受地球曲率半径的限制，地面测控站在一定距离之外便无法接收到无人机光电吊舱获取的图像信息。为解决这一问题，设计了一种嵌入式大容量视频存储和回放系统。该系统采用DSP+FPGA的硬件架构，以NAND Flash大容量存储技术为基础，结合JPEG2000实时编解码芯片ADV202进行视频数据的压缩和解压。该系统录像时间可达30 min，存储可靠，回放图像清晰，满足了无人机对探测目标的影像存储和回放需求。

Due to the limitation of curvature radius of the earth, the ground control station can not receive the wireless video signal transferred from UAV. To solve this problem, an embedded large capacity video recording and replaying system is designed. DSP and FPGA are used as the hardware structure, based on the large capacity storing technique and combines with the JPEG2000 video to encode and decode the video stream. The system was used in an electro-optic pod with high quality of video replaying and reliable video recording. The recording time is up to 30 minutes and also can be extended by enlarging the memory spaces.