CN-121734690-B - Task planning method for high-low orbit satellite guiding observation

CN121734690BCN 121734690 BCN121734690 BCN 121734690BCN-121734690-B

Abstract

The invention discloses a mission planning method for high-low orbit satellite guiding observation, and belongs to the field of space ground system operation and control. Aiming at a high-orbit satellite guiding low-orbit satellite observation scene and a low-orbit satellite guiding high-orbit satellite observation scene, the method adopts a chain-building period of two high-orbit satellites and low-orbit satellites, an observable period of the low-orbit satellites on an observation target and related parameters to conduct task planning, determines the high-orbit satellite observation period and generates a satellite observation sequence combination of high-orbit satellite guiding observation tasks and low-orbit satellite guiding observation tasks. The method can solve the planning problem of the mutual guiding and observing of the high-low orbit satellites, can generate the satellite observation sequence combination of the practical available high-low orbit satellite guiding and observing tasks, and improves the overall use efficiency of the satellites.

Inventors

ZHANG DONG
LANG SHAOBO
CHEN JINYONG
LIN XIAOYONG
GUO ZHENZHEN
ZHAO CHAO

Assignees

中国电子科技集团公司第五十四研究所

Dates

Publication Date: 20260512
Application Date: 20260227

Claims (2)

1. The task planning method for high-low orbit satellite guiding observation is characterized by comprising the following steps of: step 1, acquiring coordinates of an observation area to be guided, and calculating an observable window set OW of the observation area to be guided of a low orbit satellite; Step 2, obtaining the orbit numbers of the high-orbit satellite and the low-orbit satellite which need to be mutually guided and observed, and the installation position and the chain-building angle of the inter-satellite link antenna, and calculating a chain-building time period window set LW; step 3, aiming at a scene task observed by a high-orbit satellite guiding low-orbit satellite, acquiring time length parameters of each link required by a guiding observation task chain, wherein the step comprises the following steps: the default observation time length DeltaT High-looking of the high orbit satellite is the shortest observation time length required by the high orbit satellite to observe the observation area to be guided; the on-satellite processing time length delta T High place is the time length from the start of on-satellite processing of the data of the observation area to be guided by the high-orbit satellite to the generation of longitude and latitude information of all key targets in the area; the high orbit guiding low orbit satellite chain building transmission time length delta T High and low leading is the time length from the establishment of an inter-satellite link with the low orbit satellite to the completion of the transmission of longitude and latitude information of a key target in an area processed by the high orbit satellite; The high-orbit satellite receiving time length DeltaT High stress is the time length from the time when the high-orbit satellite receives the inter-satellite link information to the time when the high-orbit satellite can start the self-observation task in the low-orbit satellite guiding high-orbit satellite task scene; The processing time length delta T Low place on the low orbit satellite is the time length from the start of the on-satellite processing of the data of the observation area to be guided by the low orbit satellite to the generation of the longitude and latitude information of all key targets in the area; the link establishment transmission time length DeltaT low height of leading of the low-orbit guiding high-orbit satellite is the time length from the start of the low-orbit satellite to the establishment of an inter-satellite link with the high-orbit satellite to the completion of the transmission of longitude and latitude information of a key target in a region processed by the low-orbit satellite; The low-orbit satellite receiving time length DeltaT Low exposure to is the time length from the time when the low-orbit satellite receives inter-satellite link information to the time when the low-orbit satellite can start the self-observation task in the high-orbit satellite guiding low-orbit satellite task scene; Step 4, respectively constructing corresponding observation tasks aiming at a task scene observed by a high-orbit satellite guiding low-orbit satellite and a task scene observed by the low-orbit satellite guiding high-orbit satellite, wherein the specific modes are as follows: (411) Traversing each window OW i in the observable window set OW, extracting a starting time T1 of OW i , forward pushing the time T1 by DeltaT Low exposure to +△T High and low leading , using T1-DeltaT Low exposure to -△T High and low leading as a starting time of a high-rail guiding low-rail building chain period L High and low leading , and further forward pushing the time T1 by DeltaT Low exposure to , using T1-DeltaT Low exposure to as an ending time of the high-rail guiding low-rail building chain period L High and low leading , and generating a L High and low leading period; (412) Traversing each window LW i in the window set LW of the configurable link time period, judging whether LW i contains L High and low leading time period, judging that the starting time of LW i is earlier than the starting time of L High and low leading and the ending time of LW i is later than the ending time of L High and low leading ; (413) Traversing can generate a guiding task window set HLW, extracting a starting time T for each window HLW i , pushing forward the T time by DeltaT High-looking +△T High place +△T Low exposure to +△T High and low leading , using T-DeltaT High-looking -△T High place -△T Low exposure to -△T High and low leading as the starting time of a high-track observation task, and further, pushing forward the T time by DeltaT High place +△T Low exposure to +△T High and low leading , using T-DeltaT High place -△T Low exposure to -△T High and low leading as the ending time of the high-track observation task, and generating a high-track observation task window HT; (414) Combining HT and HLW i together to form a high-orbit satellite-guided low-orbit satellite observation task sequence to complete task planning of high-orbit satellite-guided low-orbit satellite observation; (421) Traversing each window OW i in the observable window set OW, extracting the end time T2 of the OW i , pushing the time T2 backwards by DeltaT Low place , using T2+ DeltaT Low place as the start time of the low-rail guide high-rail link establishment period L low height of leading , and in addition, pushing the time T2 backwards by DeltaT Low place + △T low height of leading , using T2+ DeltaT Low place + △T low height of leading as the end time of the low-rail guide high-rail link establishment period L low height of leading , and generating the L low height of leading period; (422) Traversing each window LW i in the set of windows LW of the configurable link time period, determining if LW i contains L low height of leading time period, determining if the start time of LW i is earlier than the start time of L low height of leading and the end time of LW i is later than the end time of L low height of leading ; (423) Traversing can generate a set LHW of guide task windows, for each window LHW i , extracting a start time T, pushing back the T time by Δt Low place +△T low height of leading +△T High stress , using t+Δt Low place +△T low height of leading +△T High stress as the start time of the high-track observation task, and in addition, pushing back the T time by Δt Low place +△T low height of leading +△T High stress +△T High-looking , using t+Δt Low place +△T low height of leading +△T High stress +△T High-looking as the end time of the high-track observation task, generating a high-track observation task window HT; (424) And combining HT and LHW i together to form a low-orbit satellite-guided high-orbit satellite observation task sequence, and completing task planning of low-orbit satellite-guided high-orbit satellite observation.
2. The mission planning method for guiding and observing high and low orbit satellites according to claim 1, wherein the observation area to be guided is a common observable area of the high orbit satellites and the low orbit satellites.

Description

Task planning method for high-low orbit satellite guiding observation Technical Field The invention relates to the field of space ground system operation control, in particular to a mission planning method for high-low orbit satellite guiding observation. Background The existing remote sensing satellites have on-board processing capability, and processing results can be transmitted to other satellites through inter-satellite links to guide the other satellites to quickly observe targets. The high-low orbit satellites are mutually guided, so that the method has good application benefits. High orbit satellites can continuously observe an observable area without interruption, but have lower imaging quality. The low orbit satellites have higher imaging quality for the observable area than the high orbit satellites, but have shorter period of observability. The high-orbit satellites may profile the target and then direct the low-orbit satellites to complete detailed observations. After the low-orbit satellite observes the target, the high-orbit satellite can be guided to continuously observe the target area to acquire continuous information. In an actual satellite operation control system, the mutual guidance of two satellites needs to consider the observable time period of the two satellites to a target, the time period of the two satellites mutually establishing inter-satellite links, the processing time length on the satellites, the link establishment transmission time length and other factors. In addition, when the high orbit satellite is started up for observation is also a problem to be considered when the high orbit satellite guides the high orbit satellite to the low orbit satellite. Currently, there is no effective solution to these problems in the prior art. Disclosure of Invention In view of the above, the invention provides a mission planning method for high-low orbit satellite guiding observation. The invention adopts the chain-building time period of the high-low orbit two satellites, the observable time period of the low orbit satellite to the observed target and related parameters to determine the target observed time period of the high orbit satellite, and generates a satellite observation sequence of the high-low orbit satellite guiding observation task. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a mission planning method for high-low orbit satellite guiding observation comprises the following steps: step 1, acquiring coordinates of an observation area to be guided, and calculating an observable window set OW of the observation area to be guided of a low orbit satellite; Step 2, obtaining the orbit numbers of the high-orbit satellite and the low-orbit satellite which need to be mutually guided and observed, and the installation position and the chain-building angle of the inter-satellite link antenna, and calculating a chain-building time period window set LW; step 3, aiming at a scene task observed by a high-orbit satellite guiding low-orbit satellite, acquiring time length parameters of each link required by a guiding observation task chain; And 4, respectively constructing corresponding observation tasks aiming at a task scene of high-orbit satellite guiding low-orbit satellite observation and a task scene of low-orbit satellite guiding high-orbit satellite observation. Further, the observation area to be guided is an observation area commonly available for high-orbit satellites and low-orbit satellites. Further, in step 3, the time length parameters of each link required for guiding the observation task chain include: the default observation time length DeltaT High-looking of the high orbit satellite is the shortest observation time length required by the high orbit satellite to observe the observation area to be guided; the on-satellite processing time length delta T High place is the time length from the start of on-satellite processing of the data of the observation area to be guided by the high-orbit satellite to the generation of longitude and latitude information of all key targets in the area; the high orbit guiding low orbit satellite chain building transmission time length delta T High and low leading is the time length from the establishment of an inter-satellite link with the low orbit satellite to the completion of the transmission of longitude and latitude information of a key target in an area processed by the high orbit satellite; The high-orbit satellite receiving time length DeltaT High stress is the time length from the time when the high-orbit satellite receives the inter-satellite link information to the time when the high-orbit satellite can start the self-observation task in the low-orbit satellite guiding high-orbit satellite task scene; The processing time length delta T Low place on the low orbit satellite is the time length from the start of the on-satellite processing of the data of the observation