[teqc] Leica Navigation Messages

Henry Hu z3106908 at student.unsw.edu.au
Tue Jul 26 22:11:06 MDT 2005


Hi Lou,

We processed raw data from one Trimble 4000SSE receiver (using TEQC) and one Leica MC500 receiver (using Leica Geo Office) and found there is difference in the Navigation file. Below is a sample section.

=== Leica Data ===
19 05 07 26 22 00  0.0-2.455757930875D-05-4.547473508865D-13 0.000000000000D+00
    8.600000000000D+01 5.431250000000D+01 4.455542601534D-09 9.839382338912D-01
    2.756714820862D-06 3.425075556152D-03 9.367242455482D-06 5.153715379715D+03
    2.520000000000D+05-2.235174179077D-08-1.453271533084D+00-7.078051567078D-08
    9.585451900661D-01 2.017500000000D+02-1.585713739022D+00-8.062121636954D-09
   -1.464346699454D-11 1.000000000000D+00 1.333000000000D+03 0.000000000000D+00
    0.000000000000D+00 0.000000000000D+00-1.443549990654D-08 3.420000000000D+02
    2.520000000000D+05 0.000000000000D+00

=== Trimble Data ===
19 05  7 26 22  0  0.0-2.455757930875D-05-4.547473508865D-13 0.000000000000D+00
    8.600000000000D+01 5.431250000000D+01 4.455542734096D-09 9.839382338912D-01
    2.756714820862D-06 3.425075556152D-03 9.367242455482D-06 5.153715379715D+03
    2.520000000000D+05-2.235174179077D-08-1.453271533084D+00-7.078051567078D-08
    9.585451900661D-01 2.017500000000D+02-1.585713739022D+00-8.062121534008D-09
   -1.464346710204D-11 1.000000000000D+00 1.333000000000D+03 0.000000000000D+00
    2.000000000000D+00 0.000000000000D+00-1.443549990654D-08 3.420000000000D+02
    2.448000000000D+05 4.000000000000D+00

You can see that the difference with IDOT and Delta N values. The two receivers are very close.  Do you know the reason for this problem? 

Thank you very much.

Best regards, 
  
----------------------------------------------------
Henry You-Heng Hu, PhD Student 
School of Surveying & Spatial Information Systems
The University of New South Wales
Sydney NSW 2052, AUSTRALIA
Tel:   +61-2-9385 4185 (Int.)
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Email: you-heng.hu at student.unsw.edu.au
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