CN112398528B - Autonomous handling method for inter-satellite link signal transmission abnormity - Google Patents
Autonomous handling method for inter-satellite link signal transmission abnormity Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18558—Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
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- H—ELECTRICITY
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- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18597—Arrangements for system physical machines management, i.e. for construction, operations control, administration, maintenance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/04—Arrangements for maintaining operational condition
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses an autonomous disposal method for inter-satellite link signal transmission abnormity, which comprises the following steps that firstly, a satellite receives and transmits signals with at least one other satellite according to time beat and the inter-satellite link is established according to ground planning; then the satellite modulates and demodulates the received signal and judges whether the signal contains alarm information; and when the satellite receives the alarm information, judging whether the signal transmission of the inter-satellite link of the satellite is abnormal or not, and if so, automatically removing the fault according to a preset fault removal scheme.
Description
Technical Field
The invention relates to the technical field of aerospace, in particular to an autonomous handling method for inter-satellite link signal emission abnormity.
Background
In 7 months in 2020, china announces that the construction of a Beidou No. three global navigation positioning system is completed, the system has a unique inter-satellite link technology in China, and through a phased array microwave inter-satellite link terminal configured for each Beidou No. three satellite, the two-way distance measurement and communication functions with other satellites are realized; and the communication ranging of the same satellite and a plurality of satellites or ground stations is realized by the way of signal receiving and transmitting time division switching and signal pointing space division multiplexing, thereby forming a dynamically switched inter-satellite link network.
The inter-satellite link network of the Beidou III system bears important functions of remote measurement and control, short message data transmission, navigation message whole network updating and the like of satellites in an overseas process, and the functions all need stable and reliable communication links to be established between inter-satellite link loads of the satellites and other satellites or ground stations to ensure information transmission. In practice, due to the complexity of the new technology of the inter-satellite link and the badness of the space environment where the medium and high orbit spacecraft is located, the possibility of abnormal signal receiving and sending exists in the load of the inter-satellite link of the satellite, and if the fault cannot be eliminated in time, the service application and the system operation are seriously influenced.
The current handling method of the ground master control station after abnormal signal transceiving of the inter-satellite link of the Beidou third satellite is as follows: if the inter-satellite link of the satellite has abnormal signal reception, the ground can carry out abnormal judgment and eliminate faults through satellite remote measurement, but when the inter-satellite link of the satellite has abnormal signal transmission, because the antenna aperture has no signal self-closed loop circuit comparison, no relevant remote measurement can be visually displayed, the ground main control station can only carry out correctness judgment by receiving the inter-satellite link signal of the satellite, or carry out comprehensive analysis by collecting other satellite remote measurements linked with the ground main control station.
The disposal method of the ground master control station after the inter-satellite link signal transmission is abnormal has the following defects: since China cannot distribute stations globally, when the satellite has abnormal inter-satellite link signal transmission, the ground station can only judge the correctness of the inter-satellite link signal until the satellite runs into the environment, and according to the satellite orbit, the satellite often needs hours to tens of hours and cannot respond in time; in addition, the ground main control station judges by collecting other satellite telemetering modes for establishing a link with the ground main control station, and because the link between the satellites is continuously switched to an object for establishing the link under a time division system, the judgment can be made only after a ground long pipe worker synthesizes a plurality of satellite telemetering modes and performs time matching, so that the ground main control station has certain subjectivity and uncontrollable performance, and the general disposal time needs hours.
Therefore, an autonomous warning and recovery method for abnormal signal transmission of the inter-satellite link of the Beidou third satellite is needed, all satellites in the whole inter-satellite link network cooperate together, and detection and fault removal of abnormal signal transmission of the inter-satellite link can be completed autonomously.
Disclosure of Invention
Aiming at partial or all problems in the prior art, the invention provides an autonomous handling method for inter-satellite link signal transmission abnormity, which comprises the following steps:
establishing an inter-satellite link, and performing signal receiving and transmitting by the satellite and at least one other satellite according to the time beat according to ground planning to establish the inter-satellite link;
receiving alarm information, and carrying out modulation and demodulation on a received signal by a satellite to judge whether the signal contains the alarm information; and
and (4) fault elimination, wherein if alarm information is received, the satellite judges whether the signal transmission of the link between the satellites of the satellite is abnormal, and if the signal transmission of the link between the satellites of the satellite is abnormal, the fault elimination is automatically carried out according to a preset fault elimination scheme.
Further, all satellites in the inter-satellite link work cooperatively according to the same mechanism.
Furthermore, all the satellites in the inter-satellite link are Beidou satellite III, and each satellite is in a long-term operation management mode.
Further, the alarm information is sent by other satellites in the inter-satellite link, the other satellites in the inter-satellite link detect the received signals, and when the signals are abnormal, the alarm information is sent to the satellite with the abnormal signal emission.
Further, the satellite detecting the received signal includes determining whether a number of times of satellite signal acquisition failure is greater than a number of times threshold Q lss And if the signal is larger than the preset value, the received signal is abnormal.
Further, the satellite detecting the received signal comprises judging whether the communication demodulation error rate of the signal received by the satellite is larger than a communication error rate threshold value Q lwm And if the signal is larger than the preset value, the received signal is abnormal.
Further, the alarm information is modulated in an idle information frame or an idle field in an information frame.
Furthermore, the autonomous disposal method further comprises the step of resetting and detecting the frequency threshold Q after the satellite sends the alarm information lss And/or said communication bit error rate threshold Q lwm 。
Further, the satellite judges whether the signal transmission of the link between the satellites of the satellite is abnormal, and the time window Q is judged in the alarm ltw And judging the timeliness of the alarm information.
Further, the satellite judges the inter-satellite link of the satelliteThe method also comprises the steps of confirming the number of the links for sending alarm information to the satellite and judging whether the number of the satellites exceeds a threshold Q of the number of the multi-satellite alarm links llc And if the satellite link signal exceeds the preset threshold, the satellite inter-satellite link signal is abnormally transmitted.
Further, the preset fault elimination scheme includes software reloading, stand-alone restarting and stand-alone backup switching for abnormal equipment.
Further, the autonomous handling method further includes resetting the alarm determination time window Q after the troubleshooting is completed ltw And/or the number threshold Q of the multi-satellite alarm links llc 。
The invention provides an autonomous disposal method for inter-satellite link signal transmission abnormity, which is suitable for an inter-satellite link network formed by a Beidou third satellite or other inter-satellite link networks working cooperatively according to the same mechanism. The method can realize that the alarm is sent to the satellite with the abnormal inter-satellite link signal transmission independently, and the abnormal satellite automatically finishes the fault elimination after comprehensively judging the alarm, thereby effectively improving the response speed, greatly shortening the fault duration and having no need of ground intervention.
Drawings
To further clarify the above and other advantages and features of embodiments of the present invention, a more particular description of embodiments of the present invention will be rendered by reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. In the drawings, the same or corresponding parts will be denoted by the same or similar reference numerals for clarity.
Fig. 1 is a schematic flow chart illustrating a method for autonomously handling an inter-satellite link signal transmission anomaly according to an embodiment of the present invention; and
fig. 2 is a schematic diagram illustrating a constellation coordination mechanism flow of an autonomous handling method for an inter-satellite link signal transmission anomaly according to an embodiment of the present invention.
Detailed Description
In the following description, the present invention is described with reference to examples. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details, or with other alternative and/or additional methods, materials, or components. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention. Similarly, for purposes of explanation, specific numbers, materials and configurations are set forth in order to provide a thorough understanding of the embodiments of the invention. However, the invention is not limited to these specific details. Further, it should be understood that the embodiments shown in the figures are illustrative representations and are not necessarily drawn to scale.
Reference in the specification to "one embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.
It should be noted that the embodiment of the present invention describes the process steps in a specific order, however, this is only for the purpose of illustrating the specific embodiment, and does not limit the sequence of the steps. Rather, in various embodiments of the invention, the order of the steps may be adjusted according to process adjustments.
In order to realize the autonomous disposal of the inter-satellite link signal emission abnormity, the invention provides an autonomous disposal method of the inter-satellite link signal emission abnormity, all satellites in an inter-satellite link network cooperatively work according to the same mechanism, when the inter-satellite link load has the signal emission abnormity, other network nodes in a constellation carry out mutual verification of signal receiving states, alarm information is automatically sent out to the abnormal satellite, the abnormal satellite judges and autonomously finishes the fault removal of the signal emission abnormity. The solution of the invention is further described below with reference to the accompanying drawings of embodiments.
Fig. 1 is a flowchart illustrating an autonomous handling method for inter-satellite link signal transmission anomalies according to an embodiment of the present invention. As shown in fig. 1, an autonomous handling method for inter-satellite link signal transmission abnormality includes:
first, in step 101, an inter-satellite link is established. The satellite receives and transmits signals with at least one other satellite according to the time beat and the ground plan, and an inter-satellite link is established; in one embodiment of the invention, all satellites in the inter-satellite link are Beidou No. three satellites, each satellite is in a long-term operation management mode, and a ground main control station carries out link establishment planning on the whole network satellite according to a routine long-term operation management flow; after the inter-satellite link is established, under normal conditions, the satellite A plans according to the ground at a time T rB Performs inter-satellite link signal transceiving with satellite B at time T r* Receiving and transmitting signals of inter-satellite link with satellite, and at time T rN Receiving and transmitting inter-satellite link signals with the satellite N, wherein the inter-satellite link signals of the satellite B, the satellite X and the satellite N are captured, received and demodulated normally, as shown in FIG. 2;
next, at step 102, alert information is received. The satellite modulates and demodulates the received signal and judges whether the signal contains warning information, wherein the warning information is sent by other satellites in the inter-satellite link, the other satellites in the inter-satellite link detect the received signal, and when the signal is abnormal, the warning information is sent to the satellite which sends the abnormal signal; in an embodiment of the present invention, the satellite determines whether the received signal has an abnormality by the number of times of satellite signal acquisition failure and/or the communication demodulation error rate of the signal received by the satellite:
judging whether the times of satellite signal acquisition failure are larger than a time threshold value Q lss If the received signal is greater than the preset value, the received signal is abnormal; and/or
Judging whether the communication demodulation error rate of the signals received by the satellite is larger than a communication error rate threshold value Q lwm If the received signal is greater than the preset value, the received signal is abnormal;
in another embodiment of the present invention, the alarm information is modulated in an idle information frame or an idle field in an information frame; in another embodiment of the present invention, after the satellite sends the warning message, the detection threshold Q needs to be reset lss And/or said communication bit error rate threshold Q lwm ；
As shown in fig. 2, at time T eB The satellite a and the satellite B should receive and transmit inter-satellite link signals, but the satellite B cannot capture or correctly demodulate the inter-satellite link signals of the satellite a, and the satellite B judges the threshold Q according to the preset value lss And/or Q lwm Judging, if the relevant value exceeds the threshold value, modulating alarm information in an idle information frame or an idle field in the information frame when transmitting signals to the satellite A; similarly, at time T e* /T eN The satellite A and the satellite N should receive and transmit inter-satellite link signals, but the satellite A and the satellite N cannot capture or correctly demodulate the inter-satellite link signals of the satellite A, and the satellite A and the satellite N are based on a preset judgment threshold Q lss And/or Q lwm Judging, if the correlation value exceeds the threshold value, when transmitting signal to satellite A, modulating alarm information in idle information frame or idle field in information frame, after the alarm information is sent, judging threshold value Q lss 、Q lwm Resetting, and continuing to monitor the received signal; and
finally, at step 103, the fault is cleared. And after the satellite receives the alarm information, judging whether the signal transmission of the inter-satellite link of the satellite is abnormal, and if so, automatically removing the fault according to a preset fault removal scheme. In one embodiment of the invention, the satellite determines the time window Q in the alarm ltw In another embodiment of the invention, in order to avoid single satellite false alarm, the satellite also confirms the number of the links for sending the alarm information to the satellite and judges whether the number of the satellites exceeds a threshold Q of the number of the multi-satellite alarm links llc If the satellite link signal exceeds the preset threshold value, the satellite inter-satellite link signal is abnormally transmitted; in yet another embodiment of the present invention, theThe preset fault elimination scheme comprises software reloading, stand-alone restarting and stand-alone backup switching on abnormal equipment. In order to avoid that other satellites judge that the transmitted signals of the satellites are abnormal and continue to send alarm information during fault elimination of the satellites, so that the satellites repeat abnormal treatment after fault elimination, the alarm judgment time window Q is carried out only after the fault elimination is finished ltw And/or the number threshold Q of the multi-satellite alarm links llc Is reset.
While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not limitation. It will be apparent to persons skilled in the relevant art that various combinations, modifications, and changes can be made thereto without departing from the spirit and scope of the invention. Thus, the breadth and scope of the present invention disclosed herein should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.
Claims (8)
1. An autonomous handling method for inter-satellite link signal transmission abnormity is characterized by comprising the following steps:
the satellite receives and transmits signals with at least one other satellite according to the time beat and the ground plan, and an inter-satellite link is established;
the satellite modulates and demodulates the received signal and judges whether the signal contains warning information, wherein the warning information is sent by other satellites in the inter-satellite link: after other satellites in the inter-satellite link receive signals, whether the times of satellite signal acquisition failure are larger than a time threshold Q or not is judged lss And/or whether the communication demodulation error rate of the received signal is greater than the communication error rate threshold Q lwm If the number of times of satellite signal acquisition failure is more than Q lss And/or the communication demodulation error rate of the received signal is greater than Q lwm Sending alarm information to the satellite emitting the abnormal signal; and
and after the satellite receives the alarm information, judging whether the signal transmission of the inter-satellite link of the satellite is abnormal, and if so, automatically removing the fault according to a preset fault removal scheme.
2. The autonomous handling method of claim 1 wherein all satellites in the inter-satellite link are beidou No. three satellites and each satellite is in long term operation management mode.
3. The autonomous handling method of claim 1 wherein the warning information is modulated in an idle information frame or an idle field in an information frame.
4. The autonomous treatment method of claim 1 further comprising resetting the number threshold Q after the satellite has sent the warning message lss And/or said communication bit error rate threshold Q lwm 。
5. The autonomous handling method of claim 1 wherein the satellite determining whether the inter-satellite link signal transmission is abnormal comprises determining a time window Q for the alarm determination ltw And judging the timeliness of the alarm information.
6. The autonomous treating method of claim 5, further comprising confirming a number of links transmitting an alarm message to the own satellite and determining whether the number of links exceeds a multi-satellite alarm link number threshold Q llc And if the satellite link signal exceeds the preset threshold, the satellite inter-satellite link signal is abnormally transmitted.
7. The autonomic handling method of claim 1 wherein the troubleshooting preset scheme comprises software reload, stand-alone restart, backup stand-alone switch for an abnormal device.
8. The autonomous handling method of claim 6 further comprising resetting the alarm determination time window Q after troubleshooting is complete ltw And/or the number threshold Q of the multi-satellite alarm links llc 。
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| CN202211518428.6A CN115913333B (en) | 2020-11-05 | 2020-11-05 | Beidou satellite network |
| CN202011221540.4A CN112398528B (en) | 2020-11-05 | 2020-11-05 | Autonomous handling method for inter-satellite link signal transmission abnormity |
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| CN102075232B (en) * | 2011-01-20 | 2013-06-05 | 大连大学 | Link reconfiguration method of links among satellites |
| CN103986512B (en) * | 2014-04-30 | 2017-05-03 | 南京邮电大学 | Satellite network inter-satellite link failure recovery method based on regional division |
| EP3442135A1 (en) * | 2014-09-17 | 2019-02-13 | Iridium Satellite LLC | Satellite communications networking |
| CN106597475B (en) * | 2016-11-14 | 2019-01-11 | 中国西安卫星测控中心 | A kind of method that Beidou Navigation System inter-satellite link is established |
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| CN111308511B (en) * | 2020-03-05 | 2021-12-24 | 中国科学院微小卫星创新研究院 | Autonomous health management system and method for navigation satellite load subsystem |
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