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| author | Eric S. Raymond <esr@thyrsus.com> | 2011-05-06 04:10:21 -0400 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2011-05-06 04:10:21 -0400 |
| commit | 6f4e36284eaec41881b752fe5d8d6ae6f9784e8c (patch) | |
| tree | 03e52482b2fd907b5abea58c821d648caf734ea6 | |
| parent | a358a0a89d97e03504dcfb630a74c52b446667dd (diff) | |
| download | gpsd-6f4e36284eaec41881b752fe5d8d6ae6f9784e8c.tar.gz | |
More detail on Area Notice.
| -rw-r--r-- | www/AIVDM.txt | 46 |
1 files changed, 39 insertions, 7 deletions
diff --git a/www/AIVDM.txt b/www/AIVDM.txt index 6e49a749..17b8caaf 100644 --- a/www/AIVDM.txt +++ b/www/AIVDM.txt @@ -1090,12 +1090,12 @@ is the message header format: |72-81 | 10 |DAC |dac |u|DAC = 001 |82-87 | 6 |FID |fid |u|FID = 18 |88-97 | 10 |Message Linkage ID |linkage |u|Unsigned integer -|333-333 | 7 |Notice Description |notice |u|See table below -|98-101 | 4 |Month (UTC) |month |u|1-12; 0 = N/A (default) -|102-106 | 5 |Day (UTC) |day |u|1-31; 0 = N/A (default) -|107-111 | 5 |Hour (UTC) |hour |u|0-23; 24 = N/A (default) -|112-117 | 6 |Minute (UTC) |minute |u|0-59; 60 = N/A (default) -|333-333 | 18 |Duration |duration |In minutes, +|98-104 | 7 |Notice Description |notice |u|See table below +|105-108 | 4 |Month (UTC) |month |u|1-12; 0 = N/A (default) +|109-113 | 5 |Day (UTC) |day |u|1-31; 0 = N/A (default) +|114-118 | 5 |Hour (UTC) |hour |u|0-23; 24 = N/A (default) +|119-124 | 6 |Minute (UTC) |minute |u|0-59; 60 = N/A (default) +|125-142 | 18 |Duration |duration |In minutes, 262143 = N/A (default), 0 = cancel this notice. |============================================================================== @@ -1238,7 +1238,39 @@ Notice description types are as follows: |127| Undefined (default) |============================================================================== -// Still missing: the subarea types +Subarea types are as follows: + +[frame="topbot",options="header"] +|============================================================================== +| 0 | Circle or point +| 1 | Rectangle +| 2 | Sector +| 3 | Polyline +| 4 | Polygon +| 5 | Associated text +| 6-7 | Reserved +|============================================================================== + +.Circle or Point +[frame="topbot",options="header"] +|============================================================================== +|Field |Len |Description |Member/Type |T|Units +|0-2 | 3 |Shape of area |shape |u|Constant: 0 +|3-4 | 2 |Scale factor |scale |u|Exponent for area dimensions + 1 = meters (default) +|5-29 | 25 |Longitude |lon |I3|Longitude of center point, + Unit = minutes * 0.0001, + 181000 = N/A (default). +|30-53 | 24 |Latitude |lat |I3|Latitude of center point, + Unit = minutes * 0.0001, + 91000 = N/A (default). +|54-56 | 3 |Precision |precision |u|Decimal places of precision + (defaults to 4) +|57-68 | 12 |Radius |radius |u|Radius of area + 0 = point (default, + else 1-4095 * 10^scale +|69-86 | 18 |Spare | |x|Not used +|============================================================================== ==== IMO 289 Berthing Data (addressed) ==== |