WO2024001114A1 - 一种卫星健康状况监测图像多路径传输方法及装置 - Google Patents
一种卫星健康状况监测图像多路径传输方法及装置 Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 44
- 238000012544 monitoring process Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000036541 health Effects 0.000 title claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 230000004044 response Effects 0.000 claims abstract description 21
- 230000003862 health status Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 20
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- 238000005516 engineering process Methods 0.000 description 2
- 238000009432 framing Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- the invention relates to the technical field of satellite image processing, in particular to a multi-path transmission method and device for satellite health status monitoring images.
- large satellite systems usually consist of energy systems, communication systems, payload systems, attitude and orbit control systems, etc.
- the normal operation of all single-machine equipment ensures the realization of the functions of each system.
- the status of satellite equipment is monitored using telemetry values that are downloaded and decoded by the ground receiving station.
- Real-time monitoring of satellite equipment is realized by interpreting various relevant data values of all satellite equipment at the current moment, such as current values, voltage values, temperature values, etc. , and judge whether the satellite equipment is operating normally by judging whether these telemetry data values are within the normal range.
- analyzing telemetry data to determine the health status of the satellite is not only inefficient, but also cannot provide the most intuitive qualitative conclusion when the satellite fails.
- some domestic satellites are equipped with cameras with surveillance functions.
- the image data of most visual telemetry equipment are downloaded through digital transmission channels, making it impossible to quickly obtain key equipment on the satellite before the digital transmission antenna is deployed. status.
- the technical problem solved by the present invention is to overcome the shortcomings of the existing technology and provide a multi-path transmission method and device for satellite health status monitoring images.
- embodiments of the present invention provide a multi-path transmission method for satellite health status monitoring images, including:
- images corresponding to the critical satellite components of the target satellite are obtained based on the on-board camera;
- the original image data of the satellite's key components is downloaded to the ground terminal through the digital transmission channel.
- downloading the compressed satellite image to a ground terminal through a measurement and control channel includes:
- the compressed satellite images are formatted according to the first set data format and sent to the satellite service center computer frame by frame for use by the satellite service center computer.
- the received data is transmitted from the measurement and control channel to the ground terminal.
- the original image data of the satellite's key components is downloaded to the ground terminal through a digital transmission channel, including:
- the satellite images are formatted according to the second set data format and sent to the satellite service center computer frame by frame for storage by the satellite service center computer. into the storage module, and after the target satellite transits, the original image data of the satellite's key components is downloaded to the ground terminal through the digital transmission channel.
- performing compression processing on the satellite image to obtain a compressed satellite image includes:
- the satellite image is compressed with the JPEG standard algorithm according to the set compression ratio to obtain the compressed satellite image.
- the image corresponding to the key parts of the target satellite is captured based on the on-board camera, including:
- images of key components on the target satellite are photographed according to the set photographing parameters, photographing intervals and photographing quantities.
- embodiments of the present invention provide a multi-path transmission device for satellite health status monitoring images, including:
- a satellite image shooting module configured to respond to a shooting instruction for the on-board health monitoring camera and obtain images corresponding to key parts of the target satellite based on the on-board camera shooting;
- the compressed image download module is used to compress the images of the satellite's key components to obtain compressed satellite images, and download the compressed satellite images to the ground terminal through the measurement and control channel;
- the satellite image download module is used to download the original image data of key components of the satellite to the ground terminal through the digital transmission channel after the target satellite transits.
- the compressed image downloading module includes:
- the compressed image downloading unit is configured to format the compressed satellite image according to the first set data format in response to the data polling instructions received at a first preset time interval, and send the compressed satellite image to the satellite service center computer frame by frame,
- the satellite service center computer downloads the received data from the measurement and control channel to the ground terminal.
- the satellite image downloading module includes:
- the satellite image downloading unit is configured to format the satellite image according to the second set data format in response to the data polling command received at a second preset time interval, and send the satellite image to the satellite service center computer frame by frame, so as to
- the computer of the satellite service center stores the image data into the storage module, and after the target satellite transits, the original image data of the satellite's key components is downloaded to the ground terminal through the digital transmission channel.
- the compressed image downloading module includes:
- a satellite image compression unit is used to perform JPEG standard algorithm compression on the satellite image based on the ADV212 chip according to a set compression ratio to obtain the compressed satellite image.
- the satellite image capturing module includes:
- a satellite image capturing unit is configured to respond to the photography instruction and capture images of key components on the target satellite according to the set photography parameters, photography intervals and photography quantities.
- the multi-path transmission scheme for satellite health status monitoring images responds to the shooting instructions for the on-board health status monitoring camera and obtains images corresponding to the satellite-critical parts of the target satellite based on the on-board camera shooting, so as to monitor the satellite health status monitoring images.
- the images of heavy objects are compressed to obtain compressed satellite images, and the compressed satellite images are transmitted to the ground terminal through the measurement and control channel. After the target satellite transits, the original image data of the satellite's critical and heavy objects is transmitted to the ground through the digital transmission channel. terminal.
- the embodiment of the present invention can not only obtain the health status of critical satellite components in real time, but also obtain clear images of critical satellite components afterwards.
- Figure 1 is a step flow chart of a multi-path transmission method for satellite health status monitoring images provided by an embodiment of the present invention
- Figure 2 is a schematic diagram of a satellite image transmission process provided by an embodiment of the present invention.
- Figure 3 is a schematic structural diagram of a multi-path transmission device for satellite health status monitoring images provided by an embodiment of the present invention.
- the embodiment of the present invention multiplexes the two transmission channels of measurement and control and data transmission to both The health status of critical satellite components can be obtained in real time, and clear images of critical satellite components can be obtained afterwards.
- FIG. 1 a step flow chart of a multi-path transmission method for satellite health status monitoring images provided by an embodiment of the present invention is shown. As shown in Figure 1, the method may include the following steps:
- Step 101 In response to the shooting instruction of the on-board health monitoring camera, obtain an image corresponding to the satellite critical parts of the target satellite based on the on-board camera.
- the shooting instruction refers to an instruction for instructing to perform image shooting of key components of the target satellite.
- Satellite images refer to captured images of target satellites.
- the satellite health status monitoring system may include: a satellite monitoring status monitoring camera and a control unit.
- the satellite service center computer controls the satellite health status monitoring control unit to power on and perform monitoring tasks through remote control instructions. .
- the star service center computer first sends an OC command to power on the control unit. After powering on, the control unit completes self-test and waits for shooting instructions. Specifically, the satellite service center computer can send OC instructions, the relay in the satellite monitoring status monitoring control unit is activated, and the entire system is powered on and can start working.
- the satellite service center computer sends a shooting command (command code 0D03AAAA) to the control unit.
- a shooting command command code 0D03AAAA
- the control unit receives the shooting command, it sends it to the back of the camera.
- the back of the camera automatically sets the exposure time through the internal algorithm, performs the shooting task, and obtains the satellite of the target satellite. image.
- the control unit uses data instructions to control the health status monitoring camera to shoot and obtain images. This means that the star service center computer sends a start shooting instruction. After receiving the instruction, the control unit controls the camera to shoot the corresponding image according to the shooting parameters, shooting interval and shooting quantity in the instruction. image.
- steps 102 and 103 are executed.
- Step 102 Compress the image of the satellite's critical parts to obtain a compressed satellite image, and transmit the compressed satellite image to the ground terminal through the measurement and control channel.
- Step 103 After the target satellite transits, the original image data of the satellite's key components is downloaded to the ground terminal through the digital transmission channel.
- the image shooting After the image shooting is completed, it can be downloaded through two paths: measurement and control and data transmission.
- the first path is the real-time fast broadcast path.
- the image is compressed and then transmitted through the measurement and control channel to realize real-time monitoring of the status of the equipment on the satellite; the second path It is a delayed download path.
- the original image is stored in the fixed memory and will be subsequently downloaded through the digital transmission channel to achieve high-definition monitoring of the status of the on-board equipment.
- the image data captured by the camera is output in two channels, one channel is transmitted to the ADV212 chip through LVDS (CameraLink cable is used in this example) for data compression, and the compressed data is transmitted down through the multiplexed measurement and control channel.
- the other channel is output directly to the camera controller without compression, and the original image data is downloaded through the multiplexed digital transmission channel.
- the resolution of the original image captured by the camera is 340*256
- the size of the original image output directly without compression is 87K bytes
- the compressed data size is 1K.
- the first real-time fast broadcast path in step 102 refers to: after the satellite image of the target satellite is captured, the compressed code stream of the image is obtained through the compression chip of the control unit, and the satellite service center computer starts the polling compressed data mode. time (1 second or less) to send a data polling instruction to the control unit. After receiving the data polling instruction, the control unit formats the compressed data according to the preset data format and sends it to the satellite in frames. service center computer. After receiving the data, the satellite service center computer transmits it down from the measurement and control channel to the ground terminal. The ground terminal performs framing, analysis and decompression to restore the image of the health status monitoring on the satellite.
- the measurement and control channel refers to using the S-band (2 to 4 GHz) to transmit on-board telemetry data to the ground within the reception range of the measurement and control station.
- the code rate is generally 16384 bps.
- Obtaining the compressed code stream of the image through the compression chip of the control unit refers to using the ADV212 chip in the control unit to perform JPEG standard algorithm compression.
- the compression ratio can be set to achieve the purpose of reducing the amount of data.
- the above process may be: in response to the data polling instructions received at intervals of a first preset time period, format the compressed satellite images according to the first set data format, and send them to the satellite service center computer frame by frame, so as to The satellite service center computer transmits the received data from the measurement and control channel to the ground terminal.
- the satellite service center computer starts the polling image data mode, and sends polling data instructions to the control unit at certain intervals (1 second or less).
- the control unit receives the data polling
- the compressed data will be formatted according to the preset data format and then sent to the star service center computer in frames.
- the star service center computer sends four polling instructions per second, and each poll obtains one frame (256 bytes) of data, ensuring that the star service center computer can receive a complete compressed image data in one second.
- control unit Before sending data, the control unit needs to arrange the compressed data according to the preset format.
- the data format designed in this example is shown in Table 1 below:
- W0, W1, W2, and W3 are the data headers of each frame of data.
- the information contained in the data header is shown in Table 2 below:
- W0 Can record the time of the shooting task, the camera number of the shooting and other information W1 Which image number is D7-D0? W2 D15-D0 which frame image number
- Each frame of data contains 256 bytes, and each compressed image can be sent by 4 frames of data.
- the satellite service center computer After the satellite service center computer receives the data frame, it is transmitted down to the ground measurement and control station through the multiplexed measurement and control channel. After the control unit completes sending the compressed image data, it will not respond to the next satellite service polling command received.
- the ground system analyzes and decompresses the images captured by surveillance cameras.
- the second delayed download path in step 103 above refers to: after capturing the satellite image of the target satellite, the satellite service center computer starts polling the original data mode and sends the data to the control unit at regular intervals (1 second or less). Send polling data instructions. After receiving the data polling instructions, the control unit formats the original image data according to the preset data format and sends it to the star service center computer frame by frame.
- the star service center computer receives and stores it in In the satellite storage module, after the satellite transits, it is transmitted from the data transmission channel to the ground terminal.
- the ground terminal performs framing and analysis to restore the original image captured by the health monitoring camera on the satellite.
- the data transmission channel refers to using the X-band (8 to 12 GHz) to transmit on-board payload data to the ground terminal within the reception range of the ground station.
- the code rate is generally 2*450Mbps.
- the satellite storage module refers to the storage module of the satellite center computer. This module also stores the CAN bus data on the satellite and regularly transmits the data to the ground.
- the above process may be: in response to a data polling instruction received at a second preset time interval, format the satellite image according to the second set data format, and send it to the satellite service center computer frame by frame, so that the satellite image can be processed by the satellite image.
- the satellite service center computer stores the data in the storage module, and after the target satellite transits, the original image data of the satellite's key components is downloaded to the ground terminal through the digital transmission channel.
- the star service center computer starts the polling image data mode, and sends polling data instructions to the control unit every certain time (1 second or less), and the control unit receives the data polling
- the original image data is formatted according to the preset data format and sent frame by frame to the fixed memory of the star service center computer.
- the data format in the fixed memory is shown in Table 3 below:
- Packet tags represent different types of data packets.
- the packet tag of the health monitoring camera’s original data packet is 87D6H;
- the packet sequence number is the total count of all data packets stored in the star service data storage module. Every time a valid data packet is received and stored, the packet sequence number is sequentially incremented by 1 starting from 00000000H until FFFFFFFFH, then cleared to zero and restarted counting;
- the effective data area is the serially stored original image data, with a total of 256 bytes.
- the detailed format is shown in Table 3.
- the check digit is the low byte of the cumulative sum calculated in bytes from the beginning of the data type indication to the last byte of the valid data area.
- the satellite After the satellite passes through, it is transmitted down from the digital transmission channel to the ground, where the ground frames, analyzes and decompresses it, and restores the original image captured by the camera.
- the present invention compresses and formats image data, and designs a satellite polling and response mechanism to transmit health status monitoring camera image data to the ground frame by frame through the measurement and control channel, thus solving the problem of image data and ground pass-through in satellite health status monitoring equipment.
- the method for measuring and controlling transmission problems is simple and effective.
- the satellite health status monitoring camera can wait for the star service shooting instruction. If the instruction is not received, it will continue to wait. If the shooting instruction is received, the shooting task is executed, the satellite image data is obtained, and downloaded in two ways: 1. Real-time fast broadcast path; 2. Delayed download path.
- Real-time fast broadcast path compress the satellite image data, wait for the satellite service polling command, and send the compressed image to the satellite service center computer by frame, and then the satellite service center computer transmits it to the ground measurement and control station through the measurement and control channel.
- FIG. 3 a schematic structural diagram of a multi-path transmission device for satellite health status monitoring images provided by an embodiment of the present invention is shown. As shown in Figure 3, the device may include the following modules:
- the satellite image capture module 310 is configured to respond to the capture instruction for the on-board health monitoring camera and obtain images corresponding to key components of the target satellite based on the on-board camera;
- the compressed image download module 320 is used to compress images of key satellite components to obtain compressed satellite images, and download the compressed satellite images to ground terminals through measurement and control channels;
- the satellite image download module 330 is used to download the original image data of key components of the satellite to the ground terminal through the digital transmission channel after the target satellite transits.
- the compressed image downloading module includes:
- the compressed image downloading unit is configured to format the compressed satellite image according to the first set data format in response to the data polling instructions received at a first preset time interval, and send the compressed satellite image to the satellite service center computer frame by frame,
- the satellite service center computer downloads the received data from the measurement and control channel to the ground terminal.
- the satellite image downloading module includes:
- the satellite image downloading unit is configured to format the satellite image according to the second set data format in response to the data polling command received at a second preset time interval, and send the satellite image to the satellite service center computer frame by frame, so as to
- the computer of the satellite service center stores the image data into the storage module, and after the target satellite transits, the original image data of the satellite's key components is downloaded to the ground terminal through the digital transmission channel.
- the compressed image downloading module includes:
- a satellite image compression unit is used to perform JPEG standard algorithm compression on the satellite image based on the ADV212 chip according to a set compression ratio to obtain the compressed satellite image.
- the satellite image capturing module includes:
- a satellite image capturing unit is configured to respond to the photography instruction and capture images of key components on the target satellite according to the set photography parameters, photography intervals and photography quantities.
Abstract
本发明公开了一种卫星健康状况监测图像多路径传输方法及装置。所述方法包括：响应于针对星上健康状况监测相机的拍摄指令，基于星上相机拍摄得到目标卫星的卫星关重件对应的图像；对所述卫星关重件的图像进行压缩处理，得到压缩卫星图像，并将所述压缩卫星图像通过测控通道下传至地面终端；在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。本发明既可以实时获得卫星关重件的健康状况，又可以在事后获得卫星关重件的清晰图像。
Description
本申请要求于2022年6月29日提交中国专利局、申请号为202210761778.9、发明名称为“一种卫星健康状况监测图像多路径传输方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本发明涉及卫星图像处理技术领域，特别是一种卫星健康状况监测图像多路径传输方法及装置。
目前卫星大系统通常由能源系统、通信系统、载荷系统、姿轨控系统等组成。在轨运行期间，所有单机设备正常工作运转保障了各系统功能实现。目前监测卫星设备状态均采用遥测数值量下传，地面接收站解码，通过判读当前时刻所有卫星设备的各项相关数据值，如电流值、电压值、温度值等，实现对卫星设备的实时监测，并且通过判断这些遥测数据值是否在正常范围内来判断卫星设备是否正常运行。
针对卫星系统中的关重部件(帆板、天线、光学摆镜等关键重要部件)，通过分析遥测数据来判断卫星的健康状态不仅效率低，而且在卫星故障时不能给出最直观的定性结论。目前，国内部分卫星上均搭载有监视功能的相机，但由于图像数据量大，大多数可视化遥测设备的图像数据都通过数传通道下传，无法在数传天线展开前迅速获得星上关键设备的状态。
发明内容
本发明解决的技术问题是：克服现有技术的不足，提供了一种卫星健康状况监测图像多路径传输方法及装置。
本发明的技术解决方案是：
第一方面，本发明实施例提供了一种卫星健康状况监测图像多路径传输方 法，包括：
响应于针对星上健康状况监测相机的拍摄指令，基于星上相机拍摄得到目标卫星的卫星关重件对应的图像；
对所述卫星关重件的图像进行压缩处理，得到压缩卫星图像，并将所述压缩卫星图像通过测控通道下传至地面终端；
在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
可选地，所述将所述压缩卫星图像通过测控通道下传至地面终端，包括：
响应于间隔第一预设时长接收的数据轮询指令，将所述压缩卫星图像按照第一设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机将接收到的数据从测控通道下传至地面终端。
可选地，所述在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端，包括：
响应于间隔第二预设时长接收的数据轮询指令，将所述卫星图像按照第二设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机存储至存储模块内，并在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
可选地，所述对所述卫星图像进行压缩处理，得到压缩卫星图像，包括：
基于ADV212芯片按照设定压缩比对所述卫星图像进行JPEG标准算法压缩，得到所述压缩卫星图像。
可选地，所述响应于针对目标卫星的拍摄指令，基于星上相机拍摄得到所述目标卫星的关重件对应的图像，包括：
响应于所述拍摄指令，按照设定拍摄参数、拍摄间隔和拍摄数量拍摄得到所述目标卫星的星上关重件的图像。
第二方面，本发明实施例提供了一种卫星健康状况监测图像多路径传输装置，包括：
卫星图像拍摄模块，用于响应于针对星上健康状况监测相机的拍摄指令，基于星上相机拍摄得到所述目标卫星的关重件对应的图像；
压缩图像下传模块，用于对所述卫星关重件的图像进行压缩处理，得到压缩卫星图像，并将所述压缩卫星图像通过测控通道下传至地面终端；
卫星图像下传模块，用于在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
可选地，所述压缩图像下传模块包括：
压缩图像下传单元，用于响应于间隔第一预设时长接收的数据轮询指令，将所述压缩卫星图像按照第一设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机将接收到的数据从测控通道下传至地面终端。
可选地，所述卫星图像下传模块包括：
卫星图像下传单元，用于响应于间隔第二预设时长接收的数据轮询指令，将所述卫星图像按照第二设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机存储至存储模块内，并在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
可选地，所述压缩图像下传模块包括：
卫星图像压缩单元，用于基于ADV212芯片按照设定压缩比对所述卫星图像进行JPEG标准算法压缩，得到所述压缩卫星图像。
可选地，所述卫星图像拍摄模块包括：
卫星图像拍摄单元，用于响应于所述拍摄指令，按照设定拍摄参数、拍摄间隔和拍摄数量拍摄得到所述标卫星的星上关重件的图像。
本发明与现有技术相比的优点在于：
本发明实施例提供的卫星健康状况监测图像多路径传输方案，通过响应于针对星上健康状况监测相机的拍摄指令，基于星上相机拍摄得到目标卫星的卫星关重件对应的图像，对卫星关重件的图像进行压缩处理，得到压缩卫星图像， 并将压缩卫星图像通过测控通道下传至地面终端，在目标卫星过境之后，将卫星关重件的原始图像数据通过数传通道下传至地面终端。本发明实施例既可以实时获得卫星关重件的健康状况，又可以在事后获得卫星关重件的清晰图像。
图1为本发明实施例提供的一种卫星健康状况监测图像多路径传输方法的步骤流程图；
图2为本发明实施例提供的一种卫星图像传输流程的示意图；
图3为本发明实施例提供的一种卫星健康状况监测图像多路径传输装置的结构示意图。
针对卫星上健康状况监测相机获取的图像数据如何快速下传获取实时图像，同时又能得到星上关键设备高清影像的问题，本发明实施例通过复用测控和数传两条传输信道，既能实时获得卫星关重件的健康状况，又能事后获得卫星关重件的清晰图像。
接下来，结合具体实施例对本发明实施例的技术方案进行如下详细描述。
实施例一
参照图1，示出了本发明实施例提供的一种卫星健康状况监测图像多路径传输方法的步骤流程图，如图1所示，该方法可以包括以下步骤：
步骤101：响应于针对星上健康状况监测相机的拍摄指令，基于星上相机拍摄得到目标卫星的卫星关重件对应的图像。
在本实施例中，拍摄指令是指用于指示对目标卫星的关重件进行图像拍摄指令。
卫星图像是指拍摄得到的目标卫星的图像。
本实施例提供了一种卫星健康状况监测系统，该卫星健康状况监测系统可以包括：卫星监控状况监测相机和控制单元，星务中心计算机通过遥控指令控制卫星健康状况监测控制单元上电执行监测任务。
星务中心计算机首先发送OC指令给控制单元上电，控制单元加电后完成自检，等待拍摄指令。具体地，星务中心计算机可以发送OC指令，卫星监控状况监测控制单元中的继电器吸合，整个系统接通供电可以开始工作。
星务中心计算机发送拍摄指令(指令代码0D03AAAA)给控制单元，当控制单元收到拍摄指令后，发送给相机机背，机背通过内部算法自动设置曝光时间，执行拍摄任务，获取目标卫星的卫星图像。具体地，控制单元通过数据指令控制健康状况监测相机拍摄获得图像是指星务中心计算机发送开始拍摄指令，控制单元收到指令后按照指令中的拍摄参数、拍摄间隔和拍摄数量控制相机拍摄相应的图像。
在基于目标卫星上的星上相机拍摄得到目标卫星的关重件对应的图像之后，执行步骤102和步骤103。
步骤102：对所述卫星关重件的图像进行压缩处理，得到压缩卫星图像，并将所述压缩卫星图像通过测控通道下传至地面终端。
步骤103：在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
在图像拍摄完成之后，可以通过测控和数传两条路径下传，第一条路径是实时快播路径，将图像压缩后通过测控信道下传，实现实时监视星上设备状态；第二条路径是延时下传路径，原始图像存入固存中，待后续通过数传通道下传，实现高清晰的监视星上设备状态。
具体地，相机拍摄的图像数据分两路输出，一路通过LVDS(本例采用CameraLink电缆)传输至ADV212芯片进行数据压缩，压缩后的数据通过复用测控信道下传。另一路不压缩直接输出至相机控制器，原始图像数据通过复用数传通道下传。本例中，相机拍摄的原始图像分辨率为340*256，不压缩直接输出的原始图像大小为87K字节，经过压缩后数据大小为1K。
步骤102的第一条实时快播路径是指：在拍摄得到目标卫星的卫星图像之后，通过控制单元的压缩芯片得到图像的压缩码流，星务中心计算机启动轮询 压缩数据模式，每隔一定时间(1秒或者更短)向控制单元发送轮询数据的指令，控制单元收到数据轮询指令后，将压缩后的数据按照预先设定好的数据格式进行格式编排之后按帧发送给星务中心计算机。星务中心计算机收到数据后从测控通道下传至地面终端，由地面终端进行组帧、解析和解压缩，还原得到星上健康状况监测的图像。
在本实施例中，测控信道是指用S波段(2～4GHz)实现星上遥测数据在测控站的接收范围内传输至地面，码速率一般为16384bps。
通过控制单元的压缩芯片得到图像的压缩码流是指利用控制单元中的ADV212芯片进行JPEG标准算法压缩，压缩比可设置，以达到减少数据量的目的。
对于上述过程具体可以为：响应于间隔第一预设时长接收的数据轮询指令，将所述压缩卫星图像按照第一设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机将接收到的数据从测控通道下传至地面终端。
在本实施例中，在图像拍摄完成后，星务中心计算机启动轮询图像数据模式，每隔一定时间(1秒或者更短)向控制单元发送轮询数据的指令，控制单元收到数据轮询指令后，将压缩后的数据按照预先设定好的数据格式进行格式编排之后按帧发送给星务中心计算机。本例中，星务中心计算机1秒发送4次轮询指令，每次轮询获得一帧(256字节)的数据，确保星务中心计算机1秒可以收到1幅完整的压缩图像数据。
控制单元在发送数据之前需要将压缩后的数据按照事先设定的格式进行编排，本例中设计的数据格式如下表1所示：
表1：帧数据格式
其中，W0、W1、W2、W3为每帧数据的数据头，数据头包含的信息如下表2所示：
表2：数据头格式
| W0 | 可以记录拍摄任务的时刻、拍摄的相机编号等信息 |
| W1 | D7-D0第几幅图像编号 |
| W2 | D15-D0第几帧图像编号 |
每帧数据包含256字节，每幅压缩后的图像由4帧数据即可发送完毕。
星务中心计算机收到数据帧后，通过复用测控通道下传至地面测控站，控制单元将压缩后的图像数据发送完成后，下次接收到星务轮询指令即不响应。地面系统进行解析和解压缩，还原得到监视相机拍摄的图像。
上述步骤103的第二条延时下传路径是指：在拍摄得到目标卫星的卫星图像之后，星务中心计算机启动轮询原始数据模式，每隔一定时间(1秒或者更短)向控制单元发送轮询数据的指令，控制单元收到数据轮询指令后，将原始图像数据按照预先设定好的数据格式进行格式编排之后按帧发送给星务中心计算机，星务中心计算机接收并存储在星务存储模块中，待卫星过境后从数传通道下传至地面终端，由地面终端进行组帧、解析，还原得到星上健康状况监测相机拍摄的原始图像。
在本实施例中，数传信道是指用X波段(8～12GHz)实现星上载荷数据在地面站的接收范围内传输至地面终端，码速率一般为2*450Mbps。
星务存储模块，是指星务中心计算机的存储模块，该模块还会存储星上的CAN总线数据，定期将数据下传至地面。
上述过程可以为：响应于间隔第二预设时长接收的数据轮询指令，将所述卫星图像按照第二设定数据格式进行格式编排，并按帧发送给星务中心计算机， 以由所述星务中心计算机存储至存储模块内，并在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
在具体实现中，在图像拍摄完成后，星务中心计算机启动轮询图像数据模式，每隔一定时间(1秒或者更短)向控制单元发送轮询数据的指令，控制单元收到数据轮询指令后，将原始图像数据按照预先设定好的数据格式进行格式编排之后按帧发送给星务中心计算机的固存，固存中的数据格式如下表3所示：
(1)数据类型标示，表示本数据包为星务数据存储数据，固定为146FH；
(2)包标示表示不同类型的数据包，健康状况监视相机原始数据包的包标示为87D6H；
(3)包序号为星务数据存储模块存储的所有数据包的总计数，每接收并存储一个有效数据数据包，包序号从00000000H开始顺序加1，直到FFFFFFFFH后，清零重新开始计数；
(4)有效数据区为串行存储的图像原始数据，共256字节，详细格式如 表3所示。
(5)校验位为从数据类型标示开始到有效数据区最后一个字节为止按字节计算的累加和的低字节。
待卫星过境后从数传通道下传至地面，由地面进行组帧、解析和解压缩，还原得到相机拍摄的原始图像。
本发明将图像数据进行压缩、格式编排，设计星务轮询与应答的机制按帧将健康状况监测相机图像数据通过测控通道下传至地面，解决了卫星健康状况监测设备中图像数据与地面通过测控通道进行传输的问题，方法简单有效。
对于上述过程可以结合图2进行如下详细描述。
如图2所示，卫星健康状态监测相机可以等待星务拍摄指令，若未接收到指令则继续等待。若接收到拍摄指令，则执行拍摄任务，得到卫星图像数据，并采用两种方式下传：1、实时快播路径；2、延时下传路径。
1、实时快播路径：是将卫星图像数据压缩，等待星务轮询指令，并按帧发送压缩图像给星务中心计算机，进而由星务中心计算机通过测控信道下传给地面测控站。
2、延时下传路径：是将卫星图像数据存储到固存中，等待固存回放指令，进而按帧发送压缩图像给星务中心计算机，进而由星务中心计算机将原始卫星图像数据通过数传通道下传给地面数传站。
实施例二
参照图3，示出了本发明实施例提供的一种卫星健康状况监测图像多路径传输装置的结构示意图，如图3所示，该装置可以包括以下模块：
卫星图像拍摄模块310，用于响应于针对星上健康状况监测相机的拍摄指令，基于星上相机拍摄得到所述目标卫星的关重件对应的图像；
压缩图像下传模块320，用于对所述卫星关重件的图像进行压缩处理，得到压缩卫星图像，并将所述压缩卫星图像通过测控通道下传至地面终端；
卫星图像下传模块330，用于在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
可选地，所述压缩图像下传模块包括：
压缩图像下传单元，用于响应于间隔第一预设时长接收的数据轮询指令，将所述压缩卫星图像按照第一设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机将接收到的数据从测控通道下传至地面终端。
可选地，所述卫星图像下传模块包括：
卫星图像下传单元，用于响应于间隔第二预设时长接收的数据轮询指令，将所述卫星图像按照第二设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机存储至存储模块内，并在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
可选地，所述压缩图像下传模块包括：
卫星图像压缩单元，用于基于ADV212芯片按照设定压缩比对所述卫星图像进行JPEG标准算法压缩，得到所述压缩卫星图像。
可选地，所述卫星图像拍摄模块包括：
卫星图像拍摄单元，用于响应于所述拍摄指令，按照设定拍摄参数、拍摄间隔和拍摄数量拍摄得到所述标卫星的星上关重件的图像。
本申请所述具体实施方式可以使本领域的技术人员更全面地理解本申请，但不以任何方式限制本申请。因此，本领域技术人员应当理解，仍然对本申请进行修改或者等同替换；而一切不脱离本申请的精神和技术实质的技术方案及其改进，均应涵盖在本申请专利的保护范围中。
本发明说明书中未作详细描述的内容属本领域技术人员的公知技术。
Claims (10)
- 一种卫星健康状况监测图像多路径传输方法，其特征在于，包括：响应于针对星上健康状况监测相机的拍摄指令，基于星上相机拍摄得到目标卫星的卫星关重件对应的图像；对所述卫星关重件的图像进行压缩处理，得到压缩卫星图像，并将所述压缩卫星图像通过测控通道下传至地面终端；在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
- 根据权利要求1所述的方法，其特征在于，所述将所述压缩卫星图像通过测控通道下传至地面终端，包括：响应于间隔第一预设时长接收的数据轮询指令，将所述压缩卫星图像按照第一设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机将接收到的数据从测控通道下传至地面终端。
- 根据权利要求1所述的方法，其特征在于，所述在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端，包括：响应于间隔第二预设时长接收的数据轮询指令，将所述卫星图像按照第二设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机存储至存储模块内，并在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
- 根据权利要求1所述的方法，其特征在于，所述对所述卫星图像进行压缩处理，得到压缩卫星图像，包括：基于ADV212芯片按照设定压缩比对所述卫星图像进行JPEG标准算法压缩，得到所述压缩卫星图像。
- 根据权利要求1所述的方法，其特征在于，所述响应于针对目标卫星的拍摄指令，基于星上相机拍摄得到所述目标卫星的关重件对应的图像，包括：响应于所述拍摄指令，按照设定拍摄参数、拍摄间隔和拍摄数量拍摄得到 所述目标卫星的星上关重件的图像。
- 一种卫星健康状况监测图像多路径传输装置，其特征在于，包括：卫星图像拍摄模块，用于响应于针对星上健康状况监测相机的拍摄指令，基于星上相机拍摄得到所述目标卫星的关重件对应的图像；压缩图像下传模块，用于对所述卫星关重件的图像进行压缩处理，得到压缩卫星图像，并将所述压缩卫星图像通过测控通道下传至地面终端；卫星图像下传模块，用于在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
- 根据权利要求6所述的装置，其特征在于，所述压缩图像下传模块包括：压缩图像下传单元，用于响应于间隔第一预设时长接收的数据轮询指令，将所述压缩卫星图像按照第一设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机将接收到的数据从测控通道下传至地面终端。
- 根据权利要求6所述的装置，其特征在于，所述卫星图像下传模块包括：卫星图像下传单元，用于响应于间隔第二预设时长接收的数据轮询指令，将所述卫星图像按照第二设定数据格式进行格式编排，并按帧发送给星务中心计算机，以由所述星务中心计算机存储至存储模块内，并在所述目标卫星过境之后，将所述卫星关重件的原始图像数据通过数传通道下传至地面终端。
- 根据权利要求6所述的装置，其特征在于，所述压缩图像下传模块包括：卫星图像压缩单元，用于基于ADV212芯片按照设定压缩比对所述卫星图像进行JPEG标准算法压缩，得到所述压缩卫星图像。
- 根据权利要求6所述的装置，其特征在于，所述卫星图像拍摄模块包括：卫星图像拍摄单元，用于响应于所述拍摄指令，按照设定拍摄参数、拍摄间隔和拍摄数量拍摄得到所述标卫星的星上关重件的图像。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117749253A (zh) * | 2024-02-06 | 2024-03-22 | 上海卫星互联网研究院有限公司 | 一种遥测数据压缩方法、卫星及地面设备 |
| CN117749253B (zh) * | 2024-02-06 | 2024-05-10 | 上海卫星互联网研究院有限公司 | 一种遥测数据压缩方法、卫星及地面设备 |
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| CN115297329A (zh) * | 2022-06-29 | 2022-11-04 | 航天东方红卫星有限公司 | 一种卫星健康状况监测图像多路径传输方法及装置 |
| CN116094579B (zh) * | 2023-04-07 | 2023-06-30 | 湖南鲸瓴智联信息技术有限公司 | 一种高低速协同的低轨卫星通信系统和方法 |
| CN116546172A (zh) * | 2023-07-05 | 2023-08-04 | 银河航天(北京)网络技术有限公司 | 图像生成方法、设备以及系统 |
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| CN108718209A (zh) * | 2018-06-15 | 2018-10-30 | 上海卫星工程研究所 | 卫星低速数传通道工程遥测和测控通道遥测实时呈现系统 |
| US20210036767A1 (en) * | 2019-08-01 | 2021-02-04 | Planet Labs, Inc. | Multi-Pathway Satellite Communication Systems and Methods |
| CN113242407A (zh) * | 2021-04-25 | 2021-08-10 | 西安微电子技术研究所 | 一种星载实时可视化遥测系统 |
| CN113252303A (zh) * | 2021-04-14 | 2021-08-13 | 中国人民解放军军事科学院国防科技创新研究院 | 天基复眼相机载荷在轨试验装置及方法 |
| CN115297329A (zh) * | 2022-06-29 | 2022-11-04 | 航天东方红卫星有限公司 | 一种卫星健康状况监测图像多路径传输方法及装置 |
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- 2022-06-29 CN CN202210761778.9A patent/CN115297329A/zh active Pending
- 2022-12-24 WO PCT/CN2022/141712 patent/WO2024001114A1/zh unknown
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| CN108718209A (zh) * | 2018-06-15 | 2018-10-30 | 上海卫星工程研究所 | 卫星低速数传通道工程遥测和测控通道遥测实时呈现系统 |
| US20210036767A1 (en) * | 2019-08-01 | 2021-02-04 | Planet Labs, Inc. | Multi-Pathway Satellite Communication Systems and Methods |
| CN113252303A (zh) * | 2021-04-14 | 2021-08-13 | 中国人民解放军军事科学院国防科技创新研究院 | 天基复眼相机载荷在轨试验装置及方法 |
| CN113242407A (zh) * | 2021-04-25 | 2021-08-10 | 西安微电子技术研究所 | 一种星载实时可视化遥测系统 |
| CN115297329A (zh) * | 2022-06-29 | 2022-11-04 | 航天东方红卫星有限公司 | 一种卫星健康状况监测图像多路径传输方法及装置 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117749253A (zh) * | 2024-02-06 | 2024-03-22 | 上海卫星互联网研究院有限公司 | 一种遥测数据压缩方法、卫星及地面设备 |
| CN117749253B (zh) * | 2024-02-06 | 2024-05-10 | 上海卫星互联网研究院有限公司 | 一种遥测数据压缩方法、卫星及地面设备 |
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