Source: Chen Chao Science Network Blog
http://blog.sciencenet.cn/blog-858128-1015110.html
1. RINEX file to change the sample rate:
teqc -O.dec 30s filename1 > filename2 means to extract observations from filename1 (Rinex format) at equal intervals of 30 seconds and save the results as filename2.
2. Cutting of RINEX files: Use time window to cut RINEX files arbitrarily.
2.1 [start]+d[Y,M,d,h,m,s] specifies the time interval+d[Y,M,d,h,s] with the starting time of observation of the RINEX file as the upper limit.
For example: to extract the observation data from the observation file 60.06o 30min before the observation epoch and save it as 60_s30min.06o, run the command: teqc +dm 30 60.06o > 60_s30min.06o
For example: to extract the observation data from the observation file 60.06o 1h before the observation epoch and save it as 60_s1h.06o, run the command: teqc +dh 1 60.06o > 60_s30min.06o
For example: to extract the observation data from the observation file 60.06o 30min before the end of the observation and save it as 60_e30min.06o, you can run the command: teqc -dm 30 60.06o > 60_e30min.06o
For example: to extract the observation data from the observation file 60.06o 1h before the end of the observation and save it as 60_e1h.06o, you can run the command: teqc -dh 1 60.06o > 60_e30min.06o
2.2 -st[YY MM dd hh mm ss[.sss...]] -e[YY MM dd hh mm ss[.sss...]] Use the -st configuration option to specify a time window from ... to . ..
For example: extract the observation data from the observation file test08.o 3 hours after the start of 5:00 (5:00-8:00), and save it as text1.o, you can run the command:
teqc -st 05:00:00 +dh 3 test08.o >text1.o
For example: to extract the observation data from 3:00 to 6:00 on January 1, 2008, you can run the command (be careful not to have too many spaces!):
teqc -st 08:01:01:03:00:00 -e 08:01:01:06:00:00 test08.o >text2.o
3. Merging of RINEX files:
Run:>teqc file1 file2…>my_file to combine file1 file2… into a my_file RINEX file.
Note that RINEX files such as file1 file2... must be consecutive in time, and there will be a comment line at the merging of adjacent files: RINEX FILE SPLICECOMMENT.
For example: algo0010.08o and algo0020.08o are the observation data of ALGO stations for two consecutive days respectively. Combine the two to obtain the file algo[12].08o. The command is as follows:
teqc something0010.08o something0020.08o >something[12].08o
(Note: This concatenated command only occurs in concatenated RINEX OBS files, so the RINEX standard does not recognize this comment after the headers of RINEX NAV and RINEX MET files.)
4. Format conversion of observation files from different receivers (Translation)
For example, assume that the RT17 format data contained in the fbar.bin file downloaded from the Trimble SSE receiver is GPS week 866, August 11, 1996 to August 17, 1996. Then, execute
teqc -tr s -week 866 +nav fbar2240.96n fbar.bin > fbar2240.96o
5. Selection of satellite systems and disabling of specific satellites. For GPS/GLONASS dual-satellite receivers, TEQC can be used to select satellites.
For example: the command to remove GLONASS satellite data is: > teqc -R input file > output file
teqc -R unb12600.03o > unb12600.new,
For example: the observation data command of GPS satellites with prn# disabled is:>teqc -G#input file>output file.
teqc -G6 test.08o >test.#6.08o
6. Set the satellite altitude. Low-altitude satellites need to be considered when performing tropospheric and ionospheric delay analysis.
For example: use the following command to set the satellite altitude angle limit to 5°:
teqc -set_mask 5 input file > output file
7. Select the observation type.
For example, to extract the single frequency observation L1 (case insensitive) from the test.08o file, run the following command:
teqc -O.obs L1 test.08o >test.L1.08o
For example: to extract L1, L2, P1, P2 (case insensitive, + can be omitted), run the following command:
teqc -O.obs L1+L2+P1+P2 test.08o >test.L1L2P1P2.08o
8. Quality Checking
According to whether the navigation file information is used or not, TEQC is divided into two checking methods: qc-lite and qc-full.
8.1 qc-lite (no navigation files)
For example: run teqc + qc unb12600.03o
TEQC checks the quality of the file unb12600.03o in qc-lite mode. The result of the quality check will generate report file unb12600.03S and data files unb12600.ion (Ionospheric delay of L1 carrier), unb12600.iod (rate of change of ionospheric delay), unb12600.mp1 (L1 carrier C/A code or Multipath effect of P code pseudorange), unb12600.mp2 (multipath effect of L2 carrier P code pseudorange), unb12600.sn1 (signal to noise ratio of L1 carrier), unb12600.sn2 (signal to noise ratio of L2 carrier).
8.2 qc-full (input navigation file or corresponding N file in the same directory)
Input the RINEX observation data file and the navigation data file at the same time, that is, run >teqc +qc nav unb12600.03n unb12600.03o; or the navigation data file and the observation data file are in the same directory, TEQC will automatically search for the navigation data file without using - nav is specified, that is, run >teqc +qc unb12600.03o, at this time TEQC will check the quality of the file unb12600.03o in qc-full mode. In addition to the report file and data file in qc-lite mode, the results of the check also add the position information of satellite and receiver antenna and two data files unb12600.azi (azimuth) and unb12600.ele (elevation).
9. Single-point positioning calculation using TEQC
The instruction to calculate the pseudo-range single-point positioning result (x, y, z) of each epoch of unb12600.03o is: >teqc +qc +eepx unb12600.03o > unb12600.xyz. Compare this result with the self-written program.
10. Trimble original format (t01, t02) to rinex format
runpkr00 -g -d mn163321.t01
teqc -tr d -O.mn mn16 -O.mo mn16 -O.o chenchao -O.pe 0.000 0 0 -O.an 60183636 -O.at TRM41249.00 +nav mn163320.15n mn163321.dat > mn163320.15o