===========================================================
 Hong Kong Satellite Positioning Reference Station Network
             GNSS Automatic Computation Service
===========================================================

Applicant: Tai Man CHAN <ChanTai-man@hotmail.com>

Request: 2012-07-02 18:15:06 (HKT)
Process: 2012-07-02 18:17:08 (HKT)

New Station Name: IS1

Computation Accuracy: 10mm + 3ppm

Upload files: 1. IS1_10.12o    263Kb
              2. IS1_20.12o    281Kb
              3. IS1_10.12n     11Kb
              4. IS1_20.12n     11Kb


Reference Station
----------------------------------------------------------------
No.  Station      Latitude (N)      Longitude (E)     Ell.Height
----------------------------------------------------------------
1     HKKT     22^ 26' 41.66174"  114^ 03' 59.63436"    34.557m
2     HKLT     22^ 25' 05.28272"  113^ 59' 47.84432"   125.935m
3     HKFN     22^ 29' 40.87008"  114^ 08' 17.40609"    41.210m
----------------------------------------------------------------


Observation Session
-------------------------------------------------------
Sess     Start(HKT)         End(HKT)     Duration
-------------------------------------------------------
1    2012-04-12 09:16   2012-04-12 09:39   00:23   Pass
2    2012-04-12 10:35   2012-04-12 11:01   00:26   Pass
-------------------------------------------------------




Checking Origin - Misclosure Summary
--------------------------------------------------------------------
Session   Origin      Length   Latitude   Longitude   Allowable
--------------------------------------------------------------------
1       HKKT - HKFN    9.2km      7.3mm     10.7mm      58.7mm  Pass
        HKKT - HKLT    7.8        1.1        3.2        50.8    Pass
        HKLT - HKFN   16.9        9.9        3.1        60.0    Pass
--------------------------------------------------------------------

2       HKKT - HKFN    9.2km     10.7mm      4.6mm      58.7mm  Pass
        HKKT - HKLT    7.8        6.2        5.2        50.8    Pass
        HKLT - HKFN   16.9        2.5        0.7        60.0    Pass
--------------------------------------------------------------------


Baseline Ambiguity Status and Quality
--------------------------------------------------------------------
No. From  To     Sess  Dist  GDOP 3DQly  Fix  IonoAct Frequency
--------------------------------------------------------------------
1   HKFN  IS1       1   9.9   2.7   0.5  Yes  Auto    L1 + L2
2   HKKT  IS1       1   1.0   2.7   0.3  Yes  Auto    L1 + L2
3   HKLT  IS1       1   7.0   2.7   0.6  Yes  Auto    L1 + L2
--------------------------------------------------------------------
4   HKFN  IS1       2   9.9   3.4   1.1  Yes  Auto    L1 + L2
5   HKKT  IS1       2   1.0   3.4   1.0  Yes  Auto    L1 + L2
6   HKLT  IS1       2   7.0   3.4   1.0  Yes  Auto    L1 + L2
--------------------------------------------------------------------



Repeated Baseline Summary
--------------------------------------------------------------------
Sess  GDOP    Delta Lat    Delta Long   Delta Ht  Remarks
--------------------------------------------------------------------
HKFN - IS1
1     2.7   -2'52.70238"  -4'50.27115"  -40.6536
2     3.4   -2'52.70243"  -4'50.27143"  -40.6800
--------------------------------------------------------------------
   Spread:        1.7mm         8.3mm     26.4mm  2 Baselines
Allowable:       84.9mm        84.9mm    254.6mm  L=9.853km

--------------------------------------------------------------------
HKKT - IS1
1     2.7    0'06.50615"  -0'32.49968"  -34.0246
2     3.4    0'06.50612"  -0'32.49985"  -34.0192
--------------------------------------------------------------------
   Spread:        1.0mm         5.2mm      5.4mm  2 Baselines
Allowable:       29.4mm        29.4mm     88.2mm  L=0.951km

--------------------------------------------------------------------
HKLT - IS1
1     2.7    1'42.88518"   3'39.29020" -125.4004
2     3.4    1'42.88541"   3'39.29046" -125.3827
--------------------------------------------------------------------
   Spread:        6.8mm         7.5mm     17.7mm  2 Baselines
Allowable:       66.0mm        66.0mm    197.9mm  L=7.025km

--------------------------------------------------------------------



Least Squares Network Adjustment - Residuals Report
--------------------------------------------------------------------
Baseline     Session        Input   Std Err  --Residual--  Allowable
                             (m)      (mm)     XYZ    ENH     ENH
--------------------------------------------------------------------
1    HKFN -     1    DX    6761.4925   2.2   -13.6    6.7  60.0 Pass
     IS1             DY    5207.3999   4.0    14.0   -4.7  60.0 Pass
                     DZ   -4924.5718   2.5     2.5   17.9 180.0 Pass
                     DV    9853.2331
--------------------------------------------------------------------
2    HKFN -     2    DX    6761.5093   2.2     3.3   -1.2  60.0 Pass
     IS1             DY    5207.3815   4.0    -4.4   -6.4  60.0 Pass
                     DZ   -4924.5835   2.5    -9.1   -8.5 180.0 Pass
                     DV    9853.2407
--------------------------------------------------------------------
3    HKLT -     1    DX   -5188.6461   2.2     6.3   -5.0  46.7 Pass
     IS1             DY   -3762.2086   4.0    -1.8    1.5  46.7 Pass
                     DZ    2877.4537   2.5    -0.1   -3.9 140.0 Pass
                     DV    7025.3826
--------------------------------------------------------------------
4    HKLT -     2    DX   -5188.6582   2.2    -5.9    2.2  46.7 Pass
     IS1             DY   -3762.1990   4.0     7.8    8.5  46.7 Pass
                     DZ    2877.4669   2.5    13.1   13.8 140.0 Pass
                     DV    7025.3918
--------------------------------------------------------------------
5    HKKT -     1    DX     892.5057   2.2     2.9   -0.5  20.8 Pass
     IS1             DY     280.4050   4.0    -5.3    1.2  20.8 Pass
                     DZ     171.9778   2.5    -1.2   -6.0  62.4 Pass
                     DV     951.1938
--------------------------------------------------------------------
6    HKKT -     2    DX     892.5081   2.2     5.3   -5.5  20.8 Pass
     IS1             DY     280.4119   4.0     1.7    0.2  20.8 Pass
                     DZ     171.9789   2.5    -0.1   -0.6  62.4 Pass
                     DV     951.1983
--------------------------------------------------------------------



* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*                                                                 *
*   Final Result - IS1                                            *
*                                                                 *
*   WGS84 (ITRF96) Geodetic Coordinates                           *
*   -----------------------------------                           *
*   Latitude   =  22^ 26' 48.16785" N    Standard Error = 1.6mm   *
*   Longitude  = 114^ 03' 27.13470" E    Standard Error = 1.7mm   *
*   Ell Height = 0.5385m                 Standard Error = 4.6mm   *
*                                                                 *
*   Hong Kong 1980 Grid Coordinates (By Two Step Transformation)  *
*   ------------------------------------------------------------  *
*   Northing = 834146.979m                                        *
*   Easting  = 823983.960m                                        *
*   Height   =      4.072m (for reference only)                   *
*                                                                 *
*   The station 'IS1' is                                          *
*   - fixed by 6 independent GPS baselines          (at least 3)  *
*   - connected to 3 SatRef GPS stations            (at least 2)  *
*   - obtained from 2 observation sessions          (at least 2)  *
*   - computed by following baselines (sessions)                  *
*     ~ HKFN 12  (9.9km)                                          *
*     ~ HKKT 12  (1.0km)                                          *
*     ~ HKLT 12  (7.0km)                                          *
*                                                                 *
*   Computation Accuracy     : 10mm + 3ppm                        *
*   Minimum Session Duration : 15 minutes                         *
*   Minimum Session Lapse    : N.A.                               *
*   Elevation Mask           : 12 degrees                         *
*   Reject GDOP Exceed       : 5                                  *
*                                                                 *
*   This automatic computation result is for reference purpose    *
*   only.  Different survey purposes have different survey        *
*   specifications and requirements.  Lands Department gives no   *
*   guarantee regarding the correctness and completeness of this  *
*   automatic computation and shall not be liable for any loss    *
*   and damages arising from or related to the use of this        *
*   automatic computation result.  Please verify this automatic   *
*   computation result before use.                                *
*                                                                 *
* * 1.08.000632 * * * * * * * * * * * 2012-07-02 18:19:58 (HKT) * *



Remarks: Please click below links to get HTML result and full report.
         The link is valid until 2012-09-02.

Result.htm   FullReport.zip