System Integration Of Validation And Calibration Platform For Ocean Remote Sensing

With the development of quantitative remote sensing, validation and calibration emerge. Ocean remote sensing as an important part of quantitative remote sensing technology also faces this problem. It is of great significance to the development of quantitative ocean remote sensing that we can provide adequate on-site marine data to apply to ocean satellite remote sensor. In this regard, the paper designs a marine data acquisition system. The key technologies of design and implementation are described and system application software is developed.Taking into account the reliability of the platform and the development cycle, combined with sophisticated computer technology and communication technology, system integration approach is used here. Using modular design not only improves the clarity of the development process and enhances system versatility and portability. The system is divided into site acquisition, site control, remote monitoring and power management. To ensure the authenticity of field data, site acquisition and site control are based on offshore oil platform. The part of site acquisition composed by the number of observation instruments, completes access to a variety of marine elements; using multi-serial port expansion card, on-site computer and observation instruments are connected and instructions sending and observation data reception, storage are completed; remote monitoring in the shore-based, through the Inmarsat maritime satellite, connects on-site part to transmit data; electricity-based and UPS power supply supplemented ensure the security of electricity supply.In the windows environment, the system software is developed using VC++6.0. Based on single document view architecture, the main process of software framework development and the specific implementation methods are discussed, such as the main class function of software, window segmentation and different views switching,The three main functions of the application software are programmed by MFC: MSComm control programming serial communication, with communication protocol, is used to achieve control of the observation instruments; combined use of file and database storage, preservation of observation data and system log is completed; the windows socket programming completes the on-site data transmission to shore. The application of timer allows the system to complete the automatic acquisition; real-time data display facilitates to user to grasp the system state; through software query capability, the user can always check historical data and work log, to facilitate further data processing and system maintenance.Laboratory simulation debugging result shows that the system is stable to get data and can provide accurate and diverse scientific datas for calibration and validation of ocean remote sensing.