Saab R5 - HDT Heading True Sentence; OSD Own Ship Data Sentence; RMC Recommended Minimum GNSS Data Sentence

R5 SOLID AIS System
INTERPRETATION OF INPUT SENTENCES
7000 118-200, C2 Page 67
9
x.x
HDOP
Ignored
10
x.x
Antenna altitude, meter
Ignored
11
x.x
Geodial separation
Ignored
12
x.x
Age of differential
corrections
Ignored
13
x.x
Differential reference
station ID
Ignored
8.1.6 HDT - Heading, True
The use of this sentence is talker identifier dependent.
$--HDT,x.x,T
Field
Format
Name
Comment
1
--HDG
Sentence Id
Used
2
x.x
Heading, degrees true
Used
3
T
NOTE: HDT input must be sent at least every 3 seconds for
the R5 SOLID to calculate ROT from the HDT input.
8.1.7 OSD – Own ship data
$--OSD,x.x,A,x.x,a,x.x,a,x.x,x.x,a
Field
Format
Name
Comment
1
--OSD
Sentence Id
Used
2
x.x
Heading, degrees true
Used if heading status is ‘A’
3
A
Heading status
Used
4
x.x
Vessel course, degrees true
Used as COG
5
a
Course reference
Used
1
6
x.x
Vessel speed
Used as SOG
7
a
Speed reference
Used
1
8
x.x
Vessel set
Ignored
9
x.x
Vessel drift
Ignored
10
a
Speed units
Used to convert SOG to knots
8.1.8 RMC – Recommended minimum specific GNSS data
$--RMC,hhmmss.ss,A,llll.ll,a,yyyy.yy,a,x.x,x.x,xxxxxx,x.x,a,a
Field
Format
Name
Comment
1
--RMC
Sentence Id
Used
2
hhmmss.
ss
UTC of position
UTC Second is used to indicate
Time Stamp
3
A
Status
Used
4
llll.ll
Latitude
Used
5
a
6
yyyy.yy
Longitude
Used
7
a
8
x.x
Speed over ground, knots
Used
9
x.x
Course over ground, degrees
true
Used
10
xxxxxx
Date
Ignored
11
x.x
Magnetic variation
Ignored
12
a
13
a
Mode indicator
NULL -> Message is ignored
A -> Position with low accuracy
D -> Position with high
accuracy
E -> Dead Reckoning Mode with
Low accuracy
M -> Manual Mode with low
accuracy
OTHER -> No Position
1
SOG and COG are used if both COG reference and SOG reference are set to either: B, P, R