高速TDICCD遥感相机成像采集与判读系统

High-speed imaging collection and judge system of TDICCD remote-sensing camera

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 the situation that TDICCD aerospace remote-sensing camera＇s huge amount of data and increasing the pixel clock because of it toward resolution,wide-field direction,a high-speed TDICCD aerospace remotesensing camera imaging acquisition and judge system that reduce the frequency and use double-channel Cameralink card was designed.Firstly,image output timing of TDICCD camera was given.And then,the original two channels image was reduce the frequency,the Cameralink image acquisition card that support for dual BASE mode collected image.Finally,one TDICCD camera testing was done.This system can realize the dual channels pixel frequency 140 MHz,line frequency 14 kHz,12bit image acquisition,display and storage.It can automatically judge image and calculate various images indicators,judge and calculation are accurate and fast,it greatly improves the efficiency and avoids wrong justice.The developed highvspeed imaging acquisition and judge system is stable,portable and energy saving,that is suitable for field experiments.