CN-120150764-B - Distributed multi-curved-surface-array full-airspace beam continuous control method

CN120150764BCN 120150764 BCN120150764 BCN 120150764BCN-120150764-B

Abstract

The invention discloses a distributed multi-curved-surface-array full-airspace beam continuous control method which comprises the steps of setting triggering events of satellite measurement and control relay, wherein the triggering basis comprises uplink and downlink state monitoring conditions of satellites and measurement and control stations, an orbit control instruction and a pre-configured switching condition triggering instruction, taking a random access node as a control core of the satellite measurement and control relay, utilizing a curved-surface-array tracking receiver state parameter and cached partial satellite orbit information, and adaptively triggering a beam switching process between curved-surface arrays based on the measurement and control relay triggering events, so that the continuous tracking of the curved-surface arrays on the satellites is ensured. The invention can realize the continuous control of the distributed multi-curved-surface array full airspace wave beam with low time delay and low measurement and control resource expense, support the low time delay measurement and control relay requirement of satellites in a large-scale constellation in the future, realize the switching according to the requirement without pre-planning, realize the optimal real-time capability, and improve the adaptability to the dynamic change of the station network resources and the satellite motion state.

Inventors

LIU TIAN
ZHANG YI
YANG LINJIE

Assignees

中国电子科技集团公司第十研究所

Dates

Publication Date: 20260512
Application Date: 20250314

Claims (6)

1. A distributed multi-curved-surface-array full airspace beam continuous control method is characterized by comprising the following steps: Setting a triggering event of satellite measurement and control relay, wherein the triggering basis comprises a satellite and measurement and control station uplink and downlink state monitoring condition, an orbit control instruction and a pre-configured switching condition triggering instruction; The random access node is used as a control core of satellite measurement and control relay, the state parameters of a curved array tracking receiver and part of cached satellite orbit information are utilized, the beam switching process between the curved arrays is adaptively triggered based on a measurement and control relay triggering event, and the continuous tracking of the curved array to the satellite is ensured, and the method comprises the following steps: Step 1, a curved array A monitors a downlink measurement and control link and packages received satellite uplink measurement and control link monitoring information and sends the information to an random access node A; Step 2, the random access node A executes local relay decision and dynamically selects the optimal relay curved surface array B according to the received measurement report/track control report/pre-configured switching trigger report, or executes cross-domain relay decision and searches the optimal random access node B so that the optimal random access node B selects the optimal relay curved surface array B from the curved surface arrays managed by the random access node B; Step 3, sending a user data transmission stopping instruction to the measurement and control baseband resource pool along with the access node A, and immediately stopping and caching the user data by the measurement and control baseband resource pool; Step 4, when executing local relay decision, the relay configuration information is respectively issued to the satellite, the curved surface array A and the curved surface array B along with the access node A, when executing cross-domain relay decision, the relay configuration information is issued to the curved surface array B and the relay configuration information along with the access node B, and then the relay configuration information is issued to the satellite and the curved surface array A along with the access node A; step 5, the curved surface array B sends tracking state inquiry information to the curved surface array A; Step 6, the curved array A transmits the state parameters of the self-tracking receiver and the cached satellite orbit information to the curved array B through the tracking state inquiry response message; Step 7, the curved array B configures the self-tracking receiver state and the beam pointing according to the received tracking state inquiry response message; step 8, after the establishment of the uplink and downlink between the satellite and the curved array B is completed at the preset relay moment, the satellite sends a link locking message to the curved array B to prompt the curved array B to complete relay; Step 9, when executing local relay decision, the curved surface array B sends relay success confirmation information to the following access node A, when executing cross-domain relay decision, the curved surface array B sends relay success confirmation information to the following access node B, and the following access node B forwards the relay success confirmation information to the satellite and the curved surface array A through the following access node A; step 10, when executing local relay decision, initiating a route switching request to a measurement and control baseband resource pool along with an access node A; Step 11, when executing local relay decision, the measurement and control baseband resource pool, the random access node A and the curved array B finish route switching together, and a transmission link from the measurement and control baseband resource pool to the curved array B is established; Step 12, when executing local relay decision, the measurement and control baseband resource pool issues a route switching confirmation message to the random access node A and the curved surface array B, which indicates that the route switching is completed; when executing the cross-domain relay decision, the measurement and control baseband resource pool issues a route switching confirmation message to the random access node A, the random access node B and the curved array B, which indicates that the route switching is completed; Step 13, when executing local relay decision, the random access node A issues a measurement and control link release instruction to the curved array A, when executing cross-domain relay decision, the random access node A releases the random access link between the random access node A and the satellite, and then issues a measurement and control link release instruction to the curved array A; and 14, after the measurement and control link is released, the curved array A sends measurement and control link release information to the random access node A.
2. The method for continuously controlling all-airspace beams of a distributed multi-curved-surface array according to claim 1, wherein in the step 1, the measurement and control center schedules the measurement and control station to finish the phase calibration of the under-jurisdiction curved-surface array when in leisure, and the curved-surface array stores the phase calibration result between the curved-surface arrays with adjacent relations with the curved-surface array.
3. The method for continuously controlling the full airspace wave beam of the distributed multi-curved-surface array according to claim 2, wherein the method for calibrating the phase between different curved-surface arrays comprises the steps that the measurement and control center schedules two different curved-surface arrays to which two measurement and control stations belong to receive the same satellite signal, and the phase calibration of the follow-up curved-surface array is realized based on the phase difference of the received signals of the two curved-surface arrays.
4. The method according to claim 1, wherein the relay configuration information includes information necessary for relay, wherein the relay configuration information of the satellite includes frequency points, spreading codes, modulation and coding parameters, and relay time, and the relay configuration information of the satellite, the curved array a, and the curved array B are not necessarily identical to each other.
5. The method for continuously controlling all airspace beams of a distributed multi-curved-surface array according to claim 1, wherein in step 5, the tracking state query message sent by the curved-surface array B to the curved-surface array a includes part of satellite orbit information cached by the curved-surface array a and the state parameters of the tracking receiver of the curved-surface array a, so as to assist the curved-surface array B in achieving rapid acquisition and tracking of satellites.
6. The method for continuously controlling the full airspace beam of the distributed multi-curved array according to claim 1, wherein the steps 5 and 6 support two interaction modes: The method 1 comprises the steps of executing the step 5 and the step6 once between the curved surface arrays A, B, and automatically resolving the state and the beam direction of the self-tracking receiver at the subsequent relay moment by the curved surface array B according to the tracking state response message obtained in the step 6; The method 2 is that tracking state information interaction in the step 5 and the step 6 is continuously executed between the curved surface arrays A, B, and the curved surface arrays A, B achieve tracking receiver state synchronization and achieve pre-tracking of the curved surface arrays B on satellites.

Description

Distributed multi-curved-surface-array full-airspace beam continuous control method Technical Field The invention relates to the technical field of satellite measurement and control, in particular to a distributed multi-curved-surface-array full-airspace beam continuous control method. Background In recent years, the development of low-orbit satellites has received a great deal of attention. Advantages of low orbit satellites include wide coverage, low transmission delay, low link loss, flexible transmission, low manufacturing cost, and safe and reliable operation. Of these, spaceX's star chain is the most well known example. The project plan transmits about 1.2 ten thousand satellites to provide high-speed internet services covering the world. In addition, china is also actively propelling low-orbit satellite projects, e.g., a thousand sail constellation, which would consist of about 1.5 ten thousand low-orbit commercial satellites. In the traditional measurement and control system, the measurement and control system mainly comprises satellites, measurement and control stations and a measurement and control center. The measurement and control tasks are obtained by the measurement and control center through centralized planning according to the orbit information of the satellite and are uniformly issued to each measurement and control station. The issued scheduling plan contains relay necessary information such as relay time between measurement and control stations, satellite orbit information and the like. In recent years, in order to support increasingly complex measurement and control tasks, support of satellite random access is realized, random access nodes are introduced into a measurement and control system, and control surface separation of the measurement and control system is primarily realized. And a data interaction channel exists between the random access node and the satellite, and the measurement and control station and the measurement and control center are used for realizing the efficient interaction of control signaling. In addition, in order to improve the utilization efficiency and flexibility of measurement and control resources, the flexible expansion of capacity is supported, the method is suitable for dynamic changes of different service scenes, and the measurement and control station gradually adopts a cloud architecture to realize the virtualization of measurement and control functions. The physical baseband resources are virtualized into a pool of measurement and control baseband resources. Even so, the traditional measurement and control system still has difficulty in adapting to the new measurement and control situation under the increasing popularization trend of low-rail commercial constellations. In other words, the explosive growth of the number of low-orbit satellites presents a significant challenge to current pre-planned-based satellite measurement and control systems. The method mainly comprises the steps of (1) greatly improving the solving complexity of an optimization problem corresponding to the pre-planning caused by the abrupt increase of the satellite scale, (2) not adapting to the dynamic change of constellation topology and station network resources based on the pre-planned satellite scheduling, and not timely responding to satellite orbit emergency, and (3) adjusting the measurement and control beam to a designated position by a relay measurement and control station in advance for a plurality of minutes in the pre-planning, wherein the waiting time is long, and the measurement and control resource waste exists. (4) In the relay process, a tracking receiver has larger loop locking time, so that the actual interruption time of the measurement and control service is increased. Disclosure of Invention In order to solve the problems that the timeliness of the traditional satellite measurement and control relay system based on pre-planning is reduced due to the explosive growth of the low orbit satellite constellation scale, the service interruption time is long, the dynamic change of the constellation topology and the station network resources cannot be adapted, and the like, the invention provides a distributed multi-curved-surface-array full-airspace beam continuous control method, which can realize the distributed multi-curved-surface-array full-airspace beam continuous control with low time delay and low measurement and control resource expense, support the low time delay measurement and control relay requirements of satellites in a large-scale constellation in the future, realize the switching as required without pre-planning, realize the optimization of real-time capability, and improve the adaptability to the dynamic change of the station network resources and the satellite motion state. The technical scheme adopted by the invention is as follows: a distributed multi-curved-surface-array full airspace beam continuous control method comprises the following step