Reference Information
LD900 Installation and Oper ations M anual
78
6.4.13 VERIPOS UKOOA Sentence
The VERIPOS UKOOA sentence is compliant with
OGP 373-19
and
IMCA S015 (July 2011)
. For further
inf ormation relating to these standards please visit
.
VERIPOS UKOOA Sentence Structure & Example
[ 212 OEM7VERI 1 2097 228977.0 +0.1 +20.0 57 12.082074N 002 11.537819W 64.045 +50.40 1.296 0.750
1.057 7 0.097 0.891 0.06 0.007 +0.001 0.006 0.027 0.22 0.18 031.9 P 11{31 29 26 04 25 21 16 05 12 14 02}
1{0068}]
VERIPOS UKOOA Sentence Defined
Field
Content
Notes
1
Start Character
Open string
2
…5
Length of Message
Number of characters
6…10
Software Version
11
…16
System Name
17
…18
Record Identifier
Shows the calculation used, as different calculations can be labelled: 1, 2, 3 etc
19
…23
GPS Week Number
Since Jan 6
th
1980
24
…32
GPS Time of Fix
Seconds into current GPS Week
33
…37
Age of Record
Time (in seconds) of the first character of the data string being output, minus the
time of position.
38
…43
Latency
Latency in seconds
44
…56
Latitude
Latitude displayed with spaces, d d mm.mmmmm
’
57
Latitude Hemisphere
Indicator
N or S
58
…71
Longitude
Longitude displayed with spaces, dd mm.mmmmm’
72
Longitude Hemisphere
Indicator
E or W
73
…79
Altitude above MSL
Antenna height (in metres) above mean sea level (datum for height calculations)
80
…87
Geoid Separation
Separation between mean sea level and the WGS84 reference ellipsoid (in
metres), based on a Geoid model as for example EGM96.
88
…94
PDOP
3D (Position) Dilution of Position
95
…101
HDOP
Horizontal Dilution of Position
102
…108 VDOP
Vertical Dilution of Position
109
…110 Fix Status
Single Frequency
Dual frequency
0 = None or Bad Fixes
4 = None or Bad Fixes
1 = Altitude Aiding (weighted height)
5 = Altitude Aiding (weighted height)
2 = Altitude hold (2D Fix)
6 = Altitude hold (2D Fix)
3 = 3D Fix
7 = 3D Fix
111
…117 Internal Reliability
Smallest outlier (in metres) that is likely to be detected by the current solution.
118
…125 External Reliability
Maximum positional effect (in metres) of an undetectable error in an
observation. This quantity is related to the Power of the test (probability that the
MDE would be detected) and the Significance level used.
126
…130 Unit Variance
The Variance and Covariance terms are elements from the variance-covariance
matrix of the position fix computation (un -scaled) in metres².