A task planning method for high and low orbit satellite guidance observation

Abstract

The application discloses a kind of high-low orbit satellite guidance observation-oriented mission planning methods, belong to the field of spaceflight ground system operation and control.The method is directed to high-orbit satellite guides low-orbit satellite observation scene and low-orbit satellite guides high-orbit satellite observation scene, using the chainable period of two satellites of high-low orbit, the observable period of low-orbit satellite to observation target and relevant parameters, mission planning is carried out, the observation period of high-orbit satellite is determined, and the satellite observation sequence combination of high-low orbit satellite guidance observation task is generated.The application can solve the planning problem of high-low orbit satellite mutual guidance observation, can generate the satellite observation sequence combination of actually usable high-low orbit satellite guidance observation task, improve the overall use efficiency of satellite.

Description

Technical Field

[0001] This invention relates to the field of aerospace ground system operation and control, and in particular to a mission planning method for guiding and observing high and low orbit satellites. Background Technology

[0002] Existing remote sensing satellites possess onboard processing capabilities, and the processed results can be transmitted to other satellites via inter-satellite links, guiding them to quickly observe targets. Mutual guidance between high-Earth orbit (HEO) and low-Earth orbit (LEO) satellites offers significant application benefits. HEO satellites can continuously observe the observable area, but the imaging quality is lower. LEO satellites provide higher imaging quality than HEO satellites, but the observation period is shorter. HEO satellites can perform general observations of targets and then guide LEO satellites to complete detailed observations. After observing a target, LEO satellites can also guide HEO satellites to continuously observe the target area, acquiring continuous information.

[0003] In practical satellite operation and control systems, mutual guidance between two satellites requires consideration of factors such as the observable timeframes of both satellites for the target, the timeframe during which inter-satellite links can be established, onboard processing time, and link establishment and transmission time. Furthermore, determining when to activate the high-orbit satellite for observation is another challenging issue in mutual guidance between high and low orbits. Currently, there are no effective solutions to these problems in existing technologies. Summary of the Invention

[0004] In view of this, the present invention provides a mission planning method for high and low orbit satellite-guided observation. The present invention uses the link-establishment time periods of two satellites in high and low orbits, the observable time period of the low-orbit satellite for the observed target, and related parameters to determine the observation time period of the high-orbit satellite for the target, and generates a satellite observation sequence for the high and low orbit satellite-guided observation mission.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A mission planning method for high and low orbit satellite-guided observation includes the following steps:

[0007] Step 1: Obtain the coordinates of the area to be guided for observation, and calculate the observable window set OW of the low-orbit satellite for the area to be guided for observation;

[0008] Step 2: Obtain the orbital elements of the high-orbit and low-orbit satellites that need to guide each other's observations, as well as the installation location of the inter-satellite link antenna and the angle at which the link can be established, and calculate the window set LW for the time period when the link can be established.

[0009] Step 3: For scenarios involving high-orbit satellites guiding low-orbit satellite observations, obtain the duration parameters for each stage of the guidance observation mission chain.

[0010] Step 4: Construct corresponding observation tasks for both the high-orbit satellite guiding low-orbit satellite observation and the low-orbit satellite guiding high-orbit satellite observation mission scenarios.

[0011] Furthermore, the observation area to be guided is the area that can be observed by both high-orbit and low-orbit satellites.

[0012] Furthermore, in step 3, the duration parameters for each stage of the guided observation task chain include:

[0013] Default observation duration △T for high-orbit satellites 高观 The minimum observation time required for high-orbit satellites to observe the area to be guided;

[0014] On-board processing time ΔT for high-orbit satellites 高处 The time from when the high-orbit satellite begins on-board processing of the data for the observation area to be guided, to when it generates the latitude and longitude information of all key targets in the area;

[0015] High-orbit guidance for low-orbit satellite link establishment and transmission time △T 高引低 The time from when a high-orbit satellite begins establishing an inter-satellite link with a low-orbit satellite to when the high-orbit satellite completes the transmission of latitude and longitude information of key targets within the region processed by the high-orbit satellite.

[0016] High-orbit satellite processing time △T 高受 In the scenario of a low-Earth orbit satellite guiding a high-Earth orbit satellite, the time required from when the high-Earth orbit satellite finishes receiving inter-satellite link information to when the high-Earth orbit satellite can start its own observation mission.

[0017] On-board processing time ΔT for low-Earth orbit satellites 低处 The time from the start of onboard processing of data for the observation area by low-Earth orbit satellites to the generation of latitude and longitude information for all key targets within the area;

[0018] Low-Earth orbit guiding high-Earth orbit satellite link establishment and transmission time △T 低引高 The time from the establishment of an inter-satellite link between a low-Earth orbit satellite and a high-Earth orbit satellite to the completion of the transmission of latitude and longitude information of key targets within the region processed by the low-Earth orbit satellite;

[0019] Low Earth Orbit Satellite Acceptance Time △T 低受 In a scenario where a high-orbit satellite guides a low-orbit satellite, the time required from when the low-orbit satellite finishes receiving inter-satellite link information to when it can initiate its own observation mission.

[0020] Furthermore, in step 4, for the mission scenario of a high-orbit satellite guiding a low-orbit satellite for observation, the specific method is as follows:

[0021] (411) Traverse each window OW in the observable window set OW. i Extract OW iStarting at time T1, push time T1 forward by ΔT. 低受 +△T 高引低 The duration is calculated using T1-△T. 低受 -△T 高引低 As the period for high-orbit guidance of low-orbit link establishment L 高引低 The start time, in addition, push time T1 forward by △T 低受 Duration, using T1-△T 低受 L, as the period for high-orbit guidance of low-orbit link establishment 高引低 At the end time, L is generated. 高引低 Time period;

[0022] (412) Initialize an empty set of windows for generating bootstrap tasks, HLW; iterate through each window in the set of chainable time windows, LW. i Determine LW i Does it contain L? 高引低 The time period is determined by the logic of LW. i The start time is earlier than L 高引低 The start time, and LW i The end time is later than L 高引低 The end time; if there is LW i Includes L 高引低 Then OW i Add the HLW set that can generate boot task windows, if no LW is available. i Includes L 高引低 If so, the planning will yield no results;

[0023] (413) Traverse the set of bootstrap task windows HLW that can be generated, and for each window HLW i Extract the start time T, and push time T forward by ΔT. 高观 +△T 高处 +△T 低受 +△T 高引低 The duration is determined using T-△T. 高观 -△T 高处 -△T 低受 -△T 高引低 As the starting point of the high-orbit observation mission, time T is also pushed forward by ΔT. 高处 +△T 低受 +△T 高引低 The duration is determined using T-△T. 高处 -△T 低受 -△T 高引低 The high-orbit observation mission window HT is generated as the end point of the high-orbit observation mission.

[0024] (414) HT and HLW iTogether, they form a sequence of high-orbit satellite-guided low-orbit satellite observation missions to complete the mission planning for high-orbit satellite-guided low-orbit satellite observations.

[0025] Furthermore, in step 4, for the mission scenario of low-orbit satellites guiding high-orbit satellite observations, the specific method is as follows:

[0026] (421) Traverse each window OW in the observable window set OW. i Extract OW i The end time T2 is pushed forward by ΔT. 低处 The duration is calculated using T2+△T. 低处 L, as the period for low-orbit guidance of high-orbit link establishment 低引高 The start time, and in addition, the time T2 is pushed back by △T. 低处+ △T 低引高 The duration is calculated using T2+△T. 低处+ △T 低引高 L, as the period for low-orbit guidance of high-orbit link establishment 低引高 At the end time, L is generated. 低引高 Time period;

[0027] (422) Initialize an empty set of windows for generating bootstrap tasks, LHW; iterate through each window LW within the set of chainable time slot windows, LHW. i Determine LW i Does it contain L? 低引高 The time period is determined by the logic of LW. i The start time is earlier than L 低引高 The start time, and LW i The end time is later than L 低引高 The end time; if there is LW i Includes L 低引高 Then OW i Add the LHW set that can generate boot task windows, if LW is not available. i Includes L 低引高 If so, the planning will yield no results;

[0028] (423) Traversing the generated bootstrap task window set LHW, for each window LHW i Extract the start time T, and push time T forward by ΔT. 低处 +△T 低引高 +△T 高受 The duration is calculated using T+△T. 低处 +△T 低引高 +△T 高受 As the starting point of the high-orbit observation mission, time T is further pushed back by ΔT. 低处 +△T 低引高 +△T 高受 +△T高观 The duration is calculated using T+△T. 低处 +△T 低引高 +△T 高受 +△T 高观 The high-orbit observation mission window HT is generated as the end point of the high-orbit observation mission.

[0029] (424) Combine HT with LHW i Together, they form a sequence of low-Earth orbit satellites guiding high-Earth orbit satellite observations, thus completing the mission planning for low-Earth orbit satellites guiding high-Earth orbit satellite observations.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] 1. This invention uses the link-establishment time period of two satellites in high and low orbits, the observable time period of the low orbit satellite for the observation target, and related parameters to solve the problem of the difficulty in determining the observation time period of the high orbit satellite in the mutual guidance observation process between high and low orbits, and can generate a combination of satellite observation sequences for practically usable high and low orbit satellite guidance observation tasks.

[0032] 2. This invention solves the planning problem of mutual guidance observation between high and low orbit satellites, enabling the generation of usable satellite observation sequences for high and low orbit satellite guidance observation missions in practical engineering applications, thereby improving the overall utilization efficiency of satellites. Attached Figure Description

[0033] Figure 1 This is a timing diagram of high-orbit satellite guiding low-orbit satellite observation in this invention.

[0034] Figure 2 This is a timing diagram of low-orbit satellite guiding high-orbit satellite observations in this invention. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings.

[0036] A mission planning method for high and low orbit satellite-guided observation is proposed. This method is designed for scenarios where high orbit satellites guide low orbit satellite observation and low orbit satellites guide high orbit satellite observation. It uses the link-establishment time period between the two high and low orbit satellites, the observable time period of the low orbit satellite for the observation target, and related parameters to perform mission planning, determine the observation time period of the high orbit satellite, and generate a combination of satellite observation sequences for high and low orbit satellite-guided observation missions.

[0037] The specific steps are as follows:

[0038] (1) Obtain the coordinates of the observation area to be guided, and calculate the observable window set OW of the low-orbit satellite for the observation area;

[0039] (2) Obtain the orbital elements of the high-orbit and low-orbit satellites that need to guide each other's observations, as well as the installation position of the inter-satellite link antenna and the angle at which the link can be established, and calculate the set of time windows for establishing the link LW;

[0040] (3) For scenarios involving high-orbit satellites guiding low-orbit satellite observations, obtain the duration parameters of each stage of the guidance observation mission chain, including:

[0041] Default observation duration △T for high-orbit satellites 高观 The minimum observation time required for high-orbit satellites to observe the area to be guided;

[0042] On-board processing time ΔT for high-orbit satellites 高处 The time from when the high-orbit satellite begins on-board processing of the data for the observation area to be guided, to when it generates the latitude and longitude information of all key targets in the area;

[0043] High-orbit guidance for low-orbit satellite link establishment and transmission time △T 高引低 The time from when a high-orbit satellite begins establishing an inter-satellite link with a low-orbit satellite to when the high-orbit satellite completes the transmission of latitude and longitude information of key targets within the region processed by the high-orbit satellite.

[0044] High-orbit satellite processing time △T 高受 In the scenario of a low-Earth orbit satellite guiding a high-Earth orbit satellite, the time required from when the high-Earth orbit satellite finishes receiving inter-satellite link information to when the high-Earth orbit satellite can start its own observation mission.

[0045] On-board processing time ΔT for low-Earth orbit satellites 低处 The time from the start of onboard processing of data for the observation area by low-Earth orbit satellites to the generation of latitude and longitude information for all key targets within the area;

[0046] Low-Earth orbit guiding high-Earth orbit satellite link establishment and transmission time △T 低引高 The time from the establishment of an inter-satellite link between a low-Earth orbit satellite and a high-Earth orbit satellite to the completion of the transmission of latitude and longitude information of key targets within the region processed by the low-Earth orbit satellite;

[0047] Low Earth Orbit Satellite Acceptance Time △T 低受 In the scenario of high-orbit satellite guiding low-orbit satellite missions, the time required from when the low-orbit satellite finishes receiving inter-satellite link information to when the low-orbit satellite can start its own observation mission.

[0048] (4) Construct corresponding observation tasks for the mission scenarios of high-orbit satellites guiding low-orbit satellite observations and low-orbit satellites guiding high-orbit satellite observations;

[0049] Mission scenarios for guiding low-orbit satellite observations from high-orbit satellites (see executable timing) Figure 1 The method is as follows;

[0050] (411) Traverse each OW in the observable window set OW i Extract OW i Starting at time T1, push time T1 forward (△T) 低受 +△T 高引低 Duration, i.e., using (T1-△T) 低受 -△T 高引低 (L) as the period for establishing links between high-orbit and low-orbit orbits 高引低 At the beginning, push time T1 forward by △T. 低受 Duration, i.e., using (T1-△T) 低受 (L) as the period for establishing links between high-orbit and low-orbit orbits 高引低 At the end time, L is generated. 高引低 Time period;

[0051] (412) Traverse each LW in the set of linkable time windows LW i Determine LW i Does it contain L? 高引低 The time period is determined by the logic of LW. i The start time of the time period is earlier than L. 高引低 The start time of the time period, and LW i The time period ends later than L 高引低 End time of the time period; if there is LW i The time period includes L 高引低 Then OW i Add the HLW set that can generate boot task windows, if no LW is available. i The time period includes L 高引低 If so, the planning will yield no results;

[0052] (413) Traverse the generated bootstrap task window set HLW and extract the HLW. i Starting at time T, push time T forward (ΔT) 高观 +△T 高处 +△T 低受 +△T 高引低 Duration, i.e., using (T-△T) 高观 -△T 高处 -△T 低受 -△T 高引低 As the start time of the high-orbit observation mission, time T is pushed forward by (△T). 高处 +△T 低受 +△T 高引低 Duration, i.e., using (T-△T) 高处 -△T 低受 -△T 高引低 The high-orbit observation mission window HT is generated as the end time of the high-orbit observation mission.

[0053] (414) HT and HLW iTogether, they form a sequence of high-orbit satellite-guided low-orbit satellite observation missions to complete the mission planning for high-orbit satellite-guided low-orbit satellite observations.

[0054] Mission scenarios for guiding high-orbit satellite observations from low-orbit satellites (see executable timing) Figure 2 The method is as follows;

[0055] (421) Traverse each OW in the observable window set OW i Extract OW i At the end time T2, push time T2 forward by △T. 低处 Duration, i.e., using (T2+△T) 低处 L, as the period for establishing links between low-Earth orbit and high-Earth orbit. 低引高 At the beginning, time T2 is pushed back (△T) 低处+ △T 低引高 The duration is (T2 + △T) 低处+ △T 低引高 L, as the period for establishing links between low-Earth orbit and high-Earth orbit. 低引高 At the end time, L is generated. 低引高 Time period;

[0056] (422) Traverse each LW in the set of linkable time windows LW i Determine LW i Does it contain L? 低引高 The time period is determined by the logic of LW. i The start time of the time period is earlier than L. 低引高 The start time of the time period, and LW i The time period ends later than L 低引高 End time of the time period; if there is LW i The time period includes L 低引高 Then OW i Add the LHW set that can generate boot task windows, if LW is not available. i The time period includes L 低引高 If so, the planning will yield no results;

[0057] (423) Traverse the generated bootstrap task window set LHW and extract the LHW i Starting at time T, push time T forward (ΔT) 低处 +△T 低引高 +△T 高受 Duration, i.e., using (T+△T) 低处 +△T 低引高 +△T 高受 As the start time of the high-orbit observation mission, time T is pushed back (ΔT). 低处 +△T 低引高 +△T 高受 +△T 高观Duration, i.e., using (T+△T) 低处 +△T 低引高 +△T 高受 +△T 高观 The high-orbit observation mission window HT is generated as the end time of the high-orbit observation mission.

[0058] (424) Combine HT with LHW i Together, they form a sequence of low-Earth orbit satellites guiding high-Earth orbit satellite observations, thus completing the mission planning for low-Earth orbit satellites guiding high-Earth orbit satellite observations.

[0059] This invention is applicable to scenarios where high-orbit and low-orbit satellites guide each other to observe the same target. It can quickly complete mission planning and generate a combination of satellite observation sequences for high- and low-orbit satellite-guided observation missions by using the link-establishment period between the two satellites, the observable period of the low-orbit satellite for the observed target, and related parameters.

Claims

1. A mission planning method for high and low orbit satellite-guided observation, characterized in that, Includes the following steps: Step 1: Obtain the coordinates of the area to be guided for observation, and calculate the observable window set OW of the low-orbit satellite for the area to be guided for observation; Step 2: Obtain the orbital elements of the high-orbit and low-orbit satellites that need to guide each other's observations, as well as the installation location of the inter-satellite link antenna and the angle at which the link can be established, and calculate the window set LW for the time period when the link can be established. Step 3: For scenarios involving high-orbit satellites guiding low-orbit satellite observations, obtain the duration parameters for each stage of the guidance observation mission chain, including: Default observation duration △T for high-orbit satellites 高观 The minimum observation time required for high-orbit satellites to observe the area to be guided; On-board processing time ΔT for high-orbit satellites 高处 The time from when the high-orbit satellite begins on-board processing of the data for the observation area to be guided, to when it generates the latitude and longitude information of all key targets in the area; High-orbit guidance for low-orbit satellite link establishment and transmission time △T 高引低 The time from when a high-orbit satellite begins establishing an inter-satellite link with a low-orbit satellite to when the high-orbit satellite completes the transmission of latitude and longitude information of key targets within the region processed by the high-orbit satellite. High-orbit satellite processing time △T 高受 In the scenario of a low-Earth orbit satellite guiding a high-Earth orbit satellite, the time required from when the high-Earth orbit satellite finishes receiving inter-satellite link information to when the high-Earth orbit satellite can start its own observation mission. On-board processing time ΔT for low-Earth orbit satellites 低处 The time from the start of onboard processing of data for the observation area by low-Earth orbit satellites to the generation of latitude and longitude information for all key targets within the area; Low-Earth orbit guiding high-Earth orbit satellite link establishment and transmission time △T 低引高 The time from the establishment of an inter-satellite link between a low-Earth orbit satellite and a high-Earth orbit satellite to the completion of the transmission of latitude and longitude information of key targets within the region processed by the low-Earth orbit satellite; Low Earth Orbit Satellite Acceptance Time △T 低受 In the scenario of high-orbit satellite guiding low-orbit satellite missions, the time required from when the low-orbit satellite finishes receiving inter-satellite link information to when the low-orbit satellite can start its own observation mission. Step 4: For mission scenarios where high-orbit satellites guide low-orbit satellite observations and low-orbit satellites guide high-orbit satellite observations, construct corresponding observation tasks respectively; the specific methods are as follows: (411) Traverse each window OW in the observable window set OW. i Extract OW i Starting at time T1, push time T1 forward by ΔT. 低受 +△T 高引低 The duration is calculated using T1-△T. 低受 -△T 高引低 L, as the period for high-orbit guidance of low-orbit link establishment 高引低 The start time, in addition, push time T1 forward by △T 低受 Duration, using T1-△T 低受 L, as the period for high-orbit guidance of low-orbit link establishment 高引低 At the end time, L is generated. 高引低 Time period; (412) Initialize an empty set of windows for generating bootstrap tasks, HLW; iterate through each window in the set of chainable time windows, LW. i Determine LW i Does it contain L? 高引低 The time period is determined by the logic of LW. i The start time is earlier than L 高引低 The start time, and LW i The end time is later than L 高引低 The end time; if there is LW i Includes L 高引低 Then OW i Add the HLW set that can generate boot task windows, if no LW is available. i Includes L 高引低 If so, the planning will yield no results; (413) Traverse the set of bootstrap task windows HLW that can be generated, and for each window HLW i Extract the start time T, and push time T forward by ΔT. 高观 +△T 高处 +△T 低受 +△T 高引低 The duration is determined using T-△T. 高观 -△T 高处 -△T 低受 -△T 高引低 As the starting point of the high-orbit observation mission, time T is also pushed forward by ΔT. 高处 +△T 低受 +△T 高引低 The duration is determined using T-△T. 高处 -△T 低受 -△T 高引低 The high-orbit observation mission window HT is generated as the end point of the high-orbit observation mission. (414) HT and HLW i Together, they form a sequence of high-orbit satellite-guided low-orbit satellite observation missions to complete the mission planning for high-orbit satellite-guided low-orbit satellite observations. (421) Traverse each window OW in the observable window set OW. i Extract OW i The end time T2 is pushed forward by ΔT. 低处 The duration is calculated using T2+△T. 低处 L, as the period for low-orbit guidance of high-orbit link establishment 低引高 The start time, and in addition, the time T2 is pushed back by △T. 低处+ △T 低引高 The duration is calculated using T2+△T. 低处+ △T 低引高 L, as the period for low-orbit guidance of high-orbit link establishment 低引高 At the end time, L is generated. 低引高 Time period; (422) Initialize an empty set of windows for generating bootstrap tasks, LHW; iterate through each window LW within the set of chainable time slot windows, LHW. i Determine LW i Does it contain L? 低引高 The time period is determined by the logic of LW. i The start time is earlier than L 低引高 The start time, and LW i The end time is later than L 低引高 The end time; if there is LW i Includes L 低引高 Then OW i Add the LHW set that can generate boot task windows, if LW is not available. i Includes L 低引高 If so, the planning will yield no results; (423) Traversing the generated bootstrap task window set LHW, for each window LHW i Extract the start time T, and push time T forward by ΔT. 低处 +△T 低引高 +△T 高受 The duration is calculated using T+△T. 低处 +△T 低引高 +△T 高受 As the starting point of the high-orbit observation mission, time T is further pushed back by ΔT. 低处 +△T 低引高 +△T 高受 +△T 高观 The duration is calculated using T+△T. 低处 +△T 低引高 +△T 高受 +△T 高观 The high-orbit observation mission window HT is generated as the end point of the high-orbit observation mission. (424) Combine HT with LHW i Together, they form a sequence of low-Earth orbit satellites guiding high-Earth orbit satellite observations, thus completing the mission planning for low-Earth orbit satellites guiding high-Earth orbit satellite observations.

2. The mission planning method for high and low orbit satellite guidance and observation according to claim 1, characterized in that, The area to be guided for observation is the area that can be observed by both high-orbit and low-orbit satellites.

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