ISO 21077:2021 空间数据和信息传输系统 数字运动图像

标准编号：ISO 21077:2021

中文名称：空间数据和信息传输系统 数字运动图像

英文名称：Space data and information transfer systems — Digital motion imagery

发布日期：2021-06

标准范围

本文件的目的是提供数字运动视频和图像标准的通用参考和框架，并为在航天器元件和地面系统之间共享或分发运动视频和图像的国际标准的使用提供建议。本文件的范围包括传统的实时流媒体视频和电视，包括人类和机器人航天器到航天器和航天器到地面系统，以及以后以实时流或文件传输的形式录制和分发的视频在这种情况下，实时流包括所有模式，其中视频以连续流的形式从航天器发送，并在接收时立即使用，而不管传输路径的延迟。？其他专业运动图像应用，如高速科学运动图像和多光谱运动图像，不在本文件中讨论然而，如果一个专门的图像摄像机系统需要以视频模式与航天器系统接口，则需要匹配这些接口。地面系统到地面系统的视频分发显然是整个视频系统的关键组成部分然而，这并不是本文件的主要重点目前，地面各航天机构之间交换任务视频产品的方式存在显著差异这是空间机构之间网络拓扑结构的差异以及视频共享协议的结果这些差异排除了在机构之间提供视频图像的标准方法。？在航天机构之间开始视频传输之前，应在使用的地面系统之间进行系统设计审查和性能测试，以确保视频图像来自航天器时的可操作性。

The purpose of this document is to provide a common reference and framework of standards for digital motion video and imagery, and to provide recommendations for utilization of international standards for sharing or distributing motion video and imagery between spacecraft elements and ground systems.The scope of this document includes traditional real-time streaming video and television, including human and robotic spacecraft-to-spacecraft and spacecraft-to-ground systems, as well as video recorded and distributed later, either as a real-time stream or as a file transfer.  In this context, real-time streaming includes all modes where video is sent from a spacecraft in a continuous stream and is intended for immediate use when received, regardless of the latency of the transmission path.  Other specialized motion imagery applications, such as high-speed scientific motion imagery and multi-spectral motion imagery, are not addressed in this document.  However, if a specialized imagery camera system has a requirement to interface to spacecraft systems in a video mode, it would be required to match these interfaces.Ground-systems-to-ground-systems video distribution is obviously a key component of the entire video system.  However, this is not the primary focus of this document.  Currently, there are significant differences in the ways mission video products are exchanged between the various space agencies on the ground.  This is the result of differences in network topologies between space agencies, and agreements for video sharing.  Those differences preclude there being a standard methodology for delivering video imagery between agencies.  Prior to the commencement of video transmission between space agencies, system design reviews and performance testing should be done between the ground systems in use to assure operability when video imagery comes from spacecraft.

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