BS ISO 21851:2020 pdf free.Marine technology一Ocean observation systems一Design criteria of ocean hydro-meteorological observation systems reuse and interaction.
BS ISO 21851 This document specifies the overall framework of ocean hydro-meteorological observation systems,including the system function composition, the data structure type and data transmission format and protocol, as well as the input and output interface. These systems support automatic measurement of e.g. buoy, submersible and shore station instruments, with output interfaces, and provide observations on e.g. water temperature, salinity, depth, current, ocean wave, temperature, pressure, humidity, wind,visibility and precipitation. They have the ability to receive, store, display, process, and analyze data. This document is intended for both developers of ocean observation systems and ocean observers.The document combines the requirements of ocean hydro-meteorological observations, and adopts the ocean hydro-meteorological complex virtual instrument [OHM-CVI) as the system design reference model to standardize the overall structure. It specifies standardized data, input and output interfaces and a data exchange format. The input interface is responsible for receiving the collected data of the ocean observation instrument. The output interface provides MQ and REST data sharing modes for different data sharing scenarios to realize the interaction of ocean observation data. A function module is also specified, that includes data display, statistical analysis, and comprehensive query functions to meet the storage, display, processing and analysis requirements for ocean hydro-meteorological observation. The detailed description of the OHM-CVI components is given in 4.1.2 and 4.1.3.Figure 1 shows the system architecture model, with the standardized interfaces marked in blue.The function module is a module that analyses and displays the source data acquired by 0HM-CVI, and provides a standardized interface through MQ and REST. This document lists the data presentation forms commonly used by data display and calculation analysis modules based on observation parameters. Users can increase or decrease data presentation forms according to their requirements and observation parameters. This module shall have the following functions.BS ISO 21851 pdf download.