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 3 348614 74 -277843 99 -272478 95 J1097A 1J1097A 3
G 0 3 3 WGS84 -27100290282 -42399282649 39060926235
D 1 2 7420443 1 3 -6057278 2 3 -7880893
B2017 41922562017 4192256 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 4 237938 59 -3121 86 46188 83 J1097A 1J1097A 4
G 0 4 4 WGS84 -27100400958 -42399007927 39061244901
D 1 2 7276793 1 3 -6513472 2 3 -6206365
B2017 41923 92017 41923 9 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 5 -651482 148 -7890 243 -216836 226 J1097A 1J1097A 5
G 0 5 5 WGS84 -27101290378 -42399012696 39060981876
D 1 2 6472958 1 3 -8265808 2 3 -4737341
B2017 41923152017 4192315 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 6 -597357 119 -300099 191 -397376 185 J1097A 1J1097A 6
G 0 6 6 WGS84 -27101236252 -42399304905 39060801336
D 1 2 7304153 1 3 -6798780 2 3 -4606728
Do I need to modify the gfile before importing into Starnet? I could not attach the gfile so I have pasted it below for reference. I greatly appreciate the help.
AXX2017 4192017 41917181301GPS
B2017 41912 02017 41912 0 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 1 0 69 0 69 0 69 J1097A 1J1097A 1
G 0 1 1 WGS84 -27100638895 -42399004806 39061198712
D 1 2 193 1 3 -85 2 3 -283
B2017 41919252017 4191925 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 2 188471 44 48907 50 85263 51 J1097A 1J1097A 2
G 0 2 2 WGS84 -27100450425 -42398955899 39061283975
D 1 2 4100934 1 3 -2400229 2 3 -4212929
B2017 41919322017 4191932 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 3 348614 74 -277843 99 -272478 95 J1097A 1J1097A 3
G 0 3 3 WGS84 -27100290282 -42399282649 39060926235
D 1 2 7420443 1 3 -6057278 2 3 -7880893
B2017 41922562017 4192256 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 4 237938 59 -3121 86 46188 83 J1097A 1J1097A 4
G 0 4 4 WGS84 -27100400958 -42399007927 39061244901
D 1 2 7276793 1 3 -6513472 2 3 -6206365
B2017 41923 92017 41923 9 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 5 -651482 148 -7890 243 -216836 226 J1097A 1J1097A 5
G 0 5 5 WGS84 -27101290378 -42399012696 39060981876
D 1 2 6472958 1 3 -8265808 2 3 -4737341
B2017 41923152017 4192315 1JField2.0.5.815IGS 228 1 2 26JAVAD 2017 419IFDDPF
C 1 6 -597357 119 -300099 191 -397376 185 J1097A 1J1097A 6
G 0 6 6 WGS84 -27101236252 -42399304905 39060801336
D 1 2 7304153 1 3 -6798780 2 3 -4606728
Jim Frame
Well-Known Member
Star*Net doesn't like G records, which are optional position records. It expects a D record immediately following each C record. There's a checkbox to omit the G records on the export page (I'm not looking at my LS right now), or you can manually remove them with a text editor.
I spoke too soon. When I import the gfile into Starnet and load my geoid file it says the "Geoid Grid File is Too Small to Contain Stations". I am almost positive that the Geoid was built correctly so I am wondering if the GPS data in Starnet is correct. Below is what it looks like once imported into Starnet. I'm used to working with TVF files so not sure if the data looks correct. Any insight will help.
.GPS WEIGHT STDERRCORRELATION
#G0 'V135 Day109 12:00 17181301gps-170512.gfile
#G1 25-25 0.0000 0.0000 0.0000
#G2 0.0069 0.0069 0.0069
#G3 0.0000193 -0.0000085 -0.0000283
G0 'V136 Day109 19:25 17181301gps-170512.gfile
G1 25-4 18.8471 4.8907 8.5263
G2 0.0044 0.0050 0.0051
G3 0.4100934 -0.2400229 -0.4212929
G0 'V137 Day109 19:32 17181301gps-170512.gfile
G1 25-3 34.8614 -27.7843 -27.2478
G2 0.0074 0.0099 0.0095
G3 0.7420443 -0.6057278 -0.7880893
G0 'V138 Day109 22:56 17181301gps-170512.gfile
G1 25-1 23.7938 -0.3121 4.6188
G2 0.0059 0.0086 0.0083
G3 0.7276793 -0.6513472 -0.6206365
G0 'V139 Day109 23:09 17181301gps-170512.gfile
G1 25-6 -65.1482 -0.7890 -21.6836
G2 0.0148 0.0243 0.0226
G3 0.6472958 -0.8265808 -0.4737341
G0 'V140 Day109 23:15 17181301gps-170512.gfile
G1 25-7 -59.7357 -30.0099 -39.7376
G2 0.0119 0.0191 0.0185
G3 0.7304153 -0.6798780 -0.4606728
G0 'V141 Day125 12:00 17181303-170512.gfile
G1 25-24 -24.4452 -13.0736 -15.2209
G2 0.0115 0.0115 0.0118
G3 0.2202779 0.1583951 -0.5995640
#G0 'V142 Day125 12:00 17181303-170512.gfile
#G1 2-2 0.0000 0.0000 0.0000
#G2 0.0065 0.0065 0.0065
#G3 0.0000499 -0.0000296 -0.0000768
G0 'V143 Day125 23:10 17181303-170512.gfile
G1 25-36 34.0327 -18.1554 -14.8455
G2 0.0088 0.0099 0.0103
G3 0.5951252 -0.2538442 -0.6529628
G0 'V144 Day125 23:17 17181303-170512.gfile
G1 25-42 -53.4837 25.1691 3.8283
G2 0.0069 0.0082 0.0077
G3 0.4810159 -0.5219818 -0.7857594
G0 'V145 Day125 23:22 17181303-170512.gfile
G1 25-39 -56.2471 -39.3330 -44.4491
G2 0.0051 0.0074 0.0078
G3 0.7699076 -0.3462691 -0.3543889
G0 'V146 Day125 23:29 17181303-170512.gfile
G1 25-40 -48.1747 -10.1877 -21.6528
G2 0.0119 0.0174 0.0169
G3 0.8321173 -0.6915278 -0.7353877
G0 'V147 Day125 23:34 17181303-170512.gfile
G1 25-41 -29.2015 -34.3982 -38.3890
G2 0.0079 0.0104 0.0099
G3 0.7182642 -0.6624788 -0.8738699
G0 'V148 Day125 23:38 17181303-170512.gfile
G1 25-32 -18.9793 -30.0400 -36.8032
G2 0.0068 0.0099 0.0101
G3 0.6569060 -0.4125088 -0.3140404
G0 'V149 Day125 23:54 17181303-170512.gfile
G1 25-43 -27.1626 -2.2313 -4.9815
G2 0.0046 0.0066 0.0066
G3 0.7601840 -0.5568956 -0.5868981
.GPS WEIGHT STDERRCORRELATION
#G0 'V135 Day109 12:00 17181301gps-170512.gfile
#G1 25-25 0.0000 0.0000 0.0000
#G2 0.0069 0.0069 0.0069
#G3 0.0000193 -0.0000085 -0.0000283
G0 'V136 Day109 19:25 17181301gps-170512.gfile
G1 25-4 18.8471 4.8907 8.5263
G2 0.0044 0.0050 0.0051
G3 0.4100934 -0.2400229 -0.4212929
G0 'V137 Day109 19:32 17181301gps-170512.gfile
G1 25-3 34.8614 -27.7843 -27.2478
G2 0.0074 0.0099 0.0095
G3 0.7420443 -0.6057278 -0.7880893
G0 'V138 Day109 22:56 17181301gps-170512.gfile
G1 25-1 23.7938 -0.3121 4.6188
G2 0.0059 0.0086 0.0083
G3 0.7276793 -0.6513472 -0.6206365
G0 'V139 Day109 23:09 17181301gps-170512.gfile
G1 25-6 -65.1482 -0.7890 -21.6836
G2 0.0148 0.0243 0.0226
G3 0.6472958 -0.8265808 -0.4737341
G0 'V140 Day109 23:15 17181301gps-170512.gfile
G1 25-7 -59.7357 -30.0099 -39.7376
G2 0.0119 0.0191 0.0185
G3 0.7304153 -0.6798780 -0.4606728
G0 'V141 Day125 12:00 17181303-170512.gfile
G1 25-24 -24.4452 -13.0736 -15.2209
G2 0.0115 0.0115 0.0118
G3 0.2202779 0.1583951 -0.5995640
#G0 'V142 Day125 12:00 17181303-170512.gfile
#G1 2-2 0.0000 0.0000 0.0000
#G2 0.0065 0.0065 0.0065
#G3 0.0000499 -0.0000296 -0.0000768
G0 'V143 Day125 23:10 17181303-170512.gfile
G1 25-36 34.0327 -18.1554 -14.8455
G2 0.0088 0.0099 0.0103
G3 0.5951252 -0.2538442 -0.6529628
G0 'V144 Day125 23:17 17181303-170512.gfile
G1 25-42 -53.4837 25.1691 3.8283
G2 0.0069 0.0082 0.0077
G3 0.4810159 -0.5219818 -0.7857594
G0 'V145 Day125 23:22 17181303-170512.gfile
G1 25-39 -56.2471 -39.3330 -44.4491
G2 0.0051 0.0074 0.0078
G3 0.7699076 -0.3462691 -0.3543889
G0 'V146 Day125 23:29 17181303-170512.gfile
G1 25-40 -48.1747 -10.1877 -21.6528
G2 0.0119 0.0174 0.0169
G3 0.8321173 -0.6915278 -0.7353877
G0 'V147 Day125 23:34 17181303-170512.gfile
G1 25-41 -29.2015 -34.3982 -38.3890
G2 0.0079 0.0104 0.0099
G3 0.7182642 -0.6624788 -0.8738699
G0 'V148 Day125 23:38 17181303-170512.gfile
G1 25-32 -18.9793 -30.0400 -36.8032
G2 0.0068 0.0099 0.0101
G3 0.6569060 -0.4125088 -0.3140404
G0 'V149 Day125 23:54 17181303-170512.gfile
G1 25-43 -27.1626 -2.2313 -4.9815
G2 0.0046 0.0066 0.0066
G3 0.7601840 -0.5568956 -0.5868981
Jim Frame
Well-Known Member
I'm away from my computer, but it looks to me that the G0 lines contain vector ID info, the G1 lines contain mark-to-mark delta X, Y and Z, the G2 lines contain estimated X, Y and Z errors, and the G3 lines contain the correlations. There doesn't appear to be any position data, so I think the grid-too-small error is coming from something else. I've seen that error message before, but don't recall the circumstance.