V-FIN1074拖曳体系统软件分析及数据后处理

SOFTWARE ANALYSIS AND DATA PROCESSING OF TYPE 1074 VARIABLE DEPTH V-FIN SYSTEM

本文以V-FIN 1074拖曳体原系统程序为中心,以实测数据流为线索并结合硬设备特性,较详细地分析了程序各模块的功能、特点及相互关系。进而把原来数据处理较粗糙的“封闭式”系统扩充为可提供实测数据文件较适合研究需要的“开放式”数据处理系统。 分析表明,该系统的使用与维护方法对实测数据精度有很大影响。如实时设定的实际采样率和压力传感器零点、对传感器校准与标定的正确性等诸因素均可影响实测数据的精度。本文对该系统的开发、使用与维护均有积极作用。

Type 1074 Variable Depth V-FIN system (batfish series 8800), imported from the U.S. by our institute, is an advanced equipment for marine investigations. It has functions of non-stop, continuous measurement of hydrographic parameters, recording of spatial and temperal coordinates of stations, and printing and plotting output, etc.Concentrating on system programs, by following the flow of data acquisition, and taking into acount of hardware properties, this paper discusses in detail the function feature and relationship of program modules. The original 'closed' system, which output crude data has been upgraded to an 'open' data processing system, which provides data products in the format suitable for research purposes.It is found that the precision of measured data is significantly affected by the way of operation and maintenance. Important factors include the sampling rate, the zero point of pressure sensor, and the correct calibration of sensor, The revised program and algorism may improve the precision of measurement.This paper provides useful information on the design, development, rational utilization and maintenance of this system.