Airplane autonomous distress tracking method and system

Abstract

The embodiment of the invention discloses an aircraft autonomous distress tracking method, and the method comprises the steps: obtaining flight data, obtaining the state parameters of an aircraft according to the flight data, and judging whether the aircraft is in a distress state or not according to the state parameters of the aircraft; if it is judged that the airplane is in a distress state according to the airplane state parameters, whether a tracking triggering condition is met or not is judged; if it is judged that the tracking triggering condition is met, executing autonomous distress tracking operation; wherein the autonomous distress tracking operation comprises the steps of obtaining aircraft position information, generating aircraft distress tracking information containing the aircraft position information, and continuously or periodically sending the aircraft distress tracking information to a target body.

Description

Technical Field

[0001] The present application relates to the field of aircraft avionics technology, and in particular to a method and system for autonomous aircraft distress tracking. Background Art

[0002] On June 1, 2009, Air France Flight AF447 lost contact two hours after takeoff during a transoceanic flight and crashed into the Atlantic Ocean. After two years of searching and a cost of €32 million, the black box was finally found on May 2, 2011. In March 2014, Malaysia Airlines Flight MH370 crashed in the Indian Ocean. The search lasted 1,046 days, covering an area of ​​approximately 120,000 square kilometers. Over 25 countries deployed satellites, warships, and aircraft, spending nearly $160 million, yet only three pieces of aircraft debris were recovered. These two aviation accidents sent shockwaves around the world, highlighting the limitations of the current air navigation system, which hindered the timely identification and location of aircraft in distress, hindering effective search and rescue efforts. This prompted ICAO member states and the global industry to systematically advance aircraft tracking.

[0003] Today's civil airliners are equipped with Emergency Locator Transmitters (ELTs) to help determine the location of an aircraft crash after it occurs. Currently, ELTs still have some limitations. First, ELTs alone cannot directly provide location information. Location is calculated using radio frequency direction finding or the Doppler shift generated by the relative motion between the satellite and the ELT. This process can take a long time and is not very accurate. Furthermore, the automatic activation of the ELT is triggered at the moment of the aircraft crash, such as when the aircraft experiences a violent collision or crashes, or when water flooding is detected. The ELT is automatically activated and cannot provide information on the aircraft's location and distress during the distress period before the crash, making it difficult to locate the accident site. Furthermore, aircraft crashes in remote areas (including ocean areas) pose significant challenges to search and rescue personnel and accident investigators.

[0004] Although ELT will send 121.5MHz and 406MHz distress signals to the Global Satellite Search and Rescue System (COSPAS-SARSAT) after a plane crash, it is difficult to find the crash site in a timely and accurate manner due to the lack of location information of the aircraft in distress. Summary of the Invention

[0005] The embodiments of this specification provide a method and system for autonomously tracking an aircraft in distress, so as to solve the technical problem of how to track an aircraft in distress.

[0006] To solve the above technical problems, the embodiments of this specification provide the following technical solutions:

[0007] The present invention provides a method for autonomously tracking an aircraft in distress, the method comprising:

[0008] Acquiring flight data, obtaining aircraft status parameters based on the flight data, and determining whether the aircraft is in a distress state based on the aircraft status parameters;

[0009] If the aircraft is judged to be in distress according to the aircraft status parameters, then determining whether a tracking trigger condition is met;

[0010] If it is determined that the tracking trigger conditions are met, the autonomous distress tracking operation is performed;

[0011] The autonomous distress tracking operation includes:

[0012] Acquire aircraft location information, generate aircraft distress tracking information containing the aircraft location information, and continuously or periodically send the aircraft distress tracking information to a target entity.

[0013] Preferably, determining whether the tracking trigger condition is met includes:

[0014] A distress notification is generated, and whether a tracking trigger condition is met is determined based on the duration of the distress notification.

[0015] Preferably, obtaining aircraft position information includes:

[0016] Satellite navigation information is received through a multi-band antenna, and aircraft position information is obtained based on the flight navigation information.

[0017] Preferably, the aircraft distress tracking information further includes aircraft identification and / or distress events.

[0018] Preferably, the method further comprises:

[0019] When the tracking trigger command is obtained, the autonomous distress tracking operation is performed.

[0020] Preferably, the tracking trigger instruction is sent from a subject other than the aircraft.

[0021] Preferably, continuously or periodically sending the aircraft distress tracking information to the target entity includes:

[0022] The aircraft distress tracking information is continuously or periodically transmitted to COSPAS-SARSAT.

[0023] The present invention provides an autonomous aircraft distress tracking system, comprising:

[0024] An onboard data processing module, configured to acquire flight data and obtain aircraft status parameters based on the flight data;

[0025] A distress state detection module, configured to determine whether the aircraft is in a distress state based on the aircraft state parameters;

[0026] a distress transmission trigger module, configured to determine whether a tracking trigger condition is satisfied if the distress state detection module determines that the aircraft is in a distress state;

[0027] a distress tracking information transmission unit, configured to execute an autonomous distress tracking operation if the distress transmission trigger module determines that a tracking trigger condition is satisfied;

[0028] The autonomous distress tracking operation includes:

[0029] Acquire aircraft location information, generate aircraft distress tracking information containing the aircraft location information, and continuously or periodically send the aircraft distress tracking information to a target entity.

[0030] Preferably, the distress tracking information transmission unit comprises:

[0031] GNSS navigation receiving module, used to obtain aircraft position information;

[0032] A tracking information generating module, configured to generate tracking information of the aircraft in distress;

[0033] The information transmitting module is used to continuously or periodically send the aircraft distress tracking information to the target subject.

[0034] Preferably, the system further comprises:

[0035] The instruction transceiver module is used to obtain a tracking trigger instruction, where the tracking trigger instruction is used to trigger the distress tracking information transmission unit to perform the autonomous distress tracking operation.

[0036] At least one of the above technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects:

[0037] By detecting in real time whether an aircraft is in distress and tracking the aircraft in distress in real time, the position of the aircraft in distress and the position where the flight ends can be accurately located, and the aircraft in distress tracking can be achieved, which is conducive to timely and accurate guidance of search and rescue of distressed aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following briefly describes the drawings required for use in the embodiments of this specification or the prior art description. Obviously, the following only describes the drawings required for use in some embodiments of this application. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0039] Figure 1 This is a flowchart of autonomous aircraft distress tracking in the first embodiment of this specification.

[0040] Figure 2 It is a schematic diagram of the architecture of the autonomous aircraft distress tracking system in the first embodiment of this specification. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments involved in the specific implementation methods are only part of the embodiments of this application, not all of the embodiments. All other embodiments obtained based on the embodiments in the specific implementation methods by those skilled in the art without making creative work should fall within the scope of protection of this application.

[0042] The first embodiment of this specification (hereinafter referred to as "Embodiment 1") provides a method for autonomous aircraft distress tracking. The execution subject of Embodiment 1 includes, but is not limited to, a terminal, a server, an operating system, or an application. That is, the execution subject can be diverse and can be set, used, or changed as needed. Furthermore, a third-party application can assist the execution subject in executing Embodiment 1. For example, the autonomous aircraft distress tracking method of Embodiment 1 can be executed by a server, and a corresponding application can be installed on a terminal (which can be held by a user). Data can be transmitted between the terminal or application and the server, thereby assisting the server in executing the autonomous aircraft distress tracking method of Embodiment 1.

[0043] The autonomous aircraft distress tracking provided in the first embodiment includes:

[0044] S101: Acquire flight data, obtain aircraft status parameters based on the flight data, and determine whether the aircraft is in distress based on the aircraft status parameters;

[0045] During specific aircraft phases (including flight phases), flight data from aircraft systems can be continuously or periodically collected. This real-time flight data can be processed to derive aircraft state parameters based on the flight data. Since flight data is collected continuously or periodically, aircraft state parameters can also be generated continuously or periodically.

[0046] Aircraft status parameters are monitored and used to determine whether the aircraft is in a distress state. For example, existing or newly generated aircraft status parameters may be analyzed at each preset period to determine whether the aircraft status parameters meet preset distress conditions, thereby identifying whether the aircraft is currently in a distress state. If the aircraft status parameters meet the distress conditions, the aircraft is determined to be in a distress state.

[0047] S103: If it is determined that the aircraft is in distress according to the aircraft status parameters, determining whether a tracking trigger condition is met;

[0048] If the aircraft is judged to be in distress based on the aircraft status parameters, it can be determined whether the tracking trigger condition is met. Determining whether the tracking trigger condition is met may include: generating a distress notification, and determining whether the tracking trigger condition is met based on the duration of the distress notification.

[0049] Specifically, if an aircraft is determined to be in distress, a distress notification (of any form or content) may be generated and monitored for duration. If the distress notification persists within a preset duration or if the duration exceeds a preset duration, the tracking trigger condition is met.

[0050] Of course, a distress notification may not persist after it's generated. For example, the aircraft's status may change and it may no longer be in distress, or the flight crew may disable the distress notification. Therefore, if the distress notification doesn't persist within the preset duration, or if the duration of the distress notification doesn't exceed the preset duration, then the tracking trigger conditions are considered unmet.

[0051] S105: If it is determined that the tracking trigger condition is met, an autonomous distress tracking operation is performed; wherein, the autonomous distress tracking operation includes: obtaining aircraft position information, generating aircraft distress tracking information containing the aircraft position information, and continuously or periodically sending the aircraft distress tracking information to the target entity.

[0052] In the first embodiment, if the tracking trigger condition is determined to be satisfied, the autonomous distress tracking operation is executed, thereby achieving autonomous tracking of the aircraft. For example, if the tracking trigger condition is determined to be satisfied, the execution subject of the first embodiment generates a trigger instruction to trigger the execution of the autonomous distress tracking operation.

[0053] The autonomous distress tracking operation may include: obtaining aircraft position information, generating aircraft distress tracking information including the aircraft position information, and continuously or periodically transmitting the aircraft distress tracking information to the target entity. The autonomous distress tracking operation may continue until the aircraft crashes.

[0054] Specifically, the aircraft's position information can be obtained through a position source provided on the aircraft itself, or obtaining the aircraft's position information can include receiving satellite navigation information via a multi-band antenna (the multi-band antenna can be part of the execution body of Example 1), and obtaining the aircraft's position information based on the flight navigation information. For example, a GNSS navigation receiver (the GNSS navigation receiver can be part of the execution body of Example 1) is provided on the aircraft, and the GNSS navigation receiver receives GNSS navigation signals via the multi-band antenna to calculate the aircraft's position information.

[0055] The above two methods of obtaining aircraft position information can be selected as needed or combined to determine the aircraft position information, or one can be selected as the first choice for determining the aircraft position information and the other as a supplementary method for determining the aircraft position information.

[0056] In the first embodiment, in addition to the aircraft location information, the aircraft distress tracking information may include any content, such as aircraft identification and / or distress event information. The distress event may be obtained by analyzing the aforementioned aircraft status parameters.

[0057] Since after the aircraft is determined to be in distress and the tracking trigger conditions are met, the aircraft is generally still in flight or will continue to fly for a period of time before the accident, and the aircraft position is still changing, the aircraft position information can be generated continuously or periodically, and the aircraft distress tracking information can also be generated continuously or periodically, and the aircraft distress tracking information can be sent to the target entity continuously or periodically.

[0058] The above describes the automatic determination of whether an aircraft is in distress, the automatic determination of whether tracking trigger conditions are met, and the automatic execution of autonomous distress tracking operations. In Example 1, autonomous distress tracking operations can also be triggered by a tracking trigger instruction. Specifically, upon receiving a tracking trigger instruction, autonomous distress tracking operations are executed, thereby continuously or periodically acquiring aircraft position information, continuously or periodically generating aircraft distress tracking information, and continuously or periodically transmitting the aircraft distress tracking information to the target entity.

[0059] Preferably, the tracking trigger instruction can be obtained from a subject outside the aircraft, or it can be controlled and sent by relevant personnel on the aircraft (such as a flight crew). For example, a Beidou short message transceiver can be set on the aircraft (the Beidou short message transceiver can be used as part of the execution subject of Example 1), and the Beidou short message transceiver receives the tracking trigger instruction from the remote end (such as the ground end) through a multi-band antenna. When the Beidou short message transceiver obtains the tracking trigger instruction, the execution subject of Example 1 executes the autonomous distress tracking operation. Alternatively, the tracking trigger instruction sent by the remote end can authorize relevant personnel on the aircraft to trigger the execution of the autonomous distress tracking operation. For another example, the flight crew can manually control the execution subject of Example 1 to generate or send a tracking trigger instruction to trigger the execution of the autonomous distress tracking operation.

[0060] In the first embodiment, whether the autonomous distress tracking operation is automatically executed or triggered by a tracking trigger instruction, once the autonomous distress tracking operation is executed, aircraft distress tracking information is continuously or periodically transmitted to the target entity. Preferably, continuously or periodically transmitting the aircraft distress tracking information to the target entity may include continuously or periodically transmitting the aircraft distress tracking information to COSPAS-SARSAT. Specifically, the ELT on the aircraft may continuously or periodically transmit 121.5 MHz and 406 MHz aircraft distress tracking information to COSPAS-SARSAT (i.e., COSPAS-SARSAT or certain specific devices affiliated with COSPAS-SARSAT may serve as the target entity) via a multi-band antenna.

[0061] The following combination Figure 1 , an exemplary description of Example 1 is given below:

[0062] Normal Flight Phase: Receives flight data from aircraft systems, processes it, and obtains aircraft status parameters. These parameters are monitored in real time to identify whether the aircraft is in distress. If the parameters meet the distress criteria, the aircraft is deemed to be in distress, generates a distress notification, and enters the Aircraft in Distress Phase.

[0063] Aircraft Distress Phase: When distress conditions are met, the duration of the distress notification determines whether to trigger autonomous distress tracking. If the distress notification duration exceeds the preset value, the tracking trigger condition is met and the autonomous distress tracking phase begins. If the distress condition is resolved (for example, the aircraft status parameters no longer meet the distress condition), the normal flight phase resumes.

[0064] Autonomous distress tracking: When the tracking trigger conditions are met, a trigger command is generated, triggering the autonomous distress tracking operation. The aircraft's position information is obtained through GNSS navigation signals, and aircraft distress tracking information is generated, including aircraft identification, aircraft position information, and distress events. 121.5MHz and 406MHz distress signals (including aircraft distress tracking information) are transmitted to COSPAS-SARSAT via ELT.

[0065] At any stage, the flight crew can manually control the sending of tracking trigger instructions. The ground aircraft operator can use the Beidou short message function to remotely control the execution body of the first embodiment to generate tracking trigger instructions.

[0066] Accident Investigation Phase: Autonomous distress tracking operations will continue until the aircraft crashes, that is, the aircraft in distress will be tracked until the aircraft crashes, so that the flight end position can be accurately located and the ground search and rescue work for the aircraft in distress can be guided.

[0067] The first embodiment can achieve the following beneficial effects:

[0068] In Example 1, the aircraft distress detection and tracking window is relocated to detect in real time whether the aircraft is in distress. Once in distress, continuous tracking of the aircraft's position is initiated, enabling tracking of the aircraft's position to be initiated at the initial stage of an aircraft distress. By tracking the aircraft in distress in real time, the aircraft's position at the time of the distress and the flight's end position can be accurately located, providing more comprehensive aircraft position information for aircraft search and rescue operations. This facilitates timely and accurate guidance of search and rescue operations for aircraft in distress, and addresses current issues such as aircraft being unable to be discovered in a timely manner after distress, difficulty determining the crash location, difficulty in search and rescue operations, and high costs. Furthermore, the system meets the GADSS operational requirements proposed by ICAO.

[0069] In the first embodiment, the satellite navigation signal is used to calculate the aircraft position, thereby improving the accuracy of the aircraft position tracking information and being able to serve as a supplementary position source when the onboard position source is lost, thereby improving the accuracy and reliability of the position information.

[0070] In addition to automatically executing autonomous distress tracking, the first embodiment also provides the ability to remotely or manually initiate distress tracking, enabling autonomous distress tracking to be executed via a remotely transmitted or manually controlled tracking trigger command. This allows autonomous distress tracking to be executed remotely or manually, even when the aircraft is unable to activate distress tracking through conventional or automatic means (e.g., due to crew incapacitation, component failure, or malfunction). This allows autonomous distress tracking to be executed remotely or manually, or by a ground-based (e.g., authorized ground-based user, including but not limited to the aircraft operator), or manually.

[0071] The second embodiment of this specification (hereinafter referred to as "embodiment 2") provides an autonomous aircraft distress tracking system corresponding to embodiment 1. Figure 2 , the system comprising:

[0072] An onboard data processing module, configured to acquire flight data and obtain aircraft status parameters based on the flight data;

[0073] A distress state detection module, configured to determine whether the aircraft is in a distress state based on the aircraft state parameters;

[0074] a distress transmission trigger module, configured to determine whether a tracking trigger condition is satisfied if the distress state detection module determines that the aircraft is in a distress state;

[0075] a distress tracking information transmission unit, configured to execute an autonomous distress tracking operation if the distress transmission trigger module determines that a tracking trigger condition is satisfied;

[0076] The autonomous distress tracking operation includes:

[0077] Acquire aircraft location information, generate aircraft distress tracking information containing the aircraft location information, and continuously or periodically send the aircraft distress tracking information to a target entity.

[0078] Preferably, the distress tracking information transmission unit comprises:

[0079] GNSS navigation receiving module, used to obtain aircraft position information;

[0080] A tracking information generating module, configured to generate tracking information of the aircraft in distress;

[0081] The information transmitting module is used to continuously or periodically send the aircraft distress tracking information to the target subject.

[0082] Preferably, the system further comprises:

[0083] The instruction transceiver module is used to obtain a tracking trigger instruction, where the tracking trigger instruction is used to trigger the distress tracking information transmission unit to perform the autonomous distress tracking operation.

[0084] The following combination Figure 1 and Figure 2 , an exemplary description of the second embodiment is given below:

[0085] In this example, the aircraft autonomous distress tracking system may include an ADT computer and a distress tracking information transmission unit.

[0086] Among them, the ADT computer identifies whether the aircraft is in distress based on the flight data input from the aircraft system through data processing and analysis, and decides whether to trigger the transmission of aircraft distress tracking information.

[0087] The distress tracking information transmission unit generates aircraft distress tracking information in combination with the GNSS navigation position. When it receives a trigger command from the ADT computer, flight crew or remote end, it transmits 121.5MHz and 406MHZ distress signals and sends aircraft distress tracking information containing aircraft identification, location and distress events to aircraft operators, air traffic management, search and rescue centers, etc. through the COSPAS-SARSAT system at a rate of at least once per minute.

[0088] Preferably, the ADT computer includes an onboard data processing module, a distress state detection module and a distress transmission triggering module.

[0089] Airborne data processing module: Serves as the ADT computer data input port, processes flight data from the aircraft system, and obtains aircraft status parameters used to detect whether the aircraft is in distress.

[0090] Distress Detection Module: This module uses aircraft status parameters to detect whether the aircraft is in distress. If so, it issues a distress notification and sends distress information, including aircraft identification, location, and distress event information, to the Tracking Information Generation Module.

[0091] Distress Transmission Trigger Module: This module monitors the duration of distress notifications. If the duration exceeds a preset time, it generates a trigger command, triggering autonomous distress tracking operations to generate, transmit, and transmit aircraft distress tracking information. If it is determined that transmission of aircraft distress tracking information is no longer necessary (e.g., the distress status has been resolved), it ceases generating trigger commands.

[0092] Preferably, the distress tracking information transmission unit includes a GNSS navigation receiver, a tracking information generation module, a Beidou short message transceiver, an emergency positioning transmitter ELT and a multi-frequency antenna.

[0093] GNSS Navigation Receiver (GNSS Navigation Receiver Module): This module receives GNSS navigation signals via a multi-frequency antenna to determine the aircraft's position and transmits this information to the Tracking Information Generation Module. It also serves as a backup or supplemental position source if the onboard position source fails.

[0094] Tracking information generation module: Based on the distress information generated by the distress status detection module and the aircraft position information obtained by the GNSS navigation receiver, it generates aircraft distress tracking information containing aircraft identification, aircraft position information and distress events.

[0095] The BeiDou short message transceiver (i.e., command transceiver module) receives trigger commands (tracking trigger commands) from a remote party (e.g., an aircraft operator on the ground) via the BeiDou short message function to trigger the autonomous distress tracking operation described above and trigger the ELT to transmit a distress signal. Furthermore, after the ELT triggers the trigger, it sends a confirmation signal to the remote party.

[0096] Emergency Locator Transmitter (ELT) (i.e., information transmission module): Upon receiving a trigger command (a tracking trigger instruction) from the ADT computer, flight crew, or remote end, it modulates the pre-tracking information and transmits a 121.5MHz and 406MHZ distress signal to COSPAS-SARSAT.

[0097] In this example, the autonomous aircraft distress tracking system also includes power management and battery backup.

[0098] Power Management: Provides power to the ADT computer and the equipment in the Distress Tracking Information Transmission Unit. Specifically, when the onboard power is available, the power management uses the onboard power as the power source and converts the onboard power to power the corresponding equipment. When the onboard power is unavailable, the power management uses the backup battery as the power source to power the corresponding equipment.

[0099] Backup battery: When the onboard power supply is available, it is in a charging state; when the onboard power supply is unavailable, it is in a discharging state.

[0100] The following describes the implementation process of this example:

[0101] During the normal flight phase, the onboard data processing module collects flight data from the aircraft's data bus and processes it from the aircraft's systems to obtain aircraft status parameters. The distress detection module monitors these parameters in real time to identify whether the aircraft is in distress. If the parameters meet the distress criteria, the aircraft is deemed to be in distress, a distress notification is generated, and the aircraft enters the distress phase.

[0102] Aircraft Distress Phase: When distress conditions are met, the distress transmission trigger module determines whether to trigger distress tracking based on the duration of the distress notification. If the distress notification duration exceeds the preset value, the tracking trigger condition is met and the autonomous distress tracking phase begins. If the distress condition is resolved (for example, the aircraft status parameters no longer meet the distress condition), normal flight will resume.

[0103] Autonomous distress tracking phase: When the tracking trigger conditions are met, the distress transmission trigger module sends a trigger command. The aircraft's position information is obtained through the GNSS navigation signal. The tracking information generation module generates aircraft distress tracking information containing the aircraft identification, aircraft position information, and distress events. The ELT transmits 121.5MHz and 406MHZ distress signals (including aircraft distress tracking information) to COSPAS-SARSAT via a multi-frequency antenna. At any stage, the flight crew can manually send a tracking trigger command. After losing contact with the crew, the ground aircraft operator can use the Beidou short message function to remotely initiate a tracking trigger command, including remotely controlling the aircraft's autonomous distress tracking system to generate a tracking trigger command.

[0104] Accident investigation phase: The autonomous distress tracking system will continue to track the distressed aircraft until the aircraft crashes, accurately locate the aircraft's final position, and guide ground search and rescue operations for the distressed aircraft.

[0105] The autonomous aircraft distress tracking system of Example 2 can be used to implement Example 1, and Example 2 can achieve the same beneficial effects as Example 1. The following is an explanation of some of the beneficial effects of Example 2:

[0106] The autonomous aircraft distress tracking system of Example 2 uses an ADT computer to detect whether an aircraft is in distress in real time. It also uses a distress tracking information transmission unit to track distressed aircraft in real time. This system accurately locates the aircraft's flight endpoint, facilitating timely and accurate guidance for ground search and rescue operations for distressed aircraft. By detecting the aircraft's distress status in real time and initiating tracking of the aircraft's position at the initial stage of distress, ground search and rescue personnel can be provided with more comprehensive aircraft location information.

[0107] By integrating a GNSS navigation receiver, the accuracy of aircraft tracking position information is improved, and it serves as a supplementary position source when the onboard position source is lost, thereby improving the accuracy and reliability of position information.

[0108] By integrating a BeiDou short message transceiver, the system provides the ability to remotely or manually initiate distress tracking, enabling autonomous distress tracking operations to be performed via remotely sent or manually controlled tracking trigger commands. This allows for situations where the aircraft cannot activate distress tracking through conventional or automatic means (e.g., due to crew incapacity, component failure, or malfunction) to perform autonomous distress tracking operations, remote activation of the aircraft's autonomous distress tracking can be achieved remotely, by the ground side, or manually via BeiDou short messages.

[0109] The contents not described in detail in the first and second embodiments may be referred to each other, and the above embodiments may be used in combination.

[0110] The foregoing is merely an embodiment of the present invention and is not intended to limit the present application. For those skilled in the art, various modifications and variations may be made to the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included within the scope of the claims of the present application.

Claims

1. An autonomous aircraft distress tracking method, characterized in that: The method comprises: Acquiring flight data, obtaining aircraft status parameters based on the flight data, and determining whether the aircraft is in a distress state based on the aircraft status parameters; If the aircraft is judged to be in distress according to the aircraft status parameters, then determining whether a tracking trigger condition is met; If it is determined that the tracking trigger conditions are met, the autonomous distress tracking operation is performed; The autonomous distress tracking operation includes: Acquire aircraft location information, generate aircraft distress tracking information containing the aircraft location information, and continuously or periodically send the aircraft distress tracking information to a target entity.

2. The method according to claim 1, wherein Determining whether the tracking trigger conditions are met includes: A distress notification is generated, and whether a tracking trigger condition is met is determined based on the duration of the distress notification.

3. The method according to claim 1, wherein Obtaining aircraft position information includes: Satellite navigation information is received through a multi-band antenna, and aircraft position information is obtained based on the flight navigation information.

4. The method according to claim 1, wherein The aircraft distress tracking information also includes aircraft identification and / or distress events.

5. The method according to claim 1, wherein The method further comprises: When the tracking trigger command is obtained, the autonomous distress tracking operation is performed.

6. The method according to claim 5, wherein The tracking trigger instruction is sent from a subject other than the aircraft.

7. The method according to claim 1, wherein Continuously or periodically sending the aircraft distress tracking information to the target entity includes: The aircraft distress tracking information is continuously or periodically transmitted to COSPAS-SARSAT.

8. An autonomous aircraft distress tracking system, characterized in that: The system comprises: An onboard data processing module, configured to acquire flight data and obtain aircraft status parameters based on the flight data; A distress state detection module, configured to determine whether the aircraft is in a distress state based on the aircraft state parameters; a distress transmission trigger module, configured to determine whether a tracking trigger condition is satisfied if the distress state detection module determines that the aircraft is in a distress state; a distress tracking information transmission unit, configured to execute an autonomous distress tracking operation if the distress transmission trigger module determines that a tracking trigger condition is satisfied; The autonomous distress tracking operation includes: Acquire aircraft location information, generate aircraft distress tracking information containing the aircraft location information, and continuously or periodically send the aircraft distress tracking information to a target entity.

9. The system according to claim 8, wherein The distress tracking information transmission unit includes: GNSS navigation receiving module, used to obtain aircraft position information; A tracking information generating module, configured to generate tracking information of the aircraft in distress; The information transmitting module is used to continuously or periodically send the aircraft distress tracking information to the target subject.

10. The system according to claim 8 or 9, characterized in that The system further comprises: The instruction transceiver module is used to obtain a tracking trigger instruction, where the tracking trigger instruction is used to trigger the distress tracking information transmission unit to perform the autonomous distress tracking operation.

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