[teqc] Septentrio SBF translation - blank header detail

Neville Palmer N.Palmer at gns.cri.nz
Tue May 15 22:28:24 MDT 2018


I am attempting to generate RINEX data from Septentrio PolaRx5 SBF files that were recently recorded during 2 to 5 day campaign observations.

This is the first time we have used Septentrio receivers and I am having issues with consistently populating the RINEX header information with the receiver information contained in the SBF file.

I am using teqc version 2018Mar15 and have tried using both Windows 10 and a Linux with the same result.

The following are examples of my results.

The following command:
teqc ++config 19270860.18_
Correctly included the following in the output:
-O.s[ystem] G
-O.r[un_by] " "
-O.o[perator] "GNS"
-O.ag[ency] "GNS"
-O.mo[nument] "GNS50"
-O.mn "GNS50"
-O.rn "3022413"
-O.rt "SEPT POLARX5"
-O.rv "5.1.2"
-O.an "-Unknown-"
-O.at "-Unknown-"
-O.px[WGS84xyz,m] -4512138.7928 746727.7067 -4433251.1139
-O.pe[hEN,m] 0.0000 0.0000 0.0000
-O.leap 18

However if I use the following command:
                teqc 19270860.18_ > 19270860.18o
None of the above detail is included in the resulting RINEX header with most of the fields showing values “-Unknown-“ and all zeros for the approx. position xyz, as shown below:
     2.11           OBSERVATION DATA    M (MIXED)           RINEX VERSION / TYPE
teqc  2018Mar15                         20180516 03:21:16UTCPGM / RUN BY / DATE
Linux2.6.32-573.12.1.el6.x86_64|x86_64|gcc|Win64-MinGW64|=+ COMMENT
BIT 2 OF LLI FLAGS DATA COLLECTED UNDER A/S CONDITION       COMMENT
-Unknown-                                                   MARKER NAME
-Unknown-           -Unknown-                               OBSERVER / AGENCY
-Unknown-           -Unknown-           -Unknown-           REC # / TYPE / VERS
-Unknown-           -Unknown-                               ANT # / TYPE
        0.0000        0.0000        0.0000                  APPROX POSITION XYZ
        0.0000        0.0000        0.0000                  ANTENNA: DELTA H/E/N
     1     1                                                WAVELENGTH FACT L1/2
     7    L1    L2    C1    P1    P2    S1    S2            # / TYPES OF OBSERV
SNR is mapped to RINEX snr flag value [0-9]                COMMENT
  L1 & L2: min(max(int(snr_dBHz/6), 0), 9)                  COMMENT
  2018     3    27     0     0    0.0000000     GPS         TIME OF FIRST OBS
    18                                                      LEAP SECONDS
                                                            END OF HEADER

If I instead use the tbin option as follows:
                teqc -tbin 1h TEMP +obs + 19270860.18
The header of the first RINEX file generated looks identical to the example above. The second and all subsequent files have complete and correct header information similar to the following:
     2.11           OBSERVATION DATA    M (MIXED)           RINEX VERSION / TYPE
teqc  2018Mar15                         20180516 03:19:47UTCPGM / RUN BY / DATE
Linux2.6.32-573.12.1.el6.x86_64|x86_64|gcc|Win64-MinGW64|=+ COMMENT
BIT 2 OF LLI FLAGS DATA COLLECTED UNDER A/S CONDITION       COMMENT
GNS50                                                       MARKER NAME
GNS50                                                       MARKER NUMBER
GNS                 GNS                                     OBSERVER / AGENCY
3022413             SEPT POLARX5        5.1.2               REC # / TYPE / VERS
-Unknown-           -Unknown-                               ANT # / TYPE
-4512138.7928   746727.7067 -4433251.1139                  APPROX POSITION XYZ
        0.0000        0.0000        0.0000                  ANTENNA: DELTA H/E/N
     1     1                                                WAVELENGTH FACT L1/2
     7    L1    L2    C1    P1    P2    S1    S2            # / TYPES OF OBSERV
    18                                                      LEAP SECONDS
SNR is mapped to RINEX snr flag value [0-9]                COMMENT
  L1 & L2: min(max(int(snr_dBHz/6), 0), 9)                  COMMENT
  2018     3    27     1     0    0.0000000     GPS         TIME OF FIRST OBS
                                                            END OF HEADER

Is it possible to consistently have teqc correctly populate the header information of the first RINEX file generated using the information contained in the raw SBF file?

A little further investigation has shown that for 3 SBF files (out of 56 files recorded at 13 stations) the header information does get included in the RINEX file when using just a basic ”teqc <filename>” command. All the other 53 files resulted in “-Unknown-“ values in the headers. The three successful files all came from the same receiver (all data was recorded with two identically configured receivers). These 3 files were all the first file of a multi day occupation. 5 other stations were observed with the same receiver. The three “successful” files still had all zeros for the approx. position xyz.

Thanks
Neville

Neville Palmer  I  Geodetic Surveyor
GNS Science  I  Te Pū Ao
1 Fairway Drive, Avalon, Lower Hutt 5010
PO Box 30 368, Lower Hutt 5040, New Zealand I Ph +64 4 570 1444
DDI +64 4 570 4714  I  Mob +64 27 221 8845
Web: http://www.gns.cri.nz/  I  Email: n.palmer at gns.cri.nz<mailto:n.palmer at gns.cri.nz>

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