ZY-3 block adjustment and DSM elevation accuracy evaluation supported by ICESat/GLAS laser points

Dian Qv; Xinming Tang; Xiaoyong Zhu; Ao Li

doi:10.1117/12.2587148

12 March 2021 ZY-3 block adjustment and DSM elevation accuracy evaluation supported by ICESat/GLAS laser points

Dian Qv, Xinming Tang, Xiaoyong Zhu, Ao Li

Proceedings Volume 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications; 1176353 (2021) https://doi.org/10.1117/12.2587148
Event: Seventh Symposium on Novel Photoelectronic Detection Technology and Application 2020, 2020, Kunming, China

Abstract

In order to improve the situation that the ground control points cannot be obtained in overseas regions and difficult measurement areas, solve the problem of difficulty in obtaining the ground control points and meeting demand for accuracy of block adjustment without ground control points, in this paper, based on the block adjustment, ICESat/GLAS laser points are proposed as known elevation control points to participate in block adjustment, and the runway method is used to evaluate the vertical accuracy of ZY-3 DSM products produced after block adjustment of stereo images. Experimental results show that the vertical accuracy of flat terrain produced in ZY-3 DSM products after adjustment assisted by ICESat/GLAS laser points is significantly improved comparing with the DSM products produced without control condition, and the elevation accuracy was improved by 2.47m on average.

Citation Download Citation

Dian Qv, Xinming Tang, Xiaoyong Zhu, and Ao Li "ZY-3 block adjustment and DSM elevation accuracy evaluation supported by ICESat/GLAS laser points", Proc. SPIE 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications, 1176353 (12 March 2021); https://doi.org/10.1117/12.2587148

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