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[gpsd-dev] [RFC 1/3] [AIS] Add UK/ROI AtoN moni toring data message docu
From: |
chgans |
Subject: |
[gpsd-dev] [RFC 1/3] [AIS] Add UK/ROI AtoN moni toring data message documentation |
Date: |
Wed, 23 May 2012 01:03:01 +0100 |
From: Christian Gagneraud <address@hidden>
---
www/AIVDM.txt | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 63 insertions(+), 0 deletions(-)
diff --git a/www/AIVDM.txt b/www/AIVDM.txt
index 2cc5136..6a108ee 100644
--- a/www/AIVDM.txt
+++ b/www/AIVDM.txt
@@ -874,6 +874,8 @@ in use for type 6.
| 1 | 28 | | <<IMO289>> | Standard | Route info addressed
| 1 | 30 | | <<IMO289>> | Standard | Text description addressed
| 1 | 32 | | <<IMO289>> | Standard | Tidal Window
+| 235 | 10 | | <<IALA-A126>> | In use | AIS AtoN monitoring data
(UK)
+| 250 | 10 | | <<IALA-A126>> | In use | AIS AtoN monitoring data
(ROI)
|==============================================================================
DAC/FID pairs are assigned separately per message type.
@@ -1703,6 +1705,62 @@ different bit widths for the latitude and longitude
fields.
The group of fields from longitude on may repeat twice more to convey up to
three points of tidal information.
+==== AtoN monitoring data (GLA) ====
+
+This message provides AtoN (Aid to navigation) monitoring data for the AtoN
administration
+
+A message 6 subtype. DAC = 235 or 250 FID = 10. Fixed length: 136 bits.
+
+DAC and FI are user configurable, DAC=235/FI=10 is used in UK, DAC=250/FI=10
+in the Republic Of Ireland.
+
+The interval between the transmission of these messages will be synchronized
+with message 21, although not necessarily at the same reporting rate. If
+Message 21 is not used at a particular site, then the reporting interval
+should be selected to minimise the power requirement of the transponder,
+whilst still providing enough data to enable meaningful diagnostic analysis.
+
+[frame="topbot",options="header"]
+|==============================================================================
+|Field |Len |Description |Member |T|Units
+|0-5 | 6 |Message Type |type |u|Constant: 6
+|6-7 | 2 |Repeat Indicator |repeat |u|As in Common Navigation Block
+|8-37 | 30 |Source MMSI |mmsi |u|9 decimal digits
+|38-39 | 2 |Sequence Number |seqno |u|Unsigned integer 0-3
+|40-69 | 30 |Destination MMSI |dest_mmsi |u|9 decimal digits
+|70-70 | 1 |Retransmit flag |retransmit |u|0 = no retransmit (default),
+ 1 = retransmitted
+|71-71 | 1 |Spare | |x|Not used
+|72-81 | 10 |DAC |dac |u|DAC = 235 or 250
+|82-87 | 6 |FID |fid |u|FID = 10
+|88-97 | 10 |Analogue |ana_int |u|0.05– 36V 0.05V step
+ Supply voltage to AIS Unit
+ 0 – Not Used
+|98-107 | 10 |Analogue (external #1)|ana_ext1|u|0.05– 36V 0.05V step
+ 0 – Not Used
+|108-117 | 10 |Analogue (external #2)|ana_ext2|u|0.05– 36V 0.05V step
+ 0 – Not Used
+|118-122 | 5 |Status bits (internal)|stat_int|u| / 00 = no RACON
installed
+ 4 \ / 01 = RACON not
monitored
+ 3 / \ 10 = RACON operational
+ \ 11 = RACON ERROR
+ / 00 = no light or no
monitoring
+ 2 \ / 01 = Light ON
+ 1 / \ 10 = Light OFF
+ \ 11 = Light ERROR
+ 0 0 = Good Health, 1 =
Alarm
+|123-130 | 8 |Status bits (external)|stat_ext|u|7 Digital Input 0=Off, 1=On
+ :
+ :
+ 0 Digital Input 0=Off, 1=On
+|131-131 | 1 |Off position status |off_position|b|0 = On position, 1 = Off
position
+|132-135 | 4 |Spare | |x|Not used
+|==============================================================================
+
+The internal status bits are the same as the 5 LSBs of status bits from
+Message type 21.
+
+
=== Type 7: Binary Acknowledge ===
Message type 7 is a receipt acknowledgement to the senders of a
@@ -4384,6 +4442,11 @@ Identification System]
289: Guidance on the Use of AIS Application-Specific Messages
(June 2010)]
+- [[IALA-A126]]
+ http://www.ialathree.org/chapo/publications/documentspdf/doc_235_eng.pdf[IALA
+ Recommendation A-126 On The Use of the Automatic Identification System (AIS)
+ in Marine Aids to Navigation Services
+
- [[[Schwehr]]] http://schwehr.org/blog/[Kurt Schwehr's weblog]
- [[[IEC-PAS]]] IEC-PAS 61162-100, "Maritime navigation and
--
1.7.7