GAMIT软件Track模块使用帮助Word下载.docx

1、 4-char code for reference site. -d list of sites to be processed. If not specified all sites in data stream will be processed （there is a limit on maximum number of sites that can be processed depending on max_site in track. The reference code should NOT be given here.） -n Specifies a root name to

2、which output will be directed （.out is appended for stdout output）. Use in the pos_root, sum_file and csv_file names the will be replaced by this string.Command file name must be given.% trackRTr list of rinex files （site names are generated from the first 4-characters of rinex file names）VERSIONS:-

3、 - Fixed time-equate iin SaveObsA so that a differnce of more than seconds in needed for a new epoch （trackRT only） Added reference relative humidity for GPT. （120103） - Handle bad PRN from BNC where G23 = 203. - Version to handle missing satellites in SP3 files （110505） - Version to handler BNC and

4、 greater that is now outputing ascii rather than binary data （trackRTB handles （110501） - Initial version 100301 （2010 March 1）INTRODUCTION:-TrackRT/TrackRTB and trackRTr have many commands that allow it be controlled both when started and during runs. Below the detailed commands are given and here

5、we give the minimum commands needed.SP3_DIR : （unless sp3 files are in the current directory）SITE_POS: Site positions must be given for every site to be processed. SITE_STATS: To set the apriori sigma and process noise for the sites. NOTE: The reference site position should be set to zero for the ap

6、riori sigma and process noise. Typical site_stats would be where cit1 here is the reference site. site_stats all cit1 ATM_STATS: By default atmospheric delays are not estimated, and normally these should be. Normally the reference site is set to zero when site separations are less the 500-1000km. Ty

7、pical atm_stats command would be atm_stats all ! Unit m/sqrt（sec） - = 0.03 m/sqrt（day）If mixed antenna and receiver types are used ANTE_OFF: To specify the antenna heights and types and receiver typesANTMOD_FILE: Must be given to get the antenna phase center modelsRCV_TYPE: Needed for mixed receiver

8、 types （entry can be specified in ANTE_OFF also and this command would not be needed）.DCB_FILE: Up to date, data code bias （DCB） file （part of GAMIT ftp area）.IncludingUPDATE_FILE is useful so that trackRT can be controlled on the fly.TrackRTB should be used for older versions of BNC. If no files ar

9、e createdby trackRT or trackRTB （list of files should be listed shortly after the program is started） then try using the other version. The program are identicalexcept trackRTB is expecting a binary data stream. COMMANDS-Input/Output commands- SP3_DIR - Directory where sp3 files are stored - Center

10、for orbits （default igs, igr and igu also tested） POS_ROOT durationSet the root part of the name for the output files. Root part of name. When included in the , the is replaced with the -n string. Duration of data in each file. The designations of d, h, or m may be used to specify the units of days,

11、 hours, minutes. Default is d.The position file names take the form: （see commands below）.sitestart timedatatypeThe resolution of the which is modulo the output intervaldepends on the output duration. For output durations greater than orequal to 1-day, the time is given as YYYYMMDD. For intervals sh

12、orterthan 1-day, it is YYYYMMDD:HHMN. Minium output interval is 1 minute. SUM_FILE Sets the root part of the summary file name. Using in the namewith be replaced by the -n string. （Default if command is not givenis trackRT or the -n string when -n used）. File names are time taggedaccording to the po

13、s_root output interval. CSV_ROOT Set the root part of the name for comma separated values （CSV） outputfile. These files are used for AmCharts web plots. DCB_FILE Set the name of the data-code-bias （DCB） file. This file is part of the GAMIT tables directory and should be updated regularly. It is used

14、 toremove biases in the Melbourne-Wubbena widelanes. The receiver type canbe specified with the RCV_TYPE or ANTE_OFF commands. ANTMOD_FILE Sets the name of a standard IGS antex file with phase center models forthe GPS ground antennas. Antenna types at specific sites are given withthe ANTE_OFF comman

15、d. This command my be used multiple times for sitespecific model with new models replacing previously read ones. UPDATE_FILE Allows new trackRT commands to be issued during a run. Once the file is read it needs to be deleted before the trackRT will re-read it. File is only read if it exists. NOTE: F

16、ile should be removed before trackRT isrun or else it will be read when the command file is read （ie., it willoverwrite the commands in the command file. OUT_TYPE Specifies types of output coordinates. All types can specified in a single string with no spaces. The types areNEU - North, East, Up diff

17、erences from the reference site or from the coordinates given in the REF_NEU command. GEOD - Geodetic latitude, longitude and height （in the GEOD format, the total atmosheric delay is given, while in the other formats the adjustment to the apriori delay is given）.XYZ - Cartersian XYZ coordinatesDHU

18、- Delta horizontal and Up coordinates from the apriori coordinates of each site （default output type） OUT_SIG_LIMIT Sets the maximum sigma of a position estimate for it to be output.If pseudorange data types are used, the default value of 1 m needsto increased to 10-100 meters. Analysis commands- DA

19、TA_NOISE L2 （m）P1 （m）P2 （m）Elev Weight PRNAllows specificiation of the noise in the L1 phase, L2 phase,P1 range and P2 range, and the weight given to elevation angledepepence （at ver ; variance is scale by （1+（W/sin（el）2） where W is the . These values affect the sigmas printed forthe position determ

20、inations Optional: PRN may be added and noise assigned to that PRN （ifnon-PRN form is used, this will replace all PRN specific valuesso use the non-PRN first followed by specific PRN values DATA_TYPE Specifies type of data to process. Types supported are L1 L2 LC P1 P1 PCwhich can be combined in a c

21、ontiguous string. Files names include thisstring at the end.Vers : Only LC, LCPC and PC have been tested. Specifically L1 only datahave not been fully implemented yet. USE_GPTGMF Set the used of the GPT temperature pressure model and the GPT dry and wetmapping functions. Optional relative humity add

22、ed vers ; default .Default is the older MTT atmospheric model.Site and Antenna informationSite information is entered by first giving the command and then theinformation by site on the subsequent lines SITE_POS Site Y （m）Z （m）Vx （m）Vy （m）Vz （m）Epoch （yrs）Site is the four character name of the site （

23、more characters can be included but only the first 4 are checked）. Site names that do not appeat in the listof sites to be processed are ignored）. The remainder of the line contains positon and velocity and the epoch in deciminal years to which the position refers. ANTE_OFF ARP dN （m）ARP dE （m）ARP d

24、U （m）Antenna NameReceiver CodeSpecifies the type of antenna and its position of antena reference point （ARP） at each site. The antenna name including radome should be specified with theofficial IGS name for a standard ANTEX file or with a unique name that appearsin the ANTEX file for site specific c

25、alibrations. （Note: There is oneadditional character in the long antenna and this extra characterbefore the radome name must be removed. The antenna name and radome can be copied directly from the rinex file if present. One more ANTEX files must bespecified with the ANTMOD_FILE command for the anten

26、na names to be useful. The receiver type DCB code can be optionally specified here as well （See RCV_TYPE command）. RCV_TYPEReceiver code N/P/CSpecifies the type of data-code-bias （DCB） correction needed for the receiver. Code specifies the type of L1 and L2 ranges being measures. The choices areP -

27、Pcode, C - C/A and N C/A with cross corelation for L2 range. The codescan be found in gamit/tables/. These codes can also be given in theante_off command. An up-to-date DCB_FILE command must be used to specify theDCB biases. The files are available from the MIT ftp site and update once permonth. SIT

28、E_STATSApriori Sigmas in XYZ （m）RW noises in XYZ （m/sqrt（sec）Gives statistics to assign to the kinematic station positions. The Apriori Sigma in XYZ are the three sigmas in XYZ for the initial postion andRW noise in XYZ are the three sigmas for the random walk in position. Unitsof the ransom walk are m/ssqrt（s）.ALL can be used for the station name and the same statistic