CN-122027764-A - Method for acquiring key event image in real time in satellite transmitting process

CN122027764ACN 122027764 ACN122027764 ACN 122027764ACN-122027764-A

Abstract

The invention relates to a real-time acquisition method of a key event image in a satellite launching process, which belongs to the technical field of satellite launching process monitoring, and comprises the steps of calculating a shooting time length a and a time starting point range of carrier fairing separation, a shooting time length B and a time starting point range of satellite rocket separation, a shooting time length C and a time starting point range of solar wing expansion, setting a command uploading time error as delta T, carrying out accurate processing on the ranges of the time length a and the time length B, determining a throwing cover shooting countdown time A, a satellite rocket separation shooting countdown time B and a solar wing expansion shooting countdown time C, and completing the real-time acquisition flow design of the whole satellite launching process image.

Inventors

MA LEI
CONG QIANG
YAO SHUN
HAN YANDONG
LIU FENG

Assignees

航天东方红卫星有限公司

Dates

Publication Date: 20260512
Application Date: 20231205

Claims (10)

1. A real-time acquisition method of a key event image in a satellite transmitting process is characterized by comprising the following steps: before launching, calculating shooting duration a and time starting point range of carrier fairing separation, shooting duration b and time starting point range of satellite rocket separation, and shooting duration c and time starting point range of solar wing expansion according to the determined carrier rocket flight program and satellite solar wing opening program; Setting the instruction uploading time error as delta T; according to DeltaT, carrying out accurate treatment on the range of the time length a and the time length b; determining a cover throwing shooting countdown time A and a satellite and arrow separation shooting countdown time B; Determining shooting countdown C of solar wing unfolding; The method comprises the steps of determining a starting point of a time length a according to a cover throwing shooting countdown time A, determining a starting point of a satellite and arrow separation shooting countdown time B according to an ending point of the time length a, determining a starting point of a time length B according to an ending point of the satellite and arrow separation shooting countdown time B, determining a starting point of a shooting time length C for unfolding a solar wing according to a shooting countdown time C for unfolding the solar wing, and completing the real-time acquisition flow design of images in the whole satellite launching process.
2. The method for acquiring the key event images in the satellite launching process according to claim 1 is characterized by acquiring the absolute moment of carrier rocket launching as T0 according to a carrier rocket flight program, setting the moment of loading a countdown instruction as T, setting the moment of loading a countdown instruction as a front relative time interval relative to T0, setting the moment of separating a carrier fairing as T1, setting the moment of separating a satellite as T1, setting the moment of separating the satellite as T2, setting the moment of separating the satellite as a rear relative time interval relative to T0, obtaining the absolute moment of solar wing deployment as T3 according to a satellite solar wing deployment program, and sequentially arranging the time sequences as T, T0, T1, T2 and T3.
3. The method for acquiring the key event image in real time during the satellite transmission process according to claim 2, wherein the time length a covers the time point T1, the time length b covers the time point T2, and the time length c covers the time point T3.
4. The method for acquiring the key event image in real time during the satellite transmission process according to claim 3, wherein the duration a is in the range of [ T1-5, T1+10], the duration b is in the range of [ T2-5, T2+10], and the duration c is in the range of [ T3-5, T3+10].
5. The method of claim 4, wherein the time duration a is in the range of [ T1-5-DeltaT, T1+10+ DeltaT ] and the time duration b is in the range of [ T2-5-DeltaT, T2+10+ DeltaT ] after the time duration a is accurate.
6. The method for acquiring the key event image in real time during the satellite transmitting process according to claim 5, wherein the cover throwing countdown time A is the time from the absolute time T of the upper pouring countdown instruction to the starting time of the range of the duration a, namely A=T+T1-5-DeltaT, and the satellite and arrow separation countdown time B is the starting time of the range of the duration B minus the ending time of the range of the duration a, namely B=T2-5-DeltaT- (T1+10+ DeltaT) =T2-T1-15-2 DeltaT.
7. The method for acquiring the key event image in real time during the satellite transmitting process according to claim 1, wherein the shooting countdown C of the solar wing unfolding is T3-5.
8. The method for acquiring the key event image in real time in the satellite transmitting process according to claim 2, wherein the whole time sequence flow of the image real-time acquisition is as follows: The method comprises the steps of injecting a shot-and-countdown time A, a satellite-and-arrow separation shooting countdown time B, a fairing shooting and satellite-and-arrow separation shooting instruction on a satellite at a moment T, automatically starting the shot-and-arrow separation shooting countdown time A after the injection instruction is fed, starting to execute shooting tasks for carrying fairing separation after the shot-and-arrow separation shooting countdown is completed, finishing the shooting tasks for carrying fairing separation after a time length a passes, starting to execute the satellite-and-arrow separation shooting tasks after the satellite-and-arrow separation shooting countdown is completed, finishing the satellite-and-arrow separation shooting tasks until a time length B passes, starting to execute shooting countdown C for solar wing unfolding at a moment T2 in the process of executing the satellite-and-arrow separation shooting tasks, starting to execute shooting tasks for solar wing unfolding after the shooting countdown for solar wing unfolding is completed, and finishing the shooting tasks for solar wing unfolding after a time length C.
9. The method for acquiring the key event image in real time during the satellite transmitting process according to claim 1, wherein when each shooting task is executed, the shooting interval satisfies the following conditions:
10. The method for acquiring the key event images in the satellite launching process according to claim 1, wherein the solar wing unfolding shooting task is independently executed by satellite program control instructions which are independently started by a satellite and an arrow, namely the program control instructions carrying shooting intervals and shooting numbers.

Description

Method for acquiring key event image in real time in satellite transmitting process Technical Field The invention belongs to the technical field of satellite transmission process monitoring, and relates to a method for acquiring a key event image in real time in a satellite transmission process. Background In the satellite launching and orbit entering process, carrying fairing separation, satellite rocket separation, solar wing deployment and the like are the most critical events and are also important criteria for the success or failure of launching. It is therefore important to grasp the execution of such critical actions in real time. At present, the separation of the carrier fairing and the separation of the satellites and the satellites are generally monitored by an image measurement system configured by the carrier rocket. The carried image measuring system consists of a camera, an image compression encoder, a transmitter, an antenna, a battery, a distributor and the like. The image compression encoder performs data acquisition compression, encoding and data comprehensive framing on image data sent by the camera to form a PCM code stream, and the PCM code stream is modulated by the transmitter and then transmitted and downloaded by the antenna. The satellite solar wing unfolding action is generally reflected by telemetry parameters such as voltage, current and the like of a satellite, namely, a switch designed in advance is triggered to generate voltage or current change, and the voltage or current change is collected by a telemetry circuit to form binarized telemetry information. The carrier rocket image measuring system is a complete complex system, has a plurality of devices and occupies a plurality of resources, and special satellite-ground channels are required to be used for signal transmission, and special receiving and processing devices are also required on the ground. In addition, because of the distance and relative attitude change between the carrier and the satellite after the satellite and the rocket are separated, the carrier rocket image measurement system generally cannot acquire the solar span opening image of the satellite. Satellite and rocket separation and solar span opening judgment based on satellite telemetry parameters are not visual, only action results can be displayed, and action processes cannot be reflected. The invention discloses a method, a device, a system and a storage medium for acquiring a satellite and arrow separation parameter based on images before and after the separation of the satellites acquired by a double-vision image acquisition unit, wherein the images after the separation of the satellites acquired by the invention are in response to the satellite and arrow separation state, namely, the power-on and shooting of satellites after the separation of the satellites, and the image acquisition unit is powered on and shoots, so that time delay is caused, images in the initial period of the separation of the satellites cannot be shot, images in the whole process of the separation of the satellites cannot be acquired, and images carrying a parabolic fairing cannot be acquired. In addition, due to the regional distribution limitation of the ground measurement and control stations, satellite-rocket separation points of some satellites are not in the measurement and control arc segments, and the ground measurement and control system cannot timely send satellite instructions during and before satellite-rocket separation. Meanwhile, in the period from the ignition and take-off of the carrier rocket to the separation of the satellites, in order to ensure the electromagnetic compatibility safety of the satellites, a ground measurement and control system generally does not send a satellite use instruction. Disclosure of Invention The invention solves the technical problems of overcoming the defects of the prior art, and provides a real-time acquisition method for key event images in a satellite launching process, which realizes the real-time acquisition of the whole process images of key events including separation of a fairing of a carrier rocket, separation of a satellite rocket, deployment of a solar wing of a satellite and the like, and is particularly suitable for satellite launching process monitoring provided with a satellite-borne monitoring camera. The solution of the invention is as follows: A real-time acquisition method of key event images in a satellite transmitting process comprises the following steps: before launching, calculating shooting duration a and time starting point range of carrier fairing separation, shooting duration b and time starting point range of satellite rocket separation, and shooting duration c and time starting point range of solar wing expansion according to the determined carrier rocket flight program and satellite solar wing opening program; Setting the instruction uploading time error as delta T; according to DeltaT, carrying ou