基于视场合成的成像光谱仪数据采集系统设计

Design of Data Acquisition System of Imaging Spectrometer Based on FOV Composition

推扫式遥感仪器可以采用多个镜头进行视场合成以提高仪器的总视场。视场合成技术涉及光学、机械、电子学系统技术。电子学系统需要完成多镜头数据的采集、融合及其他处理。在光谱仪地面测试数据采集系统中,每个镜头对应一个独立的数据采集与处理模块。控制模块同步各子模块的数据采集,并通过FIFO接口获取各子模块数据,然后通过PCI数据采集卡发送到PC机中。所有模块插在一个底板中,底板完成模块间的连接。介绍了多镜头下数据采集系统的设计与实现。

The push-broom remote sensing device could increase its total FOV （Field of View） by FOV composition using multiple cameras and sensors. The FOV composition technology relates to optics, mechanics and electronics. The electronics system is in charge of data acquisition and fusing processing. In the data acquisition system of ground imaging spectrometer, each camera corresponds to an independent sub-module, which is used to acquire and process its own data. The controller module synchronizes the data acquisition of all the sub-module, receives the data of all sub-modules via FIFO interface, and sends the data to PC host using a PCI data acquisition card. All the modules are linked to a bottom circuit board, which combines these modules. The design and realization of this data acquisition system under multiple cameras was introduced.