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全谱段多光谱星上信息处理系统应用于某型号多光谱遥感器,由可见光信息处理电路及红外信息处理电路构成。该系统基于推扫成像的遥感器设计方案,通过外同步控制方式,完成了可见光、短中波红外、长波红外探测器的时序控制与驱动、模拟信号采集与处理、数字信号整合与格式编排等功能,具有多焦面同步工作、采集模拟通道多、信噪比高的特点。最终系统共采集32路模拟图像信号,输出量化位数为14 bit,五路串行LVDS输出,单路数据率为30 Mbps。在给定的测试条件下,实验室环境实测可见光通道、短波红外通道信噪比分别达到307和422,中波红外通道、长波红外通道NETD分别达到0.14 K和0.16 K。并使用可见光通道进行了外景成像,得到了良好的图像数据。通过实验室测试及外景成像验证了本系统能够满足遥感器使用需求。
The multi-spectral multi-spectrum satellite information processing system is applied to a multi-spectrum remote sensor and comprises a visible light information processing circuit and an infrared information processing circuit. The system is based on pushbutton imaging remote sensor design, through the external synchronization control, completed the visible light, short wave infrared, long wave infrared detector timing control and driving, analog signal acquisition and processing, digital signal integration and formatting Function, with multi-focal synchronization, acquisition of analog channels, high signal-to-noise ratio. The final system collected a total of 32 analog video signals, the output quantization bits for the 14 bit, five serial LVDS output, single data rate of 30 Mbps. Under the given test conditions, the measured SNR of the visible light channel and the shortwave infrared channel of the laboratory environment were 307 and 422, respectively, and the NETD of the medium-wave infrared channel and the long-wave infrared channel reached 0.14 K and 0.16 K, respectively. And the use of visible light path for the location of the image, get a good image data. Through the laboratory test and the location of the imaging confirmed that the system can meet the needs of the use of remote sensors.