📄 gps nmea 0183数据格式.mht
字号:
the difference between the WGS-84 earth<br>
<br>
ellipsoid and mean-sea-level =
;(<span
class=3DSpellE>geoid</span>), "-" means mean-sea=
-level<br>
<br>
below ellipsoid<br>
<br>
12) Units of <span class=3DSpellE>geoidal</span>&nbs=
p;separation, meters<br>
<br>
13) Age of differential GPS data, tim=
e in seconds since last SC104<br>
<br>
type 1 or 9 update,&nbs=
p;null field when DGPS is not used<br>
<br>
14) Differential reference station ID, 000=
0-1023<br>
<br>
15) Checksum<br>
<br>
<br>
<br>
GLC - Geographic Position, Loran-C<br>
<br>
&=
nbsp; &nbs=
p; &=
nbsp; 12 14<br>
<br>
1 =
2 3 4 5 6 7&nb=
sp;8 9 10 11| 13|<br>
<br>
| =
| | | | | |&nb=
sp;| | | | | |=
|<br>
<br>
$--<span class=3DSpellE>GLC,xxxx,x.x,a,x.x,a,x.x,a.x,x,a,x.x,a,x.x,=
a</span>*<span
class=3DSpellE>hh</span><CR><LF><br>
<br>
<br>
<br>
Field Number: <br>
<br>
1) GRI Microseconds/10<br>
<br>
2) Master TOA Microseconds<br>
<br>
3) Master TOA Signal Status<br>
<br>
4) Time Difference 1 Microseconds<br>
<br>
5) Time Difference 1 Signal Status<b=
r>
<br>
6) Time Difference 2 Microseconds<br>
<br>
7) Time Difference 2 Signal Status<b=
r>
<br>
8) Time Difference 3 Microseconds<br>
<br>
9) Time Difference 3 Signal Status<b=
r>
<br>
10) Time Difference 4 Microseconds<br>
<br>
11) Time Difference 4 Signal Status<br>
<br>
12) Time Difference 5 Microseconds<br>
<br>
13) Time Difference 5 Signal Status<br>
<br>
14) Checksum<br>
<br>
<br>
<br>
GLL - Geographic Position - Latitude/Longi=
tude<br>
<br>
<br>
<br>
1 2 3 &nbs=
p; 4 5  =
; 6 7<br>
<br>
| | | &nbs=
p; | |  =
; | |<br>
<br>
$--<span class=3DSpellE>GLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,A</span>=
*<span
class=3DSpellE>hh</span><CR><LF><br>
<br>
<br>
<br>
Field Number: <br>
<br>
1) Latitude<br>
<br>
2) N or S (North or South)<br>
<br>
3) Longitude<br>
<br>
4) E or W (East or West)<br>
<br>
5) Universal Time Coordinated (UTC)<br>
<br>
6) Status A - Data Valid, V&nbs=
p;- Data Invalid<br>
<br>
7) Checksum<br>
<br>
<br>
<br>
GSA - GPS DOP and active satellites<b=
r>
<br>
<br>
<br>
1 2 3 &nbs=
p; &=
nbsp; 14 15 16 17 18<br>
<br>
| | | &nbs=
p; &=
nbsp; | | | | =
|<br>
<br>
$--<span class=3DSpellE>GSA,a,a,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x.x,x.x=
,x.x</span>*<span
class=3DSpellE>hh</span><CR><LF><br>
<br>
<br>
<br>
Field Number: <br>
<br>
1) Selection mode<br>
<br>
2) Mode<br>
<br>
3) ID of 1st satellite used for=
fix<br>
<br>
4) ID of 2nd satellite used for=
fix<br>
<br>
...<br>
<br>
14) ID of 12th satellite used f=
or fix<br>
<br>
15) PDOP in meters<br>
<br>
16) HDOP in meters<br>
<br>
17) VDOP in meters<br>
<br>
18) checksum<br>
<br>
<br>
<br>
GSV - Satellites in view<br>
<br>
<br>
<br>
1 2 3 4 5 6 7 =
n<br>
<br>
| | | | | | | =
|<br>
<br>
$--<span class=3DSpellE>GSV,x,x,x,x,x,x,x</span>,...*<span class=3D=
SpellE>hh</span><CR><LF><br>
<br>
<br>
<br>
Field Number: <br>
<br>
1) total number of messages<br>
<br>
2) message number<br>
<br>
3) satellites in view<br>
<br>
4) satellite number<br>
<br>
5) elevation in degrees<br>
<br>
6) azimuth in degrees to true<br>
<br>
7) SNR in dB<br>
<br>
more satellite <span class=3DSpellE>infos</span>&nb=
sp;like 4)-7)<br>
<br>
n) checksum<br>
<br>
<br>
<br>
GTD - Geographic Location in Time Dif=
ferences<br>
<br>
<br>
<br>
1 2 3 4 &nb=
sp; 5 6<br>
<br>
| | | | &nb=
sp; | |<br>
<br>
$--<span class=3DSpellE>GTD,x.x,x.x,x.x,x.x,x.x</span>*<span
class=3DSpellE>hh</span><CR><LF><br>
<br>
<br>
<br>
Field Number: <br>
<br>
1) time difference<br>
<br>
2) time difference<br>
<br>
3) time difference<br>
<br>
4) time difference<br>
<br>
5) time difference<br>
<br>
n) checksum<br>
<br>
<br>
<br>
GXA - TRANSIT Position - Latitude/Longitud=
e<br>
<br>
Location and time of TRANSIT fix at&n=
bsp;waypoint<br>
<br>
<br>
<br>
1 =
2 3&=
nbsp;4 5 6 &=
nbsp; 7 8<br>
<br>
| =
| |&=
nbsp;| | | &=
nbsp; | |<br>
<br>
$--<span class=3DSpellE>GXA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c</span>=
--<span
class=3DSpellE>c,X</span>*<span class=3DSpellE>hh</span><CR><LF&=
gt;<br>
<br>
<br>
<br>
Field Number: <br>
<br>
1) UTC of position fix<br>
<br>
2) Latitude<br>
<br>
3) East or West<br>
<br>
4) Longitude<br>
<br>
5) North or South<br>
<br>
6) Waypoint ID<br>
<br>
7) <span class=3DSpellE>Satelite</span> number<br>
<br>
8) Checksum<br>
<br>
<br>
<br>
HDG - Heading - Deviation & Varia=
tion<br>
<br>
<br>
<br>
1 2 =
; 3 4 5 6<br>
<br>
| | =
; | | | |<br>
<br>
$--<span class=3DSpellE>HDG,x.x,x.x,a,x.x,a</span>*<span class=3DSp=
ellE>hh</span><CR><LF><br>
<br>
<br>
<br>
Field Number: <br>
<br>
1) Magnetic Sensor heading in degree=
s<br>
<br>
2) Magnetic Deviation, degrees<br>
<br>
3) Magnetic Deviation direction, E =
=3D Easterly, W =3D Westerly<br>
<br>
4) Magnetic Variation degrees<br>
<br>
5) Magnetic Variation direction, E =
=3D Easterly, W =3D Westerly<br>
<br>
6) Checksum<br>
<br>
<br>
<br>
HDM - Heading - Magnetic<br>
<br>
<br>
<br>
1 2 =
;3<br>
<br>
| | =
;|<br>
<br>
$--<span class=3DSpellE>HDM,x.x,M</span>*<span class=3DSpellE>hh</s=
pan><CR><LF><br>
<br>
<br>
<br>
Field Number: <br>
<br>
1) Heading Degrees, magnetic<br>
<br>
2) M =3D magnetic<br>
<br>
3) Checksum<br>
<br>
<br>
<br>
HDT - Heading - True<br>
<br>
<br>
<br>
1 2 =
;3<br>
<br>
| | =
;|<br>
<br>
$--<span class=3DSpellE>HDT,x.x,T</span>*<span class=3DSpellE>hh</s=
pan><CR><LF><br>
<br>
<br>
<br>
Field Number: <br>
<br>
1) Heading Degrees, true<br>
<br>
2) T =3D True<br>
<br>
3) Checksum<br>
<br>
<br>
<br>
HSC - Heading Steering Command<br>
<br>
<br>
<br>
1 2 =
;3 4 5<br>
<br>
| | =
;| | |<br>
<br>
$--<span class=3DSpellE>HSC,x.x,T,x.x,M</span>,*<span class=3DSpell=
E>hh</span><CR><LF><br>
<br>
<br>
<br>
Field Number: <br>
<br>
1) Heading Degrees, True<br>
<br>
2) T =3D True<br>
<br>
3) Heading Degrees, Magnetic<br>
<br>
4) M =3D Magnetic<br>
<br>
5) Checksum<br>
<br>
<br>
<br>
LCD - Loran-C Signal Data<br>
<br>
<br>
<br>
1 =
2 3 4 5  =
;6 7 &nbs
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