遥感卫星CCD相机模拟源的研制

针对遥感卫星上存在多种CCD相机组合，相机模拟源在地面电测系统及星上遥测数据链存在3种不同模拟任务的需求，利用大规模可编程器件、高速阵列存取技术、锁相环(PLL)频率调整技术和软硬件可编程图像处理技术，研制了一种适用于不同CCD相机模拟任务的模拟源系统。该系统支持多台设备级联，单台设备能够模拟输出4通道的并行16 bit LVDS信号、4路串行LVDS信号和4路串行NECL信号，其单通道并行LVDS数据像素频率为0.3~200 MHz，以0.1 MHz步进可调，且单次循环输出容量最大可达8 TB。通过简单配置，可产生符合CCSDS协议的遥感相机回放数据，并可对实时输出信号的行频和数据时钟相位进行调整。本系统已成功运用于多个型号空间相机的研制测试中，提高了空间相机的研制效率和设备利用率，改善了研制遥感卫星及CCD相机系统的测试验证手段。

Abstract

For a variety of simulation needs of the CCD camera combination in a remote sensing satellite and for three different simulation tasks in ground electronic measurement systems and telemetry data link on board, a type of camera simulation source for different types of CCD cameras is developed with programmable logic devices, high speed array storage technology, Phase Locked Loop(PLL) frequency adjustment technology and the software and hardware programmable image processing technology. The system supports cascading multiple devices, 4-channel parallel 16 bit LVDS, 4 serial LVDS and 4 serial NECL signals, in which the pixel frequency of parallel LVDS data in per channel can be ranged from 0.3 MHz to 200 MHz in a step of 0.1 MHz and the capacity of single cycle output is up to 8 TB. In addition, through a simple configuration, the system can produce the play back data of the remote sensing camera according to the CCSDS protocol and can adjust the output signal frequency and data clock phase in real time. The system has been successfully applied in many types of space camera development tests, and it enhances the efficiency of space CCD camera development, equipment utilization and testing certification means.

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遥感卫星CCD相机模拟源的研制

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