CN114488204A - Beidou RDSS content-based state anomaly monitoring method and system and storage medium - Google Patents
Beidou RDSS content-based state anomaly monitoring method and system and storage medium Download PDFInfo
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- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
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- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
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Abstract
The invention discloses a Beidou RDSS content-based state anomaly monitoring method, a Beidou RDSS content-based state anomaly monitoring system and a computer-readable storage medium. The comparison of the conditional communication types requires that after the address of a receiver of each outbound message is analyzed, the communication type of the outbound message is deduced for the first time according to the address type of the receiver address, then after the information type is analyzed, the communication type of the outbound message is deduced for the second time according to the information type of the outbound message, and if the results of the two communication types are consistent, the conditions are passed. The RDSS communication is more reasonable and standard, and the communication success rate and the communication reliability are obviously optimized.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a Beidou RDSS content-based state anomaly monitoring method and system.
Background
With the improvement and popularization of the function of the Beidou third RDSS system, the communication service volume borne by the RDSS satellite increases day by day, and the requirements on the RDSS communication stability and the success rate of the receiver are higher and higher. In practical application, because signals are unstable in some scenes and error codes exist, RDSS communication is often unstable, and success rate is greatly reduced. Therefore, corresponding protection needs to be added for the abnormal state of the RDSS communication content.
Firstly, address types supported by different outbound information types are different, and mismatching of the message type and the outbound address type easily causes confusion of users and false information reception. Secondly, most of the content items of the RDSS communication have range limitation, and once some content items exceed the range, the communication failure is directly caused, and the subsequent communication flow is affected.
In a conventional thought, the analysis flow of the outbound telegrams is generally according to the composition sequence of the telegrams and the reverse analysis: firstly, the common section message is analyzed; intercepting the user frame from the special section text; the starting mark, frame length, receiving address, reservation, information category and the following outbound information segment are intercepted from the user frame in sequence. If the receiving address and the address of the user can be matched, the outbound information is regarded as the own user information. Meanwhile, the CPU only judges whether the telegram state is normal or not according to the address type state and the information type state.
The user addresses are totally of six types: inbound address, outbound address, subordinate address, multicast address, broadcast address, and broadcast address. Wherein the inbound address is a local address used in the inbound information; the outbound address is a local address used for matching when the outbound information is analyzed; the subordinate address is an outbound address of a subordinate user subordinate to the user; the multicast address is an address representing a group constructed by a plurality of users; the general address is an address which is solidified when the user IC leaves the factory, and when a user who has the right to transmit the general broadcast transmits information through the address, only the user who also holds the address can receive the information. Different address types correspond to different communication types: the inbound address corresponds to the on-board receipt, the outbound address corresponds to the on-demand communication, the subordinate address belongs to the receiving-compatible mode, the multicast address belongs to the multicast communication, the broadcast address belongs to the broadcast communication, and the broadcast address belongs to the broadcast communication.
This parsing approach tends to ignore the inherent logic in the outbound flow of RDSS communications. For example, some outbound message types only support outbound in multicast communication types, but the address type of the recipient address is an outbound address that only supports on-demand or transceived communication types. Such a message is abnormal, but in the conventional flow, the message is determined as a normal outbound message and executed.
Meanwhile, the analytic mode excessively believes the reliability of the air signal, and the reliability judgment is not carried out on each content item of the telegraph text. In the case of weak signals, errors exist when the telegraph text is transmitted in the air. If no reliable protection strategy is provided for guaranteeing the correctness of each content item of the telegram, a user is easy to receive error information and cause communication abnormity.
Disclosure of Invention
The invention mainly aims to provide a novel Beidou RDSS content-based state anomaly monitoring method and system to solve the technical problems.
In order to achieve the purpose, the invention provides a Beidou RDSS content-based state anomaly monitoring method, which comprises the following steps:
s1, judging whether the receiver address of the current outbound message belongs to the user' S own address set, if yes, entering step S2; if not, discarding the current outbound message;
s2, acquiring the address type of the receiver address, and acquiring the first communication type of the current outbound message according to the address type;
s3, judging whether the information type of the current outbound telegraph text conforms to the effective information type of the RDSS protocol specification, if so, entering the step S4, and if not, discarding the current outbound telegraph text;
s4, acquiring a second communication type of the current outbound message according to the information type;
s5, judging whether the first communication type is consistent with the second communication type; if yes, judging that the current outbound telegraph text is normal; and if not, discarding the current outbound message.
Further, in step S2, if the address type is an inbound address, the communication type is an on-satellite response; if the address type is the outbound address, the communication type is on-demand; if the address type is the subordinate address, the communication type is the double receiving; if the address type is a multicast address, the communication type is multicast; if the address type is a broadcast address, the communication type is broadcast; if the address type is broadcast, the communication type is broadcast.
Further, in the step S4, if the information type is a satellite response returned by the satellite, the corresponding communication type is an on-satellite response; if the information type is on-demand communication, on-demand positioning or on-demand network management, the corresponding communication type is on-demand or concurrently received; if the information type is multicast communication, multicast positioning or multicast network management, the corresponding communication type is multicast; if the information type is broadcast communication, the corresponding communication type is broadcast communication; and if the information type is a ground response returned by the ground master control station, the corresponding communication type is broadcast.
Further, the method also comprises the following steps: when the current outbound telegraph text is judged to be normal, analyzing the current outbound telegraph text according to the information category, and comparing the analyzed telegraph text content item with an RDSS communication protocol; when all the message content items meet the requirement of the RDSS communication protocol, judging that the current outbound message is normal; and if the text content is wrong or the data is abnormal, judging that the current outbound text state is abnormal, and abandoning.
The invention also provides a Beidou RDSS content-based state anomaly monitoring system, which comprises:
the address comparison module is used for judging whether the receiver address of the current outbound message belongs to the address set of the user per se or not, and discarding the current outbound message when the receiver address of the current outbound message does not belong to the address set of the user per se;
the first analysis module is used for acquiring the address type of a receiver address when the receiver address of the current outbound message belongs to the address set of the user, and acquiring the first communication type of the current outbound message according to the address type;
the information type comparison module is used for judging whether the information type of the current outbound message conforms to the effective information type of the RDSS protocol specification or not, and discarding the current outbound message when the information type of the current outbound message does not conform to the effective information type of the RDSS protocol specification;
the second analysis module is used for acquiring a second communication type of the current outbound message according to the information type when the information type of the current outbound message conforms to the effective information type of the RDSS protocol specification;
the leading phase identification module is used for judging whether the first communication type is consistent with the second communication type; if yes, judging that the current outbound telegraph text is normal; and if not, discarding the current outbound message.
Further, the first parsing module is configured to determine: if the address type is an inbound address, the communication type is an on-satellite response; if the address type is the outbound address, the communication type is on-demand; if the address type is the subordinate address, the communication type is the double receiving; if the address type is a multicast address, the communication type is multicast; if the address type is a broadcast address, the communication type is broadcast; if the address type is broadcast, the communication type is broadcast.
Further, the second parsing module is configured to determine: if the information type is satellite response returned by the satellite, the corresponding communication type is on-satellite response; if the information type is on-demand communication, on-demand positioning or on-demand network management, the corresponding communication type is on-demand or concurrently received; if the information type is multicast communication, multicast positioning or multicast network management, the corresponding communication type is multicast; if the information type is broadcast communication, the corresponding communication type is broadcast communication; and if the information type is a ground response returned by the ground master control station, the corresponding communication type is broadcast.
The system further comprises a text analysis and identification module, wherein the text analysis and identification module is used for analyzing the current outbound text according to the information type and comparing the analyzed text content item with the RDSS communication protocol when judging that the current outbound text is normal; when all the message content items meet the requirement of the RDSS communication protocol, judging that the current outbound message is normal; and if the text content is wrong or the data is abnormal, judging that the current outbound text state is abnormal, and abandoning.
The invention also provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the steps of the method for monitoring the abnormal state of the Beidou RDSS based on the content are realized.
In the technical scheme of the invention, the Beidou RDSS content-based state anomaly monitoring method comprises the following steps:
s1, judging whether the receiver address of the current outbound message belongs to the user' S own address set, if yes, entering step S2; if not, discarding the current outbound message;
s2, acquiring the address type of the receiver address, and acquiring the first communication type of the current outbound message according to the address type;
s3, judging whether the information type of the current outbound telegraph text conforms to the effective information type of the RDSS protocol specification, if so, entering the step S4, and if not, discarding the current outbound telegraph text;
s4, acquiring a second communication type of the current outbound message according to the information type;
s5, judging whether the first communication type is consistent with the second communication type; if yes, judging that the current outbound telegraph text is normal; and if not, discarding the current outbound telegraph text.
The RDSS communication is more reasonable and standard, and the communication success rate and the communication reliability are obviously optimized. The protection strategy in this application includes the following two types: 1. different RDSS communication types and different communication flows are executed, and the types of a sending party and a receiving party are different. Therefore, the address type in the outbound message must conform to the logic embodied in the RDSS communication flow. 2. The RDSS communication protocol clearly defines the value range of each content item and the meaning represented by each value, and the content value analyzed from the outbound message must meet the requirements of the communication protocol. The main values of the method are represented by the following two points: 1. the state judgment of the telegraph text is expanded from the previous two-condition judgment into four-condition judgment, and abnormal outbound telegraph text is easier to be eliminated due to the increase of the judgment conditions. 2. The judgment is based on the former coarse judgment and becomes the fine judgment, especially the comparison of the results obtained in two times, so that the telegraph text with logic errors cannot escape.
Drawings
FIG. 1 is a schematic diagram of a Beidou RDSS state anomaly determination logic in the prior art;
fig. 2 is a schematic flow chart of a method for monitoring content-based abnormal status of the beidou RDSS in an embodiment of the present invention;
FIG. 3 is a flow of address resolution of a receiver in an embodiment of the invention;
FIG. 4 is a flowchart illustrating an embodiment of analyzing information type and identifying a previous phase;
fig. 5 is a schematic diagram of a hardware structure of a computer system operating with the content-based anomaly monitoring method for the beidou RDSS in the embodiment of the present invention;
the objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
Referring to fig. 1, in order to achieve the above object, the method for monitoring abnormal status of beidou RDSS based on content according to the present invention includes the steps of:
s1, judging whether the receiver address of the current outbound message belongs to the user' S own address set, if yes, entering step S2; and if not, discarding the current outbound message.
And S2, acquiring the address type of the receiver address, and acquiring the first communication type of the current outbound message according to the address type.
Specifically, in a specific embodiment, referring to fig. 3, the process of resolving the receiving address in step S2 includes obtaining an address type of the receiving address, and obtaining a first communication type of the current outbound message according to the address type; specifically, if the address type is an inbound address, the communication type is an on-satellite response; if the address type is the outbound address, the communication type is on-demand; if the address type is the subordinate address, the communication type is the double receiving; if the address type is a multicast address, the communication type is multicast; if the address type is a broadcast address, the communication type is broadcast; if the address type is broadcast, the communication type is broadcast.
And S3, judging whether the information type of the current outbound telegram conforms to the effective information type of the RDSS protocol specification, if so, entering the step S4, and if not, discarding the current outbound telegram.
And S4, acquiring the second communication type of the current outbound message according to the information type.
Specifically, in a specific embodiment, referring to fig. 4, in the step S4, the obtaining the second communication type of the current outbound message according to the information type specifically includes: if the information type is satellite response returned by the satellite, the corresponding communication type is on-satellite response; if the information type is on-demand communication, on-demand positioning or on-demand network management, the corresponding communication type is on-demand or concurrently received; if the information type is multicast communication, multicast positioning or multicast network management, the corresponding communication type is multicast; if the information type is broadcast communication, the corresponding communication type is broadcast communication; and if the information type is a ground response returned by the ground master control station, the corresponding communication type is broadcast.
S5, judging whether the first communication type is consistent with the second communication type; if yes, judging that the current outbound telegraph text is normal; and if not, discarding the current outbound message.
In the embodiment of the invention, two conditions for judging the normality of the message are newly added for communication type comparison and message content state judgment on the basis of the original mechanism from the RDSS communication protocol specification. The comparison of the conditional communication types requires that after the address of a receiver of each outbound message is analyzed, the communication type of the outbound message is deduced for the first time according to the address type of the receiver address, then after the information type is analyzed, the communication type of the outbound message is deduced for the second time according to the information type of the outbound message, and if the results of the two communication types are consistent, the conditions are passed. When the condition message content state judgment requires message content analysis, each content item of the message needs to be strictly compared with the RDSS communication protocol, whether each item is in the range required by the protocol is judged, and the condition is passed only when all the items meet the protocol requirement.
Further, the method also comprises the following steps: when the current outbound telegraph text is judged to be normal, analyzing the current outbound telegraph text according to the information category, and comparing the analyzed telegraph text content item with an RDSS communication protocol; when all the message content items meet the requirement of the RDSS communication protocol, judging that the current outbound message is normal; and if the text content is wrong or the data is abnormal, judging that the current outbound text state is abnormal, and abandoning.
In the technical scheme of the invention, the Beidou RDSS content-based state anomaly monitoring method comprises the following steps:
s1, judging whether the receiver address of the current outbound message belongs to the user' S own address set, if yes, entering step S2; if not, discarding the current outbound message;
s2, acquiring the address type of the receiver address, and acquiring the first communication type of the current outbound message according to the address type;
s3, judging whether the information type of the current outbound telegram conforms to the effective information type of the RDSS protocol specification, if so, entering the step S4, otherwise, discarding the current outbound telegram;
s4, acquiring a second communication type of the current outbound message according to the information type;
s5, judging whether the first communication type is consistent with the second communication type; if yes, judging that the current outbound telegraph text is normal; and if not, discarding the current outbound message.
The RDSS communication is more reasonable and standard, and the communication success rate and the communication reliability are obviously optimized. The main values of the method are represented by the following two points: the state judgment of the 1> message is expanded into four-condition judgment from the previous two-condition judgment, and abnormal outbound messages are easier to be eliminated due to the increase of the judgment conditions. 2, the judgment is based on the former coarse judgment to the fine judgment, especially the comparison of the results obtained by two times of deduction, so that the telegraph text with logic errors cannot escape.
The invention also provides a Beidou RDSS content-based state anomaly monitoring system, which comprises:
the address comparison module is used for judging whether the receiver address of the current outbound message belongs to the address set of the user per se or not, and discarding the current outbound message when the receiver address of the current outbound message does not belong to the address set of the user per se;
the first analysis module is used for acquiring the address type of a receiver address when the receiver address of the current outbound message belongs to the address set of the user, and acquiring the first communication type of the current outbound message according to the address type;
the information type comparison module is used for judging whether the information type of the current outbound message conforms to the effective information type of the RDSS protocol specification or not, and discarding the current outbound message when the information type of the current outbound message does not conform to the effective information type of the RDSS protocol specification;
the second analysis module is used for acquiring a second communication type of the current outbound message according to the information type when the information type of the current outbound message conforms to the effective information type of the RDSS protocol specification;
the leading phase identification module is used for judging whether the first communication type is consistent with the second communication type; if yes, judging that the current outbound telegraph text is normal; and if not, discarding the current outbound message.
Further, the first parsing module is configured to determine: if the address type is an inbound address, the communication type is an on-satellite response; if the address type is the outbound address, the communication type is on-demand; if the address type is the subordinate address, the communication type is the double receiving; if the address type is a multicast address, the communication type is multicast; if the address type is a broadcast address, the communication type is broadcast; if the address type is broadcast, the communication type is broadcast.
Further, the second parsing module is configured to determine: if the information type is satellite response returned by the satellite, the corresponding communication type is on-satellite response; if the information type is on-demand communication, on-demand positioning or on-demand network management, the corresponding communication type is on-demand or concurrently received; if the information type is multicast communication, multicast positioning or multicast network management, the corresponding communication type is multicast; if the information type is broadcast communication, the corresponding communication type is broadcast communication; and if the information type is a ground response returned by the ground master control station, the corresponding communication type is broadcast.
Further, still include the text analysis and identification module: the system is used for analyzing the current outbound telegraph text according to the information category and comparing the analyzed telegraph text content item with the RDSS communication protocol when judging that the current outbound telegraph text is normal; when all the message content items meet the requirement of the RDSS communication protocol, judging that the current outbound message is normal; and if the text content is wrong or the data is abnormal, judging that the current outbound text state is abnormal, and abandoning.
Referring to fig. 5, in an embodiment of the present invention, an embodiment of the present invention further provides a computer system 10 running the method for monitoring content-based abnormal state of the beidou RDSS, including a memory 51, a processor 52 and a computer program 53 stored in the memory 51 and running on the processor 52, where the processor 52 implements the steps of the method for monitoring content-based abnormal state of the beidou RDSS when executing the computer program 53.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of the above method for monitoring abnormality of a state based on content in the beidou RDSS are implemented.
That is, in the specific embodiment of the present invention, when executed by the processor, the computer program of the computer-readable storage medium implements the steps of the above-mentioned method for monitoring abnormality of status based on content in the beidou RDSS, and the method can also implement the advantage that RDSS communication is more reasonable and standard, and communication success rate and communication reliability are significantly optimized.
Illustratively, the computer program of the computer-readable storage medium comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, and the like. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.
In the description herein, references to the description of the term "an embodiment," "another embodiment," "other embodiments," or "first through Xth embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, method steps, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A Beidou RDSS content-based state anomaly monitoring method is characterized by comprising the following steps:
s1, judging whether the receiver address of the current outbound message belongs to the user' S own address set, if yes, entering step S2; if not, discarding the current outbound telegraph text;
s2, acquiring the address type of the receiver address, and acquiring the first communication type of the current outbound message according to the address type;
s3, judging whether the information type of the current outbound telegraph text conforms to the effective information type of the RDSS protocol specification, if so, entering the step S4, and if not, discarding the current outbound telegraph text;
s4, acquiring a second communication type of the current outbound message according to the information type;
s5, judging whether the first communication type is consistent with the second communication type; if yes, judging that the current outbound telegraph text is normal; and if not, discarding the current outbound message.
2. The Beidou RDSS content-based status anomaly monitoring method according to claim 1, wherein in the step S2, if the address type is an inbound address, the communication type is an on-satellite response; if the address type is the outbound address, the communication type is on-demand; if the address type is the subordinate address, the communication type is the double receiving; if the address type is a multicast address, the communication type is multicast; if the address type is a broadcast address, the communication type is broadcast; if the address type is broadcast, the communication type is broadcast.
3. The method for monitoring content-based state anomaly of the Beidou RDSS according to claim 1, wherein in the step S4, if the information type is satellite response returned by a satellite, the corresponding communication type is satellite response; if the information type is on-demand communication, on-demand positioning or on-demand network management, the corresponding communication type is on-demand or concurrently received; if the information type is multicast communication, multicast positioning or multicast network management, the corresponding communication type is multicast; if the information type is broadcast communication, the corresponding communication type is broadcast communication; and if the information type is a ground response returned by the ground master control station, the corresponding communication type is broadcast.
4. The Beidou RDSS content-based status anomaly monitoring method according to claim 1, further comprising the steps of: when the current outbound telegraph text is judged to be normal, analyzing the current outbound telegraph text according to the information category, and comparing the analyzed telegraph text content item with an RDSS communication protocol; when all the text content items meet the requirement of the RDSS communication protocol, judging that the current outbound text is normal; and if the text content is wrong or the data is abnormal, judging that the current outbound text state is abnormal, and abandoning.
5. The utility model provides a big dipper RDSS is unusual monitored control system in state based on content which characterized in that includes:
the address comparison module is used for judging whether the receiver address of the current outbound message belongs to the address set of the user per se or not, and discarding the current outbound message when the receiver address of the current outbound message does not belong to the address set of the user per se;
the first analysis module is used for acquiring the address type of a receiver address when the receiver address of the current outbound message belongs to the address set of the user, and acquiring the first communication type of the current outbound message according to the address type;
the information type comparison module is used for judging whether the information type of the current outbound message conforms to the effective information type of the RDSS protocol specification or not, and discarding the current outbound message when the information type of the current outbound message does not conform to the effective information type of the RDSS protocol specification;
the second analysis module is used for acquiring a second communication type of the current outbound message according to the information type when the information type of the current outbound message conforms to the effective information type of the RDSS protocol specification;
the leading phase identification module is used for judging whether the first communication type is consistent with the second communication type; if yes, judging that the current outbound telegraph text is normal; and if not, discarding the current outbound message.
6. The Beidou RDSS content-based status anomaly monitoring system according to claim 5, wherein the first parsing module is configured to determine: if the address type is an inbound address, the communication type is an on-satellite response; if the address type is the outbound address, the communication type is on-demand; if the address type is the subordinate address, the communication type is the double receiving; if the address type is a multicast address, the communication type is multicast; if the address type is a broadcast address, the communication type is broadcast; if the address type is broadcast, the communication type is broadcast.
7. The Beidou RDSS content-based status anomaly monitoring system according to claim 5, wherein the second parsing module is configured to determine: if the information type is satellite response returned by the satellite, the corresponding communication type is on-satellite response; if the information type is on-demand communication, on-demand positioning or on-demand network management, the corresponding communication type is on-demand or concurrently received; if the information type is multicast communication, multicast positioning or multicast network management, the corresponding communication type is multicast; if the information type is broadcast communication, the corresponding communication type is broadcast communication; and if the information type is a ground response returned by the ground master control station, the corresponding communication type is broadcast.
8. The Beidou RDSS content-based state anomaly monitoring system according to claim 5, further comprising a message parsing and identifying module, wherein the message parsing and identifying module is used for parsing the current outbound message according to the information type and comparing the parsed message content item with an RDSS communication protocol when the current outbound message is judged to be normal; when all the message content items meet the requirement of the RDSS communication protocol, judging that the current outbound message is normal; and if the text content is wrong or the data is abnormal, judging that the current outbound text state is abnormal, and abandoning.
9. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the method steps of the content based anomaly monitoring method of the beidou RDSS as claimed in any one of claims 1 to 4.
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