CN106790058B - A kind of ADS-B message data parsing method and system - Google Patents
A kind of ADS-B message data parsing method and system Download PDFInfo
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- H—ELECTRICITY
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Abstract
The present invention discloses a kind of ADS-B message data parsing method and system, and method is specific as follows: defining multilevel combination expandable structure body first；Then the validity of ADS-B message is parsed；It is parsed followed by the type to ADS-B message；It is parsed followed by the content to ADS-B message.This method being capable of quick, efficient, flexible parsing ADS-B message；Furthermore by carrying out fault-tolerant processing to the ADS-B message structure body being parsed, accuracy, stability and the reliability of the parsing of ADS-B message data can be improved.
Description
Technical field
The present invention relates to air traffic control technical fields, and in particular to a kind of ADS-B message data parsing method and system.
Background technique
Traditional secondary radar is implemented to monitor based on the mode of inquiry response to target, because at high cost, installation difficulty is big, comprehensive
Covering is difficult, has been unable to satisfy the air-transport industry of rapid development.Automatic dependent surveillance broadcast ADS-B is that one kind is defended based on the whole world
Star positioning system and the blank pipe monitoring new technology that traffic monitoring and information transmitting are completed using vacant lot, the communication of absolutely empty data-link, tool
The data characteristics and high Precision information for having high speed to update, can improve the utilization power in airspace.1090MHz ES ADS-B
It is the one mode that International Civil Aviation Organization is uniquely recommended, which need to only do Mode S answering machine and slightly change, can be achieved with
ADS-B message coding.ADS-B system has the features such as at low cost, error is small relative to traditional surveillance technology, in civil aviaton and
Navigation field has boundless application prospect.
ADS-B shares transmission channel by the way of broadcast, rather than the roll-call formula that tradition Mode S is used is inquired, thus
Caused by interfere and increase.In addition, each ADS-B message is made of 112 bit data position information, wrapped in each information
There are many information unit quantity contained, and the not certain rule of bit shared by the information unit in each information can be followed.
Therefore, general analytic method is difficult fast and efficiently to parse ADS-B message.
Summary of the invention
In view of this, it is necessary to provide a kind of ADS-B message data parsings that can fast and efficiently parse ADS-B message
Method and system.
A kind of ADS-B message data analytic method, includes the following steps:
Step 1: defining multilevel combination expandable structure body；Multilevel combination expandable structure body includes ADS-B message
First layer universal architecture body and ADS-B message second layer application specific architecture body, ADS-B message second layer application specific architecture body include multiple
ADS-B message structure body；
Step 2: ADS-B message is converted into the general structure body of ADS-B message first layer, it is logical according to ADS-B message first layer
With the value for representing message format field in structure body, judge whether message is ADS-B message；If so, entering step 3；If not,
Enter step 5；
Step 3: according to the value for representing type of message field in the general structure body of ADS-B message first layer, determining ADS-B message
Type；
Step 4: according to the ADS-B type of message determined in step 3, the ADS-B message being converted into ADS-B message the
Corresponding ADS-B message structure body in two layers of application specific architecture body, and Context resolution is carried out to ADS-B message structure body；
Step 5: terminating.
And a kind of ADS-B message data resolution system, comprising:
Structural body definition unit, for defining multilevel combination expandable structure body；Wherein, the expansible knot of multilevel combination
Structure body includes ADS-B message first layer universal architecture body and ADS-B message second layer application specific architecture body, the ADS-B message second layer
Application specific architecture body includes multiple ADS-B message structure bodies；
Message Effective judgement unit, for ADS-B message to be converted into the general structure body of ADS-B message first layer, and root
According to the value for representing message format field in the general structure body of ADS-B message first layer, judge whether message is ADS-B message；
Type of message determination unit is used for when message Effective judgement unit judges message is effective, according to ADS-B message
The value that type of message field is represented in the general structure body of first layer, determines the type of ADS-B message；
Message content resolution unit, the ADS-B type of message for being determined according to type of message determination unit will be described
ADS-B message is converted into ADS-B message second layer application specific architecture body corresponding ADS-B message structure body, and to ADS-B message
Structural body carries out Context resolution.
A kind of ADS-B message data parsing method and system of the invention, by defining multilevel combination expandable structure
Body parses the validity, type, content of ADS-B message, being capable of quick, efficient, flexible parsing ADS-B message；Together
When, fault-tolerant processing is carried out to the ADS-B message structure body that is parsed, the accuracy, steady of ADS-B message data parsing can be improved
Qualitative and reliability.
Detailed description of the invention
Fig. 1 is the flow chart of ADS-B message data analytic method of the present invention；
Fig. 2 is the structural schematic diagram of multilevel combination expandable structure body；
Fig. 3 is the flow chart of fault-tolerant processing of the invention；
Fig. 4 is the block diagram of ADS-B message data resolution system of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated, it should be understood that and the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
A kind of ADS-B message data analytic method provided by the invention, process is as shown in Figure 1, detailed process is as follows:
Step 1: defining multilevel combination expandable structure body.
The structure of multilevel combination expandable structure body is as shown in Figure 2.Multilevel combination expandable structure body includes ADS-B
Message first layer universal architecture body and ADS-B message second layer application specific architecture body.
Wherein, ADS-B message first layer universal architecture body is a kind of common version structure suitable for all ADS-B messages
Body includes ADS-B message format field and ADS-B type of message field.ADS-B message second layer application specific architecture body is according to various
Various forms of ADS-B message packets define different ADS-B message structural bodies.ADS-B message structure body embodies ADS-
The each single item content of B message packet.In definition structure body, for convenience of parse, by each single item in structural body be defined as 8,
16 or 32.
Step 2: the validity of ADS-B message is parsed.
Specifically, ADS-B message is converted into the general structure body of ADS-B message first layer, it is logical according to ADS-B message first layer
With the value for representing message format field in structure body, judge whether message is ADS-B message.If so, entering step 3.If not,
Enter step 5.
More specifically, the value that message format field DF and CF is represented in the general structure body of ADS-B message first layer is taken out, or
The value of DF, AF judge whether message is ADS-B according to " 1090MHz extends the minimum working performance standard of interrupted oscillation ADS-B "
Message.Wherein, only as DF=17 or 18 and CF=0 or 1, or as DF=19 and AF=0, which is ADS-B report
Text.
Step 3: the type of ADS-B message is parsed.
Specifically, determining that ADS-B is reported according to the value for representing type of message field in the general structure body of ADS-B message first layer
The type of text.
More specifically, the value that type of message field is represented in the general structure body of ADS-B message first layer is taken out, according to
" 1090MHz extend the minimum working performance standard of interrupted oscillation ADS-B ", determine the ADS-B message be air position message or
Air speed message or be other message.
Step 4: the content of ADS-B message is parsed.
Specifically, the ADS-B message is converted into ADS-B report to according to the ADS-B type of message determined in step 3
Corresponding ADS-B message structure body in literary second layer application specific architecture body, and Context resolution is carried out to ADS-B message structure body.Its
In, the mode of Context resolution is carried out to ADS-B message structure body specifically: take out the message needed in ADS-B message structure body
The encoded radio of content, according to " 1090MHz extends the minimum working performance standard of interrupted oscillation ADS-B ", in the message being calculated
The true value of appearance.
Further, fault-tolerant processing is carried out to the ADS-B message structure body being parsed.As shown in figure 3, fault-tolerant processing
Detailed process is as follows:
Step 4.1: the location information in ADS-B message structure body is compared with the location information of ADS-B receiver,
First position threshold value is seen if fall out, if not, entering step 4.2；If so, entering step 4.4.
Step 4.2: the ADS-B message that the location information in ADS-B message structure body was received with same target last time
Location information is compared, and sees if fall out second position threshold value, if not, entering step 4.3；If so, entering step
4.4。
Step 4.3: the location information in ADS-B message structure body is carried out with the location information estimated by 4 D trajectory
Compare, see if fall out the third place threshold value, if not, entering step 5；If so, entering step 4.4.
Step 4.4: abandoning ADS-B message, enter step 5.
Specifically, firstly, the location information of location information and ADS-B receiver in ADS-B message structure body is carried out
Compare, judges whether the difference of longitude or latitude in two location informations exceeds first position threshold value, such as 2 degree.If so,
Then think that the ADS-B information is wrong, abandons the message.Otherwise, then by ADS-B message structure body location information with it is same
The location information for the ADS-B message that target last time receives is compared, and judges the difference of the longitude or latitude in two location informations
Whether value exceeds second position threshold value, such as 0.01 degree.If it is, thinking that the ADS-B information is wrong, the message is abandoned.It is no
Then, then the location information in ADS-B message structure body is compared with the location information estimated by 4 D trajectory, is judged
Whether the difference of longitude or latitude in two location informations exceeds the third place threshold value, such as 0.01 degree.If it is, thinking
The ADS-B information is wrong, abandons the message.Otherwise, ADS-B message structural body is stored or is forwarded.
The ADS-B message structural body being parsed can store in memory, can also be used as interface and is sent to other
Module uses.Wherein, fault-tolerant processing can be extended or modify, and can improve accuracy, the stabilization of the parsing of ADS-B message data
Property and reliability.
Step 5: terminating.
A kind of ADS-B message data analytic method of the present invention, by defining multilevel combination expandable structure body, to ADS-
Validity, type, the content of B message are parsed, being capable of quick, efficient, flexible parsing ADS-B message；Meanwhile to parsing
The ADS-B message structure body of completion carries out fault-tolerant processing, can improve the accuracy of ADS-B message data parsing, stability and can
By property.
The present invention also provides a kind of ADS-B message data resolution systems, as shown in Figure 4, comprising:
Structural body definition unit, for defining multilevel combination expandable structure body.
Wherein, multilevel combination expandable structure body includes ADS-B message first layer universal architecture body and ADS-B message
Two layers of application specific architecture body.ADS-B message first layer universal architecture body is a kind of common version knot suitable for all ADS-B messages
Structure body includes ADS-B message format field and ADS-B type of message field.ADS-B message second layer application specific architecture body is according to each
The various forms of ADS-B message packets of kind, define different ADS-B message structural bodies.ADS-B message structure body embodies
The each single item content of ADS-B message packet.In definition structure body, for convenience of parsing, each single item in structural body is defined as 8
Position, 16 or 32.
Message Effective judgement unit, for ADS-B message to be converted into the general structure body of ADS-B message first layer, and root
According to the value for representing message format field in the general structure body of ADS-B message first layer, judge whether message is ADS-B message.
Specifically, the value that message format field DF and CF is represented in the general structure body of ADS-B message first layer is taken out, or
The value of DF, AF judge whether message is ADS-B according to " 1090MHz extends the minimum working performance standard of interrupted oscillation ADS-B "
Message.Wherein, only as DF=17 or 18 and CF=0 or 1, or as DF=19 and AF=0, which is ADS-B report
Text.
Type of message determination unit is used for when message Effective judgement unit judges message is effective, according to ADS-B message
The value that type of message field is represented in the general structure body of first layer, determines the type of ADS-B message.
Specifically, the value for representing type of message field in the general structure body of ADS-B message first layer is taken out, according to " 1090MHz
Extend the minimum working performance standard of interrupted oscillation ADS-B ", determine that the ADS-B message is air position message or air speed
Message or be other message.
Message content resolution unit, the ADS-B type of message for being determined according to type of message determination unit will be described
ADS-B message is converted into ADS-B message second layer application specific architecture body corresponding ADS-B message structure body, and to ADS-B message
Structural body carries out Context resolution.
Wherein, the mode of Context resolution is carried out to ADS-B message structure body specifically: take out in ADS-B message structure body
The encoded radio of the message content needed is calculated according to " 1090MHz extends the minimum working performance standard of interrupted oscillation ADS-B "
The true value of the message content arrived.
Message fault-tolerant unit, for carrying out fault-tolerant processing to the ADS-B message structure body being parsed.Wherein, message holds
Wrong unit was received according to the location information in ADS-B message structure body with the location information of ADS-B receiver, same target last time
ADS-B message location information, by 4 D trajectory estimate location information relationship, judge whether to abandon the ADS-B
Message.
Specifically, message fault-tolerant unit is first by the position of location information and ADS-B receiver in ADS-B message structure body
Confidence breath is compared, and judges whether the difference of longitude or latitude in two location informations exceeds first position threshold value, such as 2
Degree.If it is, thinking that the ADS-B information is wrong, message fault-tolerant unit abandons the message.Otherwise, message fault-tolerant unit is then
The location information for the ADS-B message that location information and same target last time in ADS-B message structure body receives is compared,
Judge whether the difference of longitude or latitude in two location informations exceeds second position threshold value, such as 0.01 degree.If it is,
Think that the ADS-B information is wrong, message fault-tolerant unit abandons the message.Otherwise, message fault-tolerant unit is then by ADS-B message knot
Location information in structure body is compared with the location information estimated by 4 D trajectory, judges the longitude in two location informations
Or whether the difference of latitude exceeds the third place threshold value, such as 0.01 degree.If it is, think that the ADS-B information is wrong, message
Fault-tolerant unit abandons the message.Otherwise, ADS-B message structural body is stored or is forwarded.
The ADS-B message structural body being parsed can store in memory, can also be used as interface and is sent to other
Module uses.Wherein, the function of message fault-tolerant unit can be extended or modify, and can improve the parsing of ADS-B message data
Accuracy, stability and reliability.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (2)
1. a kind of ADS-B message data analytic method, which comprises the steps of:
Step 1: defining multilevel combination expandable structure body；Multilevel combination expandable structure body includes ADS-B message first
Layer universal architecture body and ADS-B message second layer application specific architecture body, ADS-B message second layer application specific architecture body include multiple ADS-
B message structure body；
Step 2: ADS-B message is converted into ADS-B message first layer universal architecture body, it is general according to ADS-B message first layer
The value that message format field is represented in structural body judges whether message is ADS-B message；If so, entering step 3；If
It is no, enter step 5；
Step 3: according to the value for representing type of message field in ADS-B message first layer universal architecture body, determining ADS-B message
Type；
Step 4: according to the ADS-B type of message determined in step 3, the ADS-B message being converted into the ADS-B message second layer
Corresponding ADS-B message structure body in application specific architecture body, and Context resolution is carried out to ADS-B message structure body；To being parsed
ADS-B message structure body carry out fault-tolerant processing；Detailed process is as follows for fault-tolerant processing:
Step 4.1: the location information in ADS-B message structure body being compared with the location information of ADS-B receiver, is judged
Whether first position threshold value is exceeded, if not, entering step 4.2；If so, entering step 4.4；
Step 4.2: the position for the ADS-B message that the location information in ADS-B message structure body was received with same target last time
Information is compared, and sees if fall out second position threshold value, if not, entering step 4.3；If so, entering step 4.4；
Step 4.3: the location information in ADS-B message structure body is compared with the location information estimated by 4 D trajectory
Compared with the third place threshold value being seen if fall out, if not, entering step 5；If so, entering step 4.4；
Step 4.4: abandoning ADS-B message, enter step 5；
Step 5: terminating.
2. a kind of ADS-B message data resolution system characterized by comprising
Structural body definition unit, for defining multilevel combination expandable structure body；Wherein, multilevel combination expandable structure body
Including ADS-B message first layer universal architecture body and ADS-B message second layer application specific architecture body, the ADS-B message second layer is dedicated
Structural body includes multiple ADS-B message structure bodies；
Message Effective judgement unit, for ADS-B message to be converted into ADS-B message first layer universal architecture body, and according to
The value that message format field is represented in ADS-B message first layer universal architecture body judges whether message is ADS-B message；
Type of message determination unit is used for when message Effective judgement unit judges message is effective, according to ADS-B message first
The value that type of message field is represented in layer universal architecture body, determines the type of ADS-B message；
Message content resolution unit, the ADS-B type of message for being determined according to type of message determination unit, by the ADS-B
Message is converted into ADS-B message second layer application specific architecture body corresponding ADS-B message structure body, and to ADS-B message structure
Body carries out Context resolution；
Message fault-tolerant unit carries out fault-tolerant processing to the ADS-B message structure body being parsed；According to ADS-B message structure body
In the ADS-B message that receives of location information and the location information of ADS-B receiver, same target last time location information, logical
The relationship for crossing the location information of 4 D trajectory estimation, judges whether to abandon the ADS-B message.
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| CN112509383B (en) * | 2020-11-24 | 2022-08-26 | 民航数据通信有限责任公司 | Method for improving accuracy of ADS-B track data |
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