某静止卫星海洋辐射计指向镜的操控软件设计

Design of pointing mirror control software for the geostationary satellite ocean radiometer

摘要:

静止卫星海洋成像辐射计是测量海洋目标辐射特性的被动式遥感器。为了使静止卫星探测器达到对探测区域的全覆盖，需要系统计算机处理器驱动控制精密机械转台带动光学指向镜规律运转。文章利用Visual C++开发工具设计一款成像辐射计指向镜的操控软件，通过串口通讯驱动控制指向镜，使得海洋成像辐射计依靠二维指向镜做东西与南北方向的运动指向，实现覆盖区域的调整和观测。在设计中调用了PI公司六轴转台的库函数，运用多线程技术，控制基于PI转台的指向镜巡扫模式可调、运动速度可调。通过软件的增量化设计和测试，结合整机在海上塔台对水体光谱连续采集的外场试验，验证了该软件的设计实现达到海洋辐射计指向镜精密控制的目标，有效提高了地面光学测试和数据处理的工作效率。

Abstract:

Geostationary satellite ocean imaging radiometer is a passive remote sensor that measures the radiation characteristics of marine targets. In order to achieve full coverage of the detection area by the stationary satellite detector, the system computer processor needs to drive and control the precision mechanical turntable to drive the optical pointing mirror to operate regularly. This article uses Visual C ++ development tools to design an imaging radiometer pointing mirror control software, and drives the pointing mirror through serial port communication, so that the marine imaging radiometer relies on the two-dimensional pointing mirror to do east-west and north-south motion pointing to adjust the coverage area. In the design, the library function of PI company's six-axis turntable was called, and the multi-threading technology was used to control the directional scanning mode and motion speed of the PI-based turntable. Through the software's incremental design and testing, combined with the external field test of the machine's continuous acquisition of the water body spectrum at the offshore tower, it is verified that the software design achieves the goal of precise control of the ocean radiometer pointing mirror, which effectively improves the ground optical testing and data processing efficiency.