FPGA、ARM DSP嵌入式技术的在线航空摄影测量方法*

为满足空间数据实时处理的需求,提高航空摄影测量系统在线处理能力,本文研究一种在线摄影测量的理论与方法,基于嵌入式架构设计一种在线摄影测量系统,使用FPGA、ARM DSP等嵌入式计算技术建立专门的硬件运行环境,移植并优化现有算法到嵌入式系统中,实现摄影测量数据的在线处理。机载航摄实验结果表明,本文方法能够实现对摄影测量数据进行快速稳定的在线处理,验证了基于嵌入式架构的在线摄影测量的可行性,把摄影测量的处理效率提高到了一个更高的水平,同时也进一步拓宽了摄影测量技术的应用领域。

On-line aerial photogrammetry method using embedded technology of FPGA, ARM DSP

In order to meet the demand of real-time spatial data processing and improve the on-line processing capability of photogrammetric system, a kind of on-line photogrammetry method is proposed in this paper. According to the proposed method, system based on embedded architecture is then designed: using FPGA, ARM DSP and other embedded computing technology to build specialized hardware operating environment, transplanting and optimizing the existing photogrammetric algorithm to the embedded system, and finally on-line photogrammetric data processing is realized. At last, aerial photogrammetric experiment shows that the method can achieve high-speed and stable on-line processing of photogrammetric data. And the experiment also verifies the feasibility of the proposed on-line photogrammetric system based on embedded architecture, which can improve the processing efficiency of photogrammetry to a higher level and broaden the application field of photogrammetry.