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Hướng dẫn bình sai GPS Huace X20 - chương VII

Xem chủ đề cũ hơn Xem chủ đề mới hơn Go down

Hướng dẫn bình sai GPS Huace X20 - chương VII

Bài gửi  conhueba_b on Sat Sep 24, 2011 1:06 am

7 Chapter VII Input and Output
The full-function and easy-manipulation feature of our software is already shown in the
previous chapters. This chapter will introduce the data input and output.
The full-functional data input/output are provided in our software, of which these
function will surely be perfected, along with the progress of GIS, in the future.
Typically, parts of the output are organized as a segment of result.
7.1 Observation Data, Ephemeris Data Input/Output
As mentioned before, the main program HIT.EXE receives observation data, ephemeris
data in various formats and translates them into RINEX format and particularly, in the
case of some versions of ‘*. HCN’, into *.alm format ephemeris data. Refer to the figure
below:
*.HCN
Main
RINEX
RINEX
(
)
HIT.EXE
*.alm Ephemeris
Others
110. Observation Data Input/Output
You can load observation data mentioned above into project by simply inputting them.
The contents of observation data have been introduced in the Chapter
Project
Management
, of which *.alm and *.HCN is the Compass-defined binary formats. Details
of RINEX is available in the appendix.
124

In addition, HIT.EXE can also receive SP3 precise ephemeris data, as shown in the
figure below:
SP3
Precise Ephemeris
Main
(
*.sp3
)
(
)
HIT.EXE
111. Input Precise Ephemeris
For details of the text format SP3, refers to the appendix. You can load SP3 files from
the observation data properties.
The Satellite alert application receives ephemeris files in *.alm and YUMA format (*.txt),
as shown in the figure below:
YUMA Ephemeris
(
)
*.txt
Satellites Forecast
*.alm Ephemeris
(HITMON.EXE)
*.alm Ephemeris
112.
Satellite Alert Input/Output
YUMA, which is also a text file, can be downloaded from the web like the website of
U.S.C.G. For details about the YUMA, refer to appendix. For details about the satellite
alert application, refer to the chapters about applications.
7.2 Static Baseline Output
Baseline computation result are outputted as text files (*.isb). Each baseline generates
a text file with a name like:
starting file’s name. computing file name. isb.
Duplicate names cannot exist. All
*.isb files are stored in folder RES.
The following example demonstrates the structure of the RES file, as shown in the
table below:
(
)
RES format
Q0072041.Q0092041.isb
125

Compass Detailed Result
File Head
Ver 3.0
Version
2001-06-30 16:11:56
Date
Ephemeris:E:\SAMPLE\CHENGDU\Q0072041.97N
Files
Base files E:\SAMPLE\CHENGDU\Q0072041.97O
Rover files E:\SAMPLE\CHENGDU\Q0092041.97O
Base Unknown
Standing Coor
Station
------------------------------------------------------------------------
Name: Q007 Q009
WGS84 Antenna Height: 1.646 m 1.523
m
WGS84 Lat. : 30:34:25.17000N
30:34:13.73710N
WGS84 Long. : 104:16:13.16999E
104:17:07.27053E
WGS84 Height: 478.490 m 598.230
m
Format
Obs data:L1
Sta rt Time:1998-07-23 23:49:45
Session
End Time:1998-07-24 01:20:45
Epoch Interval:60 Sec.
Epoch Numbers: 92
Satellite No. 2 7 16 15 4 14 24
Obs. Epoch
Sta rt 0 0 0 1 29 55 73
End 91 91 91 7 91 91 91
Base Satellite:2
Triple Difference
126

-----------------------------------------------------------------------
MEASUREMENTS : 290 REJECTED : 0 RMS : 0.0102
Baseline : -1438.6809 -165.3117 -301.3006 1479.1595
Sta. name WGS84_Lat. WGS84_Lon. WGS84_Alt.
Geodetic Coor.
Start Point : 30°34'25.1700" N 104°16'13.1700" E 478.4900
End Point : 30°34'13.5327" N 104°17'07.0192" E 492.7970
Sta. name WGS84_X WGS84_Y WGS84_Z
Geocentric
Start Point : -1354895.0577 m 5326990.7575 m
Coordinates
3225531.2186 m
End Point : -1356333.7387 m 5326825.4458 m
3225229.9180 m
Variance covariance matrix:
CovarianceMatrix
x y z
x 3.967438E-003 -8.410580E-004 1.614656E-003
y 3.260705E-003 -9.790217E-003
z 5.758008E-002
Cycle Slips
--------------------- Repaired Cycle Slips -----------------------------
Reparation
Repair 7 Cycle Slip, Epoch 0 ---> 91
>>>>>>> L1, Used = 92, Rejected = 0, RMS = 0.046
<<<<<<
Repair 16 Cycle Slip, Epoch 0 ---> 91
L1 Step 2 epoch 23 cycle -2.130
>>>>>>> L1, Used = 82, Rejected = 0, RMS = 0.053
<<<<<<
Repair 15 Cycle Slip, Epoch 1 ---> 7
>>>>>>> L1, Used = 7, Rejected = 0, RMS = 0.136
<<<<<<
Repair 4 Cycle Slip, Epoch 29 ---> 91
127

>>>>>>> L1, Used = 63, Rejected = 0, RMS = 0.040
<<<<<<
Repair 14 Cycle Slip, Epoch 55 ---> 91
L1 Step 1 Epoch 72 cycles 4.958
>>>>>>> L1, Used = 35, Rejected = 0, RMS = 0.064
<<<<<<
Repair 24 Cycle Slip, Epoch 73 ---> 91
>>>>>>> L1, Used = 19, Rejected = 0, RMS = 0.048
<<<<<<
Double-diff. Float
Double-diff. Float
-----------------------------------------------------------------------
MEASUREMENTS : 296 REJECTED : 2 RMS : 0.0106
Baseline : -1438.6823 -165.4330 -301.3372 1479.1819
Sta. name WGS84_Lat. WGS84_Lon. WGS84_Alt.
Start Point : 30°34'25.1700" N 104°16'13.1700" E 478.4900
End Point : 30°34'13.5336" N 104°17'07.0203" E 492.6775
Sta. name WGS84_X WGS84_Y WGS84_Z
Start Point : -1354895.0577 m 5326990.7575 m 3225531.2186
m
End Point : -1356333.7400 m 5326825.3245 m
3225229.8814 m
Variance covariance matrix:
x y z
x 5.167246E-001 -5.490692E-001 -8.237241E-002
y 8.172838E+000 1.448511E+000
z 2.980957E-001
Satellite No. Ambiguity Variance Ambiguity
128

Var ia nce
7 -3615.0 0.0516
16 6034.9 0.0566
15 140697.7 0.1498
4 4017402.0 0.0269
14 8059196.8 0.1351
24 10912009.0 0.0484
------------- Ambiguity Analysis --------------------
Ambiguity
Analysis
****** Ratio = 32.4 ******
7 0.0 0.0 -3615.0 0.052
16 0.0 0.0 6035.0 0.057
15 0.0 0.0 140698.0 0.150
4 0.0 1.0 4017402.0 0.027
14 0.0 0.0 8059197.0 0.135
24 0.0 0.0 10912009.0 0.048
Double-Diff. Integer
Double-Diff.
-----------------------------------------------------------------------
Integer
MEASUREMENTS : 298 REJECTED : 0 RMS : 0.0123
Baseline : -1438.6879 -165.4821 -301.3532 1479.1961
Sta. name WGS84_Lat. WGS84_Lon. WGS84_Alt.
Start Point : 30°34'25.1700" N 104°16'13.1700" E 478.4900
End Point : 30°34'13.5339" N 104°17'07.0210" E 492.6296
Sta. name WGS84_X WGS84_Y WGS84_Z
Start Point : -1354895.0577 m 5326990.7575 m
3225531.2186 m
End Point : -1356333.7457 m 5326825.2754 m
3225229.8654 m
129

Variance covariance matrix:
x y z
x 1.909856E-002 -1.431349E-002 -1.332060E-002
y 3.999952E-002 2.857243E-002
z 3.325489E-002
7.3 Kinematics Route Input/Output
To output the kinematics route results, select
‘View Geodetic Coordinates’
and
‘View
Projective Coordinate’
.
The kinematics route files is *.ism format file. Every time you modify the base station
coordinates and view the geodetic/projective coordinates, kinematics route files will
renew their contents according to the given coordinate type.
You can View Geodetic Coordinates, if the fix style of the base station is BLH or BL.
The table below shows an example of the ISM file, of which the contents reflect the
longitude/latitude of the kinematics route:
a1, 23:08:20.62052N, 113:20:07.11934E, 91.128, 2_9
a2, 23:08:20.55980N, 113:20:07.36916E, 90.329, 2_8
a3, 23:08:20.50653N, 113:20:07.62159E, 89.915, 2_9
1, 23:08:21.20094N, 113:20:07.85706E, 87.551, 1_line
2, 23:08:21.20154N, 113:20:07.85755E, 87.612, 1_line
3, 23:08:21.20231N, 113:20:07.85808E, 87.682, 1_line
7, 23:08:21.21486N, 113:20:07.90195E, 88.062, 1_line
8, 23:08:21.20888N, 113:20:07.92042E, 88.029, 1_line
15, 23:08:21.14518N, 113:20:08.09555E, 86.841, 1_line
19, 23:08:21.14533N, 113:20:08.11051E, 86.781, 1_line
11, 23:08:21.15061N, 113:20:08.11059E, 87.145, 2_1
20, 23:08:21.15080N, 113:20:08.11088E, 87.202, 1_line
21, 23:08:21.16120N, 113:20:08.11213E, 87.930, 1_line
tttt, 23:08:20.73803N, 113:20:07.18999E, 89.494, 2_4
There are four parts in each line of this file, as shown in the table below:
130

Name longitude, latitude, Height property
A comma is used between every two parts. The ‘Name’ could be one of the survey
point, interpolating point and track point which are distinguished by the ‘property’. The
‘property’ has a structure like:
Code Part I Part II Note
0 Signal Posi. Points
1 _ Name Track Points
2 _ Epochs Mea. Point/Inserted Point
There are three parts of a property data. The first part is code, which is 1 or 2 here, the
second is the connection mark which is ‘_’ here and the third one is a line name or a
number representing the epoch amount.
You can View Geodetic Coordinates, if the fix style of the base station is xyH or xy. The
table below shows an example of ISM file, of which the contents reflect projective
coordinates of the kinematics route:
You can use the ISM files containing xy values in the ‘edit and calculate’
application (
).
HitGis.exe
a1, 9996.025, 9998.256, 91.128, 2_9
a2, 9994.124, 10005.355, 90.329, 2_8
a3, 9992.452, 10012.530, 89.915, 2_9
1, 10013.785, 10019.326, 87.551, 1_line
2, 10013.804, 10019.340, 87.612, 1_line
3, 10013.828, 10019.356, 87.682, 1_line
7, 10014.208, 10020.606, 88.062, 1_line
8, 10014.022, 10021.130, 88.029, 1_line
15, 10012.039, 10026.104, 86.841, 1_line
19, 10012.042, 10026.529, 86.781, 1_line
11, 10012.204, 10026.532, 87.145, 2_1
20, 10012.210, 10026.541, 87.202, 1_line
21, 10012.530, 10026.578, 87.930, 1_line
tttt, 9999.631, 10000.283, 89.494, 2_4
131

Besides, the kinematics route results, which come from the rover data collected by the
marine survey software, can be translated into water depth file (*.ss). The file structure
refers to the manual of the marine survey software.
132

7.4 Observation Station Input/Output
7.4.1 Detailed Results Report in Text File
Run ‘Results’> ‘Output Detailed Results (txt)’ to output the station information in text file
with a name like:
Projectname.iso
The table below shows an example of ISO file.
Point Name
:
Q007
Fixed
x y
Single Posi. 30:34:25.17000N
104:16:13.17000E
478.4900
Free 0.0032
30:34:25.16568N
104:16:12.89597E
519.9834
3D 0.0032 30:34:25.37297N
104:16:13.42032E
584.0841
Plane Fixed
123456.0000
789012.0000
Leveling 0.0026
584.0867
Point Name
:
Q009
Fixed
B L H
Single Posi. 30:34:13.74000N
104:17:07.27000E
598.2300
Free 0.0049
30:34:13.52975N
104:17:06.74668E
534.1266
3D Fixed 30:34:13.73710N
104:17:07.27050E
598.2300
Plane 0.0032
123101.2008
790447.8595
Leveling Fixed
598.2300
Projectname.iss
‘Result’>‘Brief Result Output (txt)’ to output station information in a text file with a name
like:
133

The table below shows an example of ISO file.
Q007, 9951.8508, 15104.7795,
Q009, 9597.0500, 16540.6363,
Q036, 10015.0172, 10609.7186,
Q041, 8203.7552, 12704.5255,
Q048, 12777.3119, 18309.2721,
Q049, 8279.4190, 15021.6682,
Q050, 10000.0000, 10000.0000,
ISS files only contain plane coordinates. You can output this file into the Controller. For
example, you can run the RTK software in the S60 Controller.
134


7.5 Output/Input: Others
You can also print out the observation data list, baseline vectors list and observation
stations list. The following section introduces the often-used output options like output
result report, output network, and output closing Error files.
7.5.1 Output Result Report
Run ‘
Result
’>‘
Report
’. The Report output window will appear, as shown in the figure
below:
113. Output Result Report
135


7.5.2 Output Networ
You can set up print style in the
Properties
dialog-box of the network. Properties of the
network that have been introduced in Chapter 6.3. The figure below shows a printed
network with setting of ‘fit paper’:
114. Print Network
7.5.3 Output Closing Error
The software will add the closing Error checking result to the end of the closing Error
file:
Closing Error Filename:
Projectname.isc
The table below shows an example of the closing Error file. The following information
are listed: baselines forming each closed loop, loop type (synchrony, asynchrony and
duplicate), closing Error, relative closing Error and total length of loop, etc.
136

*** ** *** *** ** *** ** *** *** ** *** ** *** *** ** *** ** *** *** ** *** ** *** *** ** *** ** *** *** ** *** *** ** *** ** *
Cl ose d Lo ops
2001-06-30 16:14:00
*** ** *** *** ** *** ** *** *** ** *** ** *** *** ** *** ** *** *** ** *** ** *** *** ** *** ** *** *** ** *** *** ** *** ** *
Na me So lut io n mea n squ are e rror X A ddi ti on Y Add it io n ZAd di ti on Slo pe -dis .
------------------- ------------------------- -- ------------------------- --------------------
Q0 07 Q 009 . 204 1 32. 3 0. 01 23 -14 38. 6 879 -16 5. 48 21 -30 1. 35 32 14 79. 19 61
Q0 07 Q 048 . 204 8 49. 9 0. 00 94 -27 63. 4 11 5 -2 16 3. 58 18 243 6. 61 53 42 72 .5 430
Q0 09 Q 048 . 204 8 26. 4 0. 011 7 -1 32 4. 722 7 -1 99 8. 09 03 27 37. 96 21 36 39 .1 883
------------------- ------------------------- -- ------------------------- --------------------
Simu l. L oo ps( 3Ba seli ne s) R el at ive Erro r =1 .2 1p pm X =-0 .0 00 9 Y= -0. 00 94 Z = 0 .0 064 93 90 .9 27 4
Na me So lut io n mea n squ are e rror X Ad di ti on Y Add it io n ZAd di ti on Slo pe -dis.
------------------- ------------------------- -- ------------------------- --------------------
Q0 07 Q 049 . 205 3 99. 9 0. 00 95 -13 2. 19 16 87 3. 193 4 - 142 3. 17 72 16 74. 92 53
Q0 07 Q 009 . 204 1 32. 3 0. 01 23 -14 38. 6 879 -16 5. 48 21 -30 1. 35 32 147 9. 19 61
Q0 09 Q 049 . 205 2 99. 9 0. 00 77 13 06. 5 003 10 38 .6 70 6 -11 21. 8 161 20 11. 03 23
------------------- ------------------------- -- ------------------------- --------------------
Asynch r Loo ps(3 b ase lin es) Re la ti ve Error = 1. 96 ppm X= 0. 00 39 Y= -0 .0 049 Z = 0 .0 07 9 5 16 5. 153 6
Na me So lut io n mea n squ are e rror X Ad di ti on Y Add it io n ZAd di ti on Slo pe -dis.
-------------------- -------------------------- ------------------------- --------------------
Q0 36 Q 041 . 204 1 21. 4 0. 01 23 -22 55. 5 877 38 7. 07 22 -15 59. 5 986 27 69 .4 49 2
Q0 36 Q 041 . 204 2 10. 1 0. 01 02 -22 55. 5 870 38 7. 07 37 -15 59. 6 018 27 69 .4 50 6
-------------------- -------------------------- ------------------------- --------------------
Du pli cat e ( 2 ba seli ne s) R el at ive Erro r= 0. 6 5pp m X =-0 .0 00 7 Y= -0. 00 15 Z = 0. 0 032 55 38 .8 99 8
137


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