模块化机载可见近红外焦平面系统

Modular airborne visible and near infrared focal plane system

以航空机载遥感仪器为应用背景,提出了一种模块化焦平面系统,实际完成了最高帧频可达300 fps的大面阵可见近红外焦平面系统的研制。通过机电热一体化设计,提高焦平面技术集成度,避免相互分离造成的信号衰减和易受干扰。同时将先进的高速光纤传输技术引入航空遥感领域,数据率达到1.6Gbps以上,保证高数据率的同时降低了系统互连的复杂程度,提高了数据传输的抗干扰能力。阐述了系统设计思想及可见近红外CCD探测器工作原理,并对其中的机电热集成设计、高速总线接口、高速光电接口等关键技术进行了详细分析。最终实现高帧频大面阵机载可见近红外焦平面系统的小型化、轻量化及模块化,最高数据率达2.5Gbps,系统信噪比达到400以上。

Modular focal plane system was proposed under the airborne remote sensing instruments application background. The research and developement were finished that large array visible and near infrared focal plane system with 300 fps maximum frame rates. By the integrated design of mechanical and electronic and heat, and improving the FPA technology integration, signal avoid to be weakened and disturbed. The advanced high-speed fiber-optic transmission technology was taken into the aviation field of remote sensing, data rate of 1.6 Gbps or more, which ensuring the high data rate and reducing the complexity of the system interconnect, improving anti-disturbing capability of data transmission. Based on expounding the thought of system design and the structure of VNIR CCD detector, the key technologies among the system were analyzed such as mechanical and electronic and heat integrated design, high- speed data interface and high-speed serial photoelectric interface in detail. Finally the miniaturization, lightweight and modular are the features of developed large array airborne visible and near infrared focal plane system, its maximum data rate is up to 2.5 Gbps, SNR is up to 400 or more.