摘要
随着无人机的普及,其应用场合和领域愈加广泛。在不同的应用场合下,无人机需要搭载不同的载荷来完成相应的任务。目前,无人机遥测图像采集和传输无疑是需求最多的一种功能,在航拍、侦查、物探等领域都存在这方面的应用。传统的无人机与地面之间传输图像以模拟图像为主,但模拟图像往往传输距离有限而且极易受到干扰,画面质量不稳定。以数字信号为载体进行图像传输已发展成为无人机图像传输的主要方式。数字信号传输速率受制于带宽,在带宽一定的情况下将原始图像压缩为H.264格式的图像能够有效的提升图像传输的帧频。
With the popularity of UAVs,its applications and fields are becoming more extensive. In different applications, UAV need to carry different loads to complete the task. At present, UAV telemetry image acquisition and transmission is undoubtedly the most demand function, such as aerial photography, detection, geophysical and other areas. Traditionally, UAV and ground station mainly transmit analog images, but the transmission distance of analog images is very short and easily disturbed, so the picture quality is not stable. Image transmission with digital signals has evolved into the main mode of UAV image transmission. Digital signal transmission rate is subject to bandwidth,in the case of a certain bandwidth, the original image compression to H. 264 format images can effectively improve the image transmission frame rate.
出处
《自动化与仪器仪表》
2017年第6期130-132,共3页
Automation & Instrumentation
基金
国家级大学生创新创业训练计划项目(20161173601)
西安航空学院校级科研基金项目(2016KY1206)
关键词
无人机
图像编码
网络协议
地面站
UAV
image coding
network protocol
ground station
