Struct NmeaAisPositionReportClassBParser

Enables fields to be extracted from an AIS Standard Class B CS Position Report payload in an NMEA sentence.

Namespace: Ais.Net
Assembly: Ais.Net.dll
Syntax
public struct NmeaAisPositionReportClassBParser

Constructors

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NmeaAisPositionReportClassBParser(ReadOnlySpan<Byte>, UInt32)

Create an NmeaAisPositionReportClassBParser.

Declaration
public NmeaAisPositionReportClassBParser(ReadOnlySpan<byte> ascii, uint padding)
Parameters
Type Name Description
ReadOnlySpan<System.Byte> ascii

The ASCII-encoded message payload.
System.UInt32 padding

The number of bits of padding in this payload.

Properties

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CanAcceptMessage22ChannelAssignment

Gets a value indicating whether the unit can accept channel assignments via Message Type 22.

Declaration
public bool CanAcceptMessage22ChannelAssignment { get; }
Property Value
Type Description
System.Boolean
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CanSwitchBands

Gets a value indicating whether base stations can command this unit to switch frequency.

Declaration
public bool CanSwitchBands { get; }
Property Value
Type Description
System.Boolean
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CourseOverGround10thDegrees

Gets the vessel's course over ground in units of one tenth of a degree.

Declaration
public uint CourseOverGround10thDegrees { get; }
Property Value
Type Description
System.UInt32
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CsUnit

Gets the value indicating whether this is a Class B (using CSTDMA) unit, or a Class B+ (using SOTDMA) unit.

Declaration
public ClassBUnit CsUnit { get; }
Property Value
Type Description
ClassBUnit
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HasDisplay

Gets a value indicating whether the unit has a visual display attached.

Declaration
public bool HasDisplay { get; }
Property Value
Type Description
System.Boolean
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IsAssigned

Gets a value indicating whether the unit is running in assigned mode. If false, the unit is in autonomous mode.

Declaration
public bool IsAssigned { get; }
Property Value
Type Description
System.Boolean
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IsDscAttached

Gets a value indicating whether the unit is attached to a VHF voice radio with DSC capability.

Declaration
public bool IsDscAttached { get; }
Property Value
Type Description
System.Boolean
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Latitude10000thMins

Gets the reported latitude, in units of 1/10000 arc minutes.

Declaration
public int Latitude10000thMins { get; }
Property Value
Type Description
System.Int32
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Longitude10000thMins

Gets the reported longitude, in units of 1/10000 arc minutes.

Declaration
public int Longitude10000thMins { get; }
Property Value
Type Description
System.Int32
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MessageType

Gets the message type.

Declaration
public uint MessageType { get; }
Property Value
Type Description
System.UInt32
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Mmsi

Gets the unique identifier assigned to the transponder that sent this message.

Declaration
public uint Mmsi { get; }
Property Value
Type Description
System.UInt32
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PositionAccuracy

Gets a value indicating whether the position information is of DGPS quality.

Declaration
public bool PositionAccuracy { get; }
Property Value
Type Description
System.Boolean
Remarks

If true, location information is DGPS-quality (less than 10m). If false, it is of unaugmented GNSS accuracy.

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RadioStatusType

Gets a value indicating whether the radio status is in SOTDMA or ITDMA format.

Declaration
public ClassBRadioStatusType RadioStatusType { get; }
Property Value
Type Description
ClassBRadioStatusType
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RaimFlag

Gets a value indicating whether Receiver Autonomous Integrity Monitoring is in use.

Declaration
public bool RaimFlag { get; }
Property Value
Type Description
System.Boolean
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RegionalReserved139

Gets the 2 bits of 'regional reserved' data starting at bit 38.

Declaration
public byte RegionalReserved139 { get; }
Property Value
Type Description
System.Byte
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RegionalReserved38

Gets the 8 bits of 'regional reserved' data starting at bit 38.

Declaration
public byte RegionalReserved38 { get; }
Property Value
Type Description
System.Byte
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RepeatIndicator

Gets the number of times this message had been repeated on this broadcast.

Declaration
public uint RepeatIndicator { get; }
Property Value
Type Description
System.UInt32
Remarks

When stations retransmit messages with a view to enabling them to get around hills and other obstacles, this should be incremented. When it reaches 3, no more attempts should be made to retransmit it.

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SpeedOverGroundTenths

Gets the vessel's speed over ground, in tenths of a knot.

Declaration
public uint SpeedOverGroundTenths { get; }
Property Value
Type Description
System.UInt32
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TimeStampSecond

Gets the seconds part of the (UTC) time at which the location was recorded.

Declaration
public uint TimeStampSecond { get; }
Property Value
Type Description
System.UInt32
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TrueHeadingDegrees

Gets the vessel's heading in degrees.

Declaration
public uint TrueHeadingDegrees { get; }
Property Value
Type Description
System.UInt32