论文部分内容阅读
为了适应TDICCD航天遥感相机向着高分辨率、宽视场方向发展,所带来的数据量巨大、像元时钟越来越高,设计了一套先通过降频方式、再选用双通道Cameralink图像采集卡来实现的高速TDICCD航天遥感相机成像采集与判读系统。针对TDICCD遥感相机输出图像的时序,采用先对两路图像数据分别进行降频,接着采用支持双BASE模式的Cameralink图像采集卡采集图像。最后在某遥感相机平台上进行了验证。本系统可实现对双路像元时钟140 MHz,行频14kHz,位宽12bit的图像进行连续、无丢失的采集、显示、存储,以及对图像进行全自动判读和计算多种指标。本系统工作稳定,准确高效,便携节能,适合外场实验。
In order to adapt to TDICCD spaceflight remote sensing camera towards high-resolution, wide field of view direction, the enormous amount of data brought by, as the clock higher and higher, designed a set of first by way of frequency down, and then use the two-channel Cameralink image acquisition Card to achieve high-speed TDICCD space remote sensing camera imaging acquisition and interpretation system. According to the timing of the output image of TDICCD remote sensing camera, the two image data are down-sampled first, then the Cameralink image capture card with dual BASE mode is used to acquire the image. Finally, a remote sensing camera platform was verified. The system can achieve continuous, lossless acquisition, display, storage, and automatic interpretation and calculation of a variety of indicators on a dual-pixel clock of 140 MHz, line frequency 14 kHz and bit width 12 bit. The system is stable, accurate and efficient, portable energy saving, suitable for field experiments.