一种轻小型遥感相机多通道高速图像传输方案

A Multi-Channel High-Speed Image Transmission Scheme for Lightweight and Small Sized Remote Sensing Cameras

遥感相机图像传输接口性能是影响相机整体性能的重要指标,为解决多通道相机图像数据传输速率高且同时满足轻小型化需求的问题,文章提出一种高吞吐率、低误码率的轻小型相机多通道高速图像数据传输方案,该方案基于CoaXPress接口采用Aurora 8B/10B通信协议,通过FPGA吉比特发送器(Gigabit Transceiver,GTX)实现4套焦面组件下行的高速图像传输,测试数据率达到13 Gbit/s,同时实现上行21 Mbit/s的相机控制数据率。仿真及测试结果表明:该方案极大地提高了相机的图像数据传输速率,接口电缆数量较传统减少近50%,可满足轻小型遥感相机多通道高速图像传输需求,为各类遥感相机高速小型化提供新的解决方案。

Remote sensing camera image transmission interface performance is an important indicator that affects the overall performance of the camera.In order to improve the circle image data transmission rate and at the same time to meet the needs of lightweight and miniaturization for multi-channel cameras,this article proposes a multi-channel high-speed image data transmission scheme with high throughput and low bit error rate for small and medium-sized cameras.The scheme is based on CoaXPress interface using the Aurora 8B/10B communication protocol,and downstream high-speed image transmission is achieved through the FPGA highspeed serial transceiver GTX for four sets of focal plane components,with the test data rate up to 13 Gbps and the upstream camera control data rate of 21 Mbps.Simulation and test results show that the scheme greatly improves the camera’s image data transmission rate and has a nearly 50%reduction in the interface cable number compared with the traditional methods,which can meet the demand for multi-channel high-speed image transmission of light and small remote sensing cameras,and provide a new solution for the high-speed miniaturization of various types of remote sensing cameras.