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D

Logs summary

216

 MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1

When combined with a RGEA/B/D log, this data set contains all of the decoded satellite information necessary to
compute the solution: satellite coordinates (

ECEF

 

WGS84

), satellite clock correction, ionospheric corrections (from

broadcast model), tropospheric corrections (Hopfield model), decoded differential correction used and range
weight standard deviation. The corrections are to be added to the pseudoranges. Only those satellites that are
healthy are reported here. Also see Figure D-2, Page 185.

$SVDA,766,143860.00,-4.062,7,
20,-15044774.225,-9666598.520,19499537.398,6676.013,-1.657,-2.662,16.975,0.674
5,-10683387.874,-21566845.644,11221810.349,18322.228,-1.747,-2.819,-8.864,0.790,
6,-20659074.698,-28381.667,16897664619,57962.693,-2.543,4.401,-37.490,1.203,
16,142876.148,-26411452.927,2795075.561,-22644.136,-2.733,-4.904,7.701,1.259,
24,-852160.876,-16138149.057,21257323.813,229594.682,-1.545,-2.451,32.178,0.420,
25,-12349609.643,11102877.199,20644151.935,-4313.339,-3.584,-8.579,
-42.813,1.370,
..,
4,14209626.440,-9259502.647,20544348.215,12811.399,-2.675,-4.741,-10.778,1.239
*23[CR][LF]

$SVDA

week

seconds

rec clk err

# obs

prn

x

y

z

clk corr

ion corr

trop corr

diff corr

rng std

:

prn

x

y

z

clk corr

ion corr

trop corr

diff corr

rng std

*xx

[CR][LF]

1

$SVDA

Log header

$SVDA

2

week

GPS week number

766

3

seconds

GPS seconds into the week (receiver time, not corrected for clock 
error, CLOCKADJUST enabled)

143860.00

4

rec clk err

Solved receiver clock error (metres)

-4.062

5

# obs

Number of satellite observations to follow

7

6

prn

Satellite PRN number (1-32)

20

7

x

Satellite x coordinate (metres)

-15044774.225

8

y

Satellite y coordinate (metres)

-9666598.520

9

z

Satellite z coordinate (metres)

19499537.398

10

clk corr

Satellite clock correction (metres)

6676.013

11

ion corr

Ionospheric correction (metres)

-1.657

12

trop corr

Tropospheric correction (metres)

-2.662

13

diff corr

Decoded differential correction used (metres)

16.975

14

rng std

Range weight standard deviation (metres)

0.674

...
...
...

...
...
...

Next PRN number, x, y, z, clk corr, ion corr, trop corr, diff corr, mg std
...
Last PRN number, x, y, z, clk corr, ion corr, trop corr, diff corr, mg std

variable

*xx

Checksum

*23

variable

[CR][LF]

Sentence terminator

[CR][LF]