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

Applicant: Tai Man CHAN <ChanTai-man@hotmail.com>
                        <Tai Man CHAN/SMO/LANDSD/HKSARG>

Request: 2012-06-28 07:54:56 (HKT)
Process: 2012-06-28 07:57:05 (HKT)

New Station Name: KL2

Computation Accuracy: 10mm + 3ppm

Upload files: 1. KL2_AM0-1.12o    916Kb
              2. KL2_AM0-2.12o    833Kb


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


Observation Session
-----------------------------------------------------------------
Sess     Start(HKT)         End(HKT)      Duration      Lapse
-----------------------------------------------------------------
1    2012-05-03 11:41  2012-05-03 12:10  00:28(Pass)
2    2012-05-03 12:40  2012-05-03 13:08  00:28(Pass)  00:30(Pass)
-----------------------------------------------------------------




Checking Origin - Misclosure Summary
--------------------------------------------------------------------
Session   Origin      Length   Latitude   Longitude   Allowable
--------------------------------------------------------------------
1       HKFN - HKKT    9.2km     21.0mm     37.7mm      58.7mm  Pass
        HKFN - HKLT   16.9        6.9        9.6        60.0    Pass
        HKKT - HKLT    7.8       23.0        5.6        50.8    Pass
--------------------------------------------------------------------

2       HKFN - HKKT    9.2km     33.0mm     16.3mm      58.7mm  Pass
        HKFN - HKLT   16.9       10.2       15.3        60.0    Pass
        HKKT - HKLT    7.8       20.7       14.9        50.8    Pass
--------------------------------------------------------------------


Baseline Ambiguity Status and Quality
--------------------------------------------------------------------
No. From  To     Sess  Dist  GDOP 3DQly  Fix  IonoAct Frequency
--------------------------------------------------------------------
1   HKFN  KL2       1   5.6   3.9   1.4  Yes  Auto    L1 + L2
2   HKKT  KL2       1   5.6   3.9   2.0  Yes  Auto    L1 + L2
3   HKLT  KL2       1  12.2   3.9  37.4  No   Medium  Iono Free (L3) ***
--------------------------------------------------------------------
4   HKFN  KL2       2   5.6   4.0   1.5  Yes  Auto    L1 + L2
5   HKKT  KL2       2   5.6   4.0   3.1  Yes  Auto    L1 + L2
6   HKLT  KL2       2  12.2   4.0   2.5  Yes  Auto    L1 + L2
--------------------------------------------------------------------



Repeated Baseline Summary
--------------------------------------------------------------------
Sess  GDOP    Delta Lat    Delta Long   Delta Ht  Remarks
--------------------------------------------------------------------
HKFN - KL2
1     3.9   -0'05.15344"  -3'15.38894"  -33.8539
2     4.0   -0'05.15419"  -3'15.38912"  -33.8630
--------------------------------------------------------------------
   Spread:       22.5mm         5.4mm             2 Baselines
Allowable:       55.2mm        55.2mm             L=5.587km

--------------------------------------------------------------------
HKKT - KL2
1     3.9    2'54.05372"   1'02.38135"  -27.2324
2     4.0    2'54.05292"   1'02.38181"  -27.2709
--------------------------------------------------------------------
   Spread:       24.0mm        13.8mm             2 Baselines
Allowable:       55.6mm        55.6mm             L=5.643km

--------------------------------------------------------------------
HKLT - KL2
2     4.0    4'30.43509"   5'14.17032" -118.3775  ???
--------------------------------------------------------------------




Least Squares Network Adjustment - Residuals Report (Trial) [Show]

Least Squares Network Adjustment - Residuals Report (Final)
--------------------------------------------------------------------
Baseline     Session        Input   Std Err  --Residual--  Allowable
                             (m)      (mm)     XYZ    ENH     ENH
--------------------------------------------------------------------
1    HKLT -     2    DX   -6864.4883  18.0   -14.8  -52.5  60.0 Pass
     KL2             DY   -6661.1214  32.9   162.4   48.6  60.0 Pass
                     DZ    7642.7248  19.3   116.2  187.0
                     DV   12243.4873
--------------------------------------------------------------------
2    HKKT -     1    DX    -783.2845  18.0    33.9  -22.3  39.3 Pass
     KL2             DY   -2618.6880  32.9   -21.3  -23.9  39.3 Pass
                     DZ    4937.0942  19.3   -39.6  -45.8
                     DV    5643.2225
--------------------------------------------------------------------
3    HKFN -     1    DX    5085.6751  18.0    -9.8   18.8  39.0 Pass
     KL2             DY    2308.2848  32.9   -24.2   12.5  39.0 Pass
                     DZ    -159.4135  19.3     6.1  -14.4
                     DV    5587.2787
--------------------------------------------------------------------
4    HKFN -     2    DX    5085.6797  18.0    -5.3   13.6  39.0 Pass
     KL2             DY    2308.2873  32.9   -21.7  -10.6  39.0 Pass
                     DZ    -159.4382  19.3   -18.7  -23.4
                     DV    5587.2845
--------------------------------------------------------------------



* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*                                                                 *
*   Final Result - KL2                                            *
*                                                                 *
*   WGS84 (ITRF96) Geodetic Coordinates                           *
*   -----------------------------------                           *
*   Latitude   =  22^ 29' 35.71623" N    Standard Error = 14.1mm  *
*   Longitude  = 114^ 05' 02.01649" E    Standard Error = 13.3mm  *
*   Ell Height = 7.3705m                 Standard Error = 37.5mm  *
*                                                                 *
*   Hong Kong 1980 Grid Coordinates (By Two Step Transformation)  *
*   ------------------------------------------------------------  *
*   Northing = 839298.887m                                        *
*   Easting  = 826700.138m                                        *
*   Height   =     10.901m (for reference only)                   *
*                                                                 *
*   The station 'KL2' is                                          *
*   - fixed by 4 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  (5.6km)                                          *
*     ~ HKKT 1-  (5.6km)                                          *
*     ~ HKLT -2 (12.2km)                                          *
*                                                                 *
*   Computation Accuracy     : 10mm + 3ppm                        *
*   Minimum Session Duration : 15 minutes                         *
*   Minimum Session Lapse    : 30 minutes                         *
*   Elevation Mask           : 15 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 * * * * * * * * * * * 2012-06-28 08:00:22 (HKT) * *



Remarks: Please click below links to get HTML result and full report.
         The link is valid until 2012-08-28.

Result.htm   FullReport.zip