摘要
全谱段光谱成像仪集成可见多光谱、短波/中波红外以及长波红外三种探测器,覆盖十多个谱段,具有目前国内同类遥感仪器最宽光谱信息,同时系统复杂且技术难度较大。为解决全谱段光谱成像仪多探测器同步控制、海量数据存储与集成处理以及探测器在轨增益、级数、积分时间等其他参数调整问题,设计了一种多探测器数据控制与处理系统。该系统硬件以现场可编程门阵列(FPGA)为核心控制处理单元,采用光耦合差分器件与其它设备进行连接和传输;FPGA软件采用模块化设计思想,自顶向下用硬件描述语言(VHDL)进行设计;利用仿真工具、硬件模拟器进行验证,结果证明了该设计的正确性和有效性。在实际工程应用中,该系统功能全面、接口灵活、可靠性高且易扩展。
A broad-spectral imager integrates three detectors which include a visible multi-spectral detector, a short-wave/middle-wave infrared detector and a long-wave infrared detector, and it can provide coverage over the broadest spectral range of more than 10 spectrums in the same type of domestic remote sensors so far, which involves more complex systems and more difficult design challenges. In this paper, a design of data control and processing system of multi-detector was given to solve these challenging problems of the broad-spectral imager such as synchronization control of multi- detector, mass data storage and integrated processing, imaging parameters adjustment of detectors which include gain, stage, integral time and others on orbit, etc. Field programmable gate array （FPGA） was used as a key cell of control and processing in the system hardware; and optocoupler and low-voltage differential signal（LVDS） devices were used to transmit signals to other systems; By means of modularized conceptual design, the software was designed from top to bottom with very-high-speed integrated circuit hardware description language（VHDL）; Finally, verification of the design were performed with simulation tools and hardware simulator, and the results show its correctness and effectiveness. In practical engineering application, the system has comprehensive functions, flexible interface, high reliability and expansibility.
出处
《红外与激光工程》
EI
CSCD
北大核心
2016年第4期206-211,共6页
Infrared and Laser Engineering
基金
国家预研项目基金
